Driving with a bad transfer case

Driving your car with a bad transfer case is a bad idea. If you continue to drive with a transfer case that has a serious mechanical problem, you could destroy it beyond the point of repair, and possibly damage your transmission, driveshafts and axles in the process. How do you fix a bad transfer case If the seals leak, fluid escapes and is no longer able to properly lubricate the interior components of the transfer case. Eventually the parts inside will wear out and overheat. If this happens, the transfer case will be rendered useless and the four-wheel drive operation will not work Escondido Transmission points out that some symptoms of a bad transfer case are easily remedied by properly shifting between drive modes, and only using four- and all-wheel drive modes under manufacturer specified conditions. Another remedy includes a fluid drain and refill to the proper levels

When you're driving a vehicle around with a bad transfer case, your engine computer will usually pick up on the high internal temperatures that the transfer case is producing. This will cause either your vehicle's check engine light or your vehicle's service 4WD light to pop on Transfer case failure is a potentially serious problem but it does have symptoms that you can notice early on. You might see hydraulic fluid leaking out from underneath your vehicle. You might notice problems shifting gears as you're driving One of the most common symptoms of transfer case problemsis leaking fluid. The parts are packed into it so tightly that they have been known to wear a hole right through it. Clearly, without any fluid in there, the problem will go from bad to worse. Without lubrication, the parts in the transfer case will quickly burn up Transfer Case Control Module Symptoms You Should Not Ignore. The Transfer Case Control Module (TCCM) is a specialty of the General Motor's 4WD operation. It controls the electronically-operated 4-wheel-drive system. All of its functions involve the shift - processing the shift request, executing it, and verifying the completion Without a transfer case, you will not be able to drive the vehicle since the power is split 50/50 to the front and rear drive shafts and in 4WD or 4H mode. Alternatively 100% of the vehicle power is transferred to the rear drive shaft and differential from the transfer case when 2H mode is selected

Signs of a Bad Transfer Case - RepairPal

This can be done with a set of gears, but the majority of transfer cases manufactured today are chain driven. If the transfer case isn't sending power to the drive shafts, you're parked. 21 people found this helpful 2000CAYukon. 07-11-2007, 07:11 PM. I replaced the chain and all the seals in the transfer case. The driveline vibration is still there so I doubt it has anything to do with the vibration. In my case, the vibration was there before I did the u-joints. I also replaced some parts on the tranny when I rebuilt the transfer case and I am having some. Transfer Case Noises. A transfer case is the mechanical component that connects the final drive output of the transmission to the front and rear wheels on a 4WD or AWD vehicle. These can range from simple mechanical devices to highly sophisticated components that dial in a prescribed amount of power to the front and rear wheels

Symptoms of a Bad or Failing Transfer Case Output Shaft

  1. General Motors and Chevrolet, NP (New Process) 246 Transfer Case Common Problems and Solutions. The rear case half of this unit is made out of magnesium and.
  2. If the seals leak, fluid escapes and is no longer able to properly lubricate the interior components of the transfer case. Eventually the parts inside will wear out and overheat. If this happens,..
  3. However, common problems such as transfer case failure can put a damper on the driving experience, even if it is something that many drivers encounter each year. In this article, we'll go over what the transfer case does for your BMW, in addition to what you can do to avoid transfer case failure and keep your car functioning optimally
  4. All transfer cases with 2 speeds have idling planets and will have some noise when unloaded. Do not assume the Transfer Case is bad because it sounds noisy on the lift. Test drive the vehicle. Some Transfer Cases may exhibit a high pitched whine when first installed. This may be related to a speed sensor not installed properly and hitting the.

The transfer case is a vital part of any four-wheel drive system. It is, for all intents and purposes, a second transmission that allows the vehicle to shift between rear-wheel drive and four-wheel drive, or high and low gearing. The driver then has the luxury of using rear-wheel drive on the road, and four-wheel drive off-road A vacuum line actuates the transfer case and changes the linkages from two- to four-wheel and back, depending on the driving conditions. If the vacuum line becomes worn and develops leaks, the transfer case will not get the full vacuum power needed to properly operate the mechanism. Check lines for leaks by simply listening with the engine. The most extreme cases resulting from a bad transfer case indicate a complete loss of four-wheel or all-wheel drive. Another exhibition of extensive damage to your drive train is the inability to switch back to regular, or two-wheel drive from four-wheel drive This is what happens when ur transfer case goes

What Are the Symptoms of a Bad Transfer Case

The VTG calculated transfer case and clutch wear based on amount of slip, torque, speed, mileage and can account for road conditions. Service intervals will vary based on individual vehicle use. Common Associated Fault Codes. BMW Fault Code 54c6 - Worn Transfer Case Oil (xDrive Transfer Case Fluid) This fault code is due to work transfer case. CVH is used on the newer model heavy trucks—F-250 and up. They lock in 4WD when vacuum is applied and unlock when vacuum is withheld. They use one solenoid that's controlled by the transfer case control module (TCCM). Easy-peasy. Besides an occasional bad vacuum solenoid, there are not really many issues with this system The Most Common Signs of Bad U-Joints. Although u-joints are sometimes found in other applications, they're mostly used in driveshafts (also known as propeller shafts). All vehicles—except those that are front-wheel drive—use one or more driveshafts to transfer rotational force from the transmission (or transfer case) to the differential (s) A leaking transfer case could mean that you've had a seal failure but it could also mean that there is an issue inside the transfer case itself. If a bearing goes bad inside a transfer case, it could cause it's output shaft to wobble and thus causing a leak at the oil seal Your car or truck's transfer case is what allows you to utilize the four-wheel drive or all-wheel drive function of your vehicle. This extremely intricate piece of equipment requires a special type of lubricant called gear oil or gear lube. This gear oil is much thicker than engine oil, allowing a type of lubrication known as bath oiling

Jeep Grand Cherokee AWD Transfer Case Problems. I was driving in forward then reverse to make a path in the snow when I heard a loud clunk. My tires spun after that. The Jeep drives fine except that it is all over the place with no traction. Obviously, my 4 wheel drive is out. My Jeep is AWD and you would never even notice anything was wrong. If the transfer case fails during operation, the vehicle may be left permanently in neutral or the transfer case may bind. If the transfer case is malfunctioning electronically it can cause erratic shifts from high to low gear and from two-wheel drive to four-wheel drive. Either situation can cause a dangerous situation while driving It is the job of the transfer case to bring that power to the axles. It is also the job of the transfer case to adjust the manner in which your tires are being turned while you are on the road. Your car won't drive nearly as well as it once did if your transfer case starts to fail Transfer Case problem of the 2016 Hyundai Santa Fe 1. Transfer case is failing at 61,000 mile, a lot of nose and vibration. Transfer case can come loose or cause failure to the drive shaft and maybe even possible components to come off while driving. See all problems of the 2016 Hyundai Santa Fe Discussion Starter · #1 · Aug 27, 2010. I have a 2000 jeep grand cherokee with 4.7L v8 and i think the transfer case is going bad. It used to just happen when it was cold but over last year it does it all the time now. When i go to turn left or right i hear a rubbing like sound and it almost feels like something is binding up

How to Tell If You Need a New Transfer Case SCS Gearbox In

Step 3 - Check for transfer case motor failure. A bad transfer case motor will often throw a code on your dash, but can also be diagnosed if you fail to hear the motor spinning once the 4WD gear is engaged. A new transfer case motor will cost you around $200. To replace a transfer case motor: You must drop the front drive shaft In many cars, a transfer case is located close to hot exhaust components; the heat also causes the fluid to deteriorate sooner. See this photo of the inside of a failed power transfer unit at 105,000 miles. In our opinion, even for normal driving conditions, the transfer case fluid should be changed at least every 60,000-70,000 miles or sooner if so recommended in the maintenance schedule I have a 2008 Silverado 1500 4X4. I have noticed the front driveshaft has a slip yoke where it meets up to the transfer case and I was wondering if it would be safe to drive without the front driveshaft, or would the fluid leak out of the transfer case? oh the truck is a wt with the manual 2 speed transfer case The Final Drive Control Module is the computer that talks to the transfer case and allows it to shift from 4WD to neutral, or 4WD LOW, etc. The module is located under the rear passenger bench seat (driver side) and it is very very easy to pull the old module and install the new one Transfer Case. Without a transfer case, your part-time 4WD vehicle would be a 2WD vehicle. The transfer case (also called the T-case) is what splits power from the engine 50/50 to both the rear and front axles by way of the front and rear drive shafts. The transfer usually sits right behind the transmission in your drivetrain

transfer case that was built by New Process Gear will be included in the New Venture transfer case line for pur-poses of this article. One of the greatest problems fac-ing the transmission rebuilder and parts suppliers in the last decade or so is the tremendous proliferation of new units. The transfer case is no different, with Road and transmission noise. The 4×4 Sprinter is louder on the road than its 2WD counterpart, whether you have the 4WD engaged or not. The transfer case and front differential seem to add noise. It's OK to drive at highway speeds with 4WD engaged. Fuel consumption doesn't vary much from 2WD mode, as far as we can tell The transfer case shift motor is a part of some vehicle's four-wheel drive (4WD) system and is responsible for switching between the vehicle's different two and four-wheel drive options. Four-wheel drive (also known as 4WD or 4-wheel drive) systems allow the engine to drive all four wheels of a vehicle simultaneously at the same speed Transfer Case Function, Fluid Level, & Condition. A transfer case is the center of the drivetrain of four-wheel drive and some all-wheel drive vehicles. Mounted to the back of the transmission, it splits engine power and sends it to the front and rear axles by means of front and rear drive shafts. It also synchronizes the difference in rotation. Also, keep driving with a bad transmission is not going to fix it. Rather, it will deteriorate the condition and your transmission can end up grinding itself to pieces. What Is the Solution? A transmission control module is an electronic device and a burnt circuit is the reason for its failure in most cases

Reasons Behind Transfer Case Failure in Car

Equipped with New Venture Gear Transfer Cases RPO NP1, NP2, NP3, NP4, NP8 The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition/Concern: Oil pump wear clip P/N 12470559 is broken or out of position. This may cause the pump to wear a pin hole in the transfer case rear half Bad Vibration while Driving. I have a 95 Limited 4X4 with about 150,000 miles. Over the holiday, we. took a long drive. From the onset, a distinct vibration began when the. vehicle approached 70 mph. Now it begins around 50 mph after the holiday. trip - about 900 miles. It is largely sporadic, sometimes worse than

Symptoms of Transfer Case Problems Drivetrain Resourc

  1. The Dana 18's offset design offers an advantage over all other center-drive transfer cases, in that the axle pumpkins and transfer case drop are all inline with each other and on one side of the Jeeps undercarriage - permitting the driver to pick a driving line to more easily clear boulders and other trail obstacles
  2. Step 2 - Check transfer case for whining noise. The transfer case could be low on fluid or have worn interior components. Shift through all the transmission gears while test driving the truck. If there is a noise while the truck is in neutral, or in some gears but not others, remove and repair the transmission. Check transfer case fluid level
  3. for the NVG246 transfer case control system. About the NVG246 Transfer Case The NVG246 transfer case is a 2-speed unit. It uses a planetary set for gear reduction in low range and is capable of adjusting the amount of torque being delivered to the front drive axle automatically (figure 1). The NVG246 transfer case is man
  4. If you usually drive off-road, then you should check and replace the transfer case fluid frequently. This is due to the placement of the transfer case. As it is beneath the vehicle without any case or covering, off-road driving exposes it to various impurities present on the surface of the road like mud and dust
  5. The full-time four-wheel-drive NP203 transfer case is one of the most standard items found in '70s fullsize 4x4s. Big, heavy, and relatively strong despite its chaindrive, this box can be converte
  6. Shuddering- Shuddering is typically a symptom of a bad torque converter. And, it'll usually happen at a particular engine speed or vehicle speed. So you'll be driving down the highway and suddenly the car will start to vibrate and if you keep driving faster that vibration will stop
  7. Check the vac lines under hood and then the one down to the transfer case (its 5/32 and is T off at the drivers side under hood and goes back behind the engine and down. 98 and earilier have a NP233 transfer case with a 3 port vac switch mounted on it that engages the front axle coupler and the front driveshaft

The reason this is a bad idea is the simple fact that pulling the handbrake causes the rear wheels to slow suddenly, putting a lot of stress on the transfer case, which is a drivetrain component. It is smartest and safest not to drive with a bad differential. What Happens If Rear Differential Goes Out While Driving? The severity of the complications if the rear differential goes out while driving with a bad pinion bearing will depend on the problem and the vehicle. In the case of chipped or broken gear teeth, there may a vibration or. In the case of a four wheel drive or all wheel drive vehicle, you may find that it actually has two separate drive shafts: one for transmitting power to the front and another to transmit power to the back. This will depend on the manufacturer's implementation of the four wheel drive or all wheel drive system. Common Bad Drive Shaft Symptom In 4WD with hubs disengaged front drive shaft, front diff and front axle, rear drive shaft, rear diff and rear axle are rotating. Front tires are rolling along (the transfer case makes the front drive line parts rotate, but since the wheels are disconnected the power flow does not reach the tires) - rear tires are pulling The transfer case will power the front and rear drive shafts with same rpm and is not able to satisfy the front axle's need for more rpm. Remember , the combined rpm of front wheels (A+B) is higher than the combined rpm of the rear wheels (C+D)

Step 4 - Check the transfer case shift motor. The transfer case shift motor, sometimes referred to as the shift actuator or shift encoder, is attached directly to the transfer case. It may be the culprit if you're not able to select a different drive mode with the transfer case selector switch My drive shaft from front transfer case is spinning in 2wd, I replaced a 4wheel drive actuator hub (was cracked) - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website U-joints are an integral part of the drive shaft power transmission system. They transfer power from the engine to the wheels and also move the drive shaft up and down in the case of bumps and pits. A bad U-joint may not be able to transfer power from the engine to the rear wheels, thus breaking the link between them

Transfer Cases. Ford Dana 20 Transfer Case: Type: Part-time, cast-iron, geardriven case. The Ford Dana 20 transfer case is gear driven with a cast iron case. It was used in early Broncos from 1966 until 1977 and it was used in some Ford pickups. It is drivers drop and it was available with a couple different low range ratios The transfer case is responsible for dividing the power between the front and rear axles. It is employed in vehicles that have a four-wheel or all-wheel drive system. A transfer case is also known as a transfer gear case, transfer box, transfer gearbox, or jockey box. It is connected to the transmission, and the front and rear axles through the.

Sounds like you've got some bad bearings in the front differential, or possibly the transfer case. A bad wheel bearing (assuming only one side is bad) would be easily found by swerving the car on the highway back and forth. Every time the weight of the vehicle is applied to the wheel with the bad bearing, the noise would get louder Symptoms of a bad transmission control module include: You can't shift gears or your vehicle is stuck in gear. You experience significantly lower gas mileage. Your vehicle seems to have trouble downshifting when your vehicle slows down. Your vehicle's engine roars loudly and has difficulty shifting to higher gears when you attempt to.

Transfer Case Control Module Symptoms You Should Not Ignor

The assembly number is the key to getting a direct drop in replacement. Information is also provide to assist you in identify which Yoke and Switch types that your transfer case has. So the next time you need a rebuilt transfer case remember - all transfer cases are not the same - you can never make a bad decision by choosing the best So I figured I'd send the drive shaft in to get it balanced. the U-joints felt fine. I got the drive shaft back and installed it only to get the VIBRATION back and it feels worst then it was before. so i'm not sure if I have a bad driveshaft, bad balancing, bad joint or bad transfer case...

Checking the intermediate shaft diameter is a quick, easy way to identify what vehicle a transfer case was originally used in. Keep in mind, however, cases that originally had the 1-1/8 intermediate shaft and caged rollers may have been machined to accept the 1-1/4 shaft and uncaqed rollers, because of the superiority of this later style bearing At some stage my car literally stopped in the middle of the road making extremely terrible sounds; I managed to get it to a nearby mechanic where I was told I would need to change both transmission and transfer case which would cost a considerably great amount; when I looked into it carefully using my little mechanical knowledge and experience. Transfer Case. This is the device that splits the power between the front and rear axles on a four-wheel-drive car. Back to our corner-turning example: While the differentials handle the speed difference between the inside and outside wheels, the transfer case in an all-wheel-drive system contains a device that allows for a speed difference between the front and rear wheels The transfer case can either be shifted manually, or by a dash mounted selector switch. The dash switch works by sending power to an electric transfer case shift motor, that shifts the transfer case for you. Unless you're driving a Ford Super Duty (F-250 / F-350) or something really old, you likely have a switch on your dash to activate your 4WD A transfer case is a part of the drivetrain of four-wheel-drive, all-wheel-drive, and other multiple powered axle vehicles. The transfer case transfers power from the transmission to the front and rear axles by means of drive shafts.It also synchronizes the difference between the rotation of the front and rear wheels, and may contain one or more sets of low range gears for off-road use

Can I Drive My 4WD Truck Without Front Driveshaft: Rear

The 2015 Jeep Cherokee has 5 problems reported for service 4 wheel drive message comes on. Average failure mileage is 58,050 miles If it was the transfer case, then it would have given me this hell with low fluid, bad brakes/rotors, dry rotted tires and failed back wheel sensors. If all this was replaced and fluid added, it wouldn't get any worse. I don't think it's the transfer case, though if I drive it again like that it will be or far worse A second remanufactured transfer case was installed and followed the same pattern as the first: the Jeep drove fine for a couple of days and was returned again with the same problem. At this point the shop decided to replace the transfer case shift motor and the FDCM (Final Drive Control Module). The vehicle appeared to be fixed as the customer. Re: dealer advises not to use Auto 4wd. Feb 05 2015, 3:18pm. Here is a GM explanation of how the AUTO system works. Automatic transfer cases will have the characteristics of both the Part-Time 4WD and the AWD systems depending on the mode selected. If the transfer case is operated in 4HI or 4LO, it will behave as a Part-Time 4WD system As we discussed in the article about part-time 4WD, when you engage 4WD, the transfer case locks the front and rear drive shafts together. They send the same amount of power, or RPM, to the front and rear differentials. When making a turn on dry pavement the front wheels are forced by good traction and geometry to rotate faster than the rear.

I own an 2015 Macan S, 32000 miles and have problems which having read other blogs is clearly the common transfer box failure, Like driving over pave in 1st and 2nd and on hills Road and transmission noise. The 4×4 Sprinter is louder on the road than its 2WD counterpart, whether you have the 4WD engaged or not. The transfer case and front differential seem to add noise. It's OK to drive at highway speeds with 4WD engaged. Fuel consumption doesn't vary much from 2WD mode, as far as we can tell For the 208 to work behind 350 you need spacer and Adapter. the 205 adapter will not work on the 208. no i know the difference. theres a spacer that goes inbetween a 700 and a 205 to mate those to together. sorry i should have got the whole link, instead of a little quote. they talk about the spacer in this link

Is it my transmission or my 4x4 transfer case? - CarGuru

Transfer Case: Here is a good summary of the function of the NP248/NVG248 transfer case. If the internal parts of your transfer case are damaged, you may rebuild it or buy a used unit. If you are taking the transfer case apart, you may want to put in a pump rub kit to prevent a leak and costly repair later Fix your 4 wheel drive system with a new complete transfer case. If you're existing transfer case is in need of repair, whether it be a broken chain, gears, or maybe even a cracked housing, now you can simply replace the entire transfer case with a brand new unit. Take the guess work out of repairing a damaged transfer case all togther All Wheel Drive (AWD) transfer case for GMC Yukon, Denali, Sierra 2001-2005. Cadillac Escalade Ext. Esv. 2000-2002. Call with your VIN # or Model # (located on rear case half of transfer case) to insure we ship you the right transfer case for you vehicle. 27 spline Input Gear The addition of a center differential is the main difference between the NP 242 and the NP 231 or Command Trac transfer case. Without a differential, the 231 transfer case offers only part time four wheel drive mode. The NP 242 transfer case Full time mode opens the center differential allowing the front and rear axles to rotate at different.

Within the transfer case there's either a chain or several gears that control the rear drive shaft and the gearing for the front drive shaft. History of 4WD and the Transfer Case One of the first four-wheel-drive vehicles was to have been produced by Ferdinand Porsche, who would then start the legendary Porsche sport car line AWD System one (true all wheel drive - or full time AWD) has a conventional differential inside the transfer case - each of the wheels gets about 25% of the torque as long as traction is equal.However, the center diff cannot be mechanically locked. To prevent a complete loss of traction when one wheel or one axle would spin, a viscous coupling or a similar device like a Haldex coupling (see.

Can a transfer case chain cause a driveline vibration

#2 The dealer suspicion was confirmed. The 4X4!, Traction Control, ABS combo is the result of a failing Transfer Case. Consistent with my can feel the AWD in the original post the dealer confirmed that the Transfer Case has not died yet but it is close. When it does die, it will shift to RWD only until repair The transfer case is always working, whether you use the four wheel drive on your vehicle or not. Your transfer case fluid level should be checked every time that you get an oil change. In the old days, transfer cases were filled with gear oil or automatic transmission fluid (ATF), but some modern transfer cases take specialty lubricants Caught Driving Without Valid Registration? Get Legal Help Today. If you're looking to fight a citation for the registration of your vehicle, you'll want a lawyer on your side who knows the ins and outs of traffic court. In most cases you'll simply pay a fine, obtain the necessary paperwork, and be on your way If both shafts are turning, but one wheel is not, the problem is a bad hub on the wheel that isn't turning. If the front driveshafts are not turning when the transfer case is in four-wheel drive, the problem is inside the differential (broken side gears) or the transfer case (broken chain, shift linkage, etc.) Hard drive failure may result in many problems, program crashes, disk errors, blue screen of death, and more. When you encounter hard drive failure, can you clone a failing hard drive to another HDD or SSD without losing data? EaseUS Disk Copy makes it possible to clone a failing hard drive in Windows 10

Switches in both these actuators feed back to the 4WD ECU that both the front ADD is engaged and the front drive shaft from the Transfer Case is engaged. Also, an additional switch in the Transfer Case Actuator reports to the ECU that 4Lo is engaged when it is selected. At this point the job of the front ADD is done This article will take you through symptoms of a bad transmission speed sensor. Things to look out for include harsh shifting, inoperable cruise control and a check engine light The transfer case is engaged by a lever on the floor (the one on the left): The transfer case knob has the transfer cases shift pattern printed on it. (Ford Ranger transfer case) Below is a front locking hub for a Ford Ranger. If you look closely, you can see that the hub has the words LOCK and FREE cast in to it High Gear Transfer Case HG103-6. $. 1312. 99. + $ 500.00 Refundable Core Deposit. Part # HG103-6. SKU # 1094981. Year Warranty. check if this fits your vehicle

A: Noise is the most common symptom of a bad wheel bearing. However, there are other potential signs as well, such as vibrations while driving. At low speeds, you will be able to feel the vibrations, while at higher speeds, they'll manifest as humming sounds the root cause goes a little deeper than that, but a bad vacuum switch on the transfer case of four-wheel-drive (4WD) vehicles is the major culprit. Sowhat the heck does the engagement of 4WD have to do with the HVAC system? More than you might think. The reason for this has to do with GM's use of engine vacuum as a source of energy to mak Borge Warner manufactured these transfer cases for the Ford Motor Company. The BW1356 was manufactured in both manual and electric shift, it is a replacement unit for the earlier BW1345 transfer case, This Borg Warner 1356 is a part-time, chain drive, 2.69:1 ratio, and has a magnesium case. In addition to a rebuilt 12 month warranteed. TRANSFER CASE All Years. While you could purchase a two-wheel drive Unlimited JK in 2007, most Wranglers are four-wheel drive. Splitting the power to the drive axles is either a New Venture Gear 241 or 241OR. The OR version is only found on the Rubicon models and is equipped with a 4:1 low range ratio instead of the regular 241's 2.72:1 low.

Does this look like a bad rear main seal? - JeepForum

Most Popular Parts. BMW X5 Transfer Case. BMW X5 Transfer Case Motor. BMW X5 Transfer Case Seal. BMW X5 Transfer Case Bearing. BMW X5 Transfer Case Motor Gear The Borg Warner BW4405 is a chain drive electric shift transfer case. The Borg Warner model 4405 part time transfer case was utilized by Ford Motor Company in 1995 to 1999 in the Explorer. Transfer case save is available . Give us a call toll free 800-216-163 and let us help save you some money, ask about our good take out parts (used) The Bits And Pieces Of Hughes' All-Conquering TH400. Here's an exploded view of al of the components that make up a Hughes Turbo 400 build. From left to right, top to bottom are: valve body, output shaft, pump stator, planetary gear sets, rear band, pump body and gears, direct drum, direct clutch pack, forward drum and input shaft, forward. Access Google Drive with a free Google account (for personal use) or Google Workspace account (for business use)