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Transmission slips on 4th gair on uphills computer shows "trans. Sawe. Program". Computer checking showed that problem is 4th gear slips.is it danger to use the car? can this be any electrical problem?

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It could be a solenoid in the transmission but the end result is the same. You need to have the transmission checked and serviced at a shop.

Posted on Jul 11, 2010

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Mk 7 transit only drives in 4th gear just revs like being in neutral in all other gears including reverse. Is this a clutch problem


A clutch problem would most likely show up in all gears. Does the vehicle have normal performance in 4th gear, or does it act like the clutch is slipping? If it behaves normally in 4th, you have a problem with the transmission.

Jan 17, 2017 | Cars & Trucks

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1991 chevy lumina automatic transmission, slips in 4th and overdrive, and you can push the car in all gears except park


Well, you can push any automatic trans car in any gear except park.
As for slipping in overdrive which is 4th gear, if the trans is full of fluid, you're probably looking at replacing it to fix it.
Could be a list of things such as clutches or dirt in the valve body.

Jul 11, 2012 | 1991 Chevrolet Lumina

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Transmission will not shift into high gear


Before guessing at transmission problems, check the fluid level (car warmed up, engine running in Park on level ground) and have the PCM scanned for trouble codes FIRST. This guide is meant for problems that do not show up as PCM codes (like shift A&B solenoid failures, for example).
Also note that many problems that show up as transmission issues are actually PCM or electrical, and may be external to the transmission. Try a different PCM, and check for chafing where the cables come out of the PCM.
What is "limp-home mode" ? This is a fault mode in which the transmission either loses electrical power or the PCM deactivates all of the electronics. The transmission will default to max line pressure. The driver will have Reverse and 3rd, with manual 2nd available by putting the gearshift in 2 or 1 (doesn't matter). 1st, 4th, and TCC lockup will not be available. It will not hurt the car to drive it like this for short periods, but use manual 2nd to get the car moving, and be aware that the trans will generate more heat than normal while operating in limp-home mode due to increased torque converter slippage during 2nd gear starts and no lockup in 3rd gear.
No 1st or 4th available; trans shifts 2nd to 3rd by itself in D or OD and locks the converter : ShiftA solenoid failed. Easy fix in the pan. Or a wiring problem from PCM to trans.. or PCM.
Trans shifts into gear harshly, car feels sluggish off the line, No 1st, 4th or TCC lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on: Transmision is either in limp-home mode or has lost electrical power. If there are lots of error codes in the PCM, check the underhood fuse that powers the transmission, and if it pops again, look for a short in that circuit like an O2 sensor harness touching exhaust. Otherwise, check PCM codes for a particular fault in the transmission causing the PCM to put it in limp-home mode.
Thank you for using fixya and good luck. Check all your fuses first to ensure it's not a simple as that before you take it to a transmission shop. Call around, most transmission shop will scan free of charge to inspect the condition of your transmission.

Apr 16, 2010 | 1998 Oldsmobile 88

2 Answers

Code p0734 4th gear ratio auto transmission


this means the trans is slipping as measured by the input and output shaft speed sensors.

Dec 09, 2009 | 2004 Nissan Altima

1 Answer

Trans drops into 3rd gear won,t shift to 4th


DTC P0734 is "4th gear incorrect ratio" - that's your torque converter 'LOCK UP Clutch" It's worn out (or you're using the wrong Trans Fluid required by Hyundai - SPIII OR Both). The P1624 is simply the Trans Control Unit (computer) communicating to the Engine Control Module (ECM computer) MIL - on request signal to ECM = asking it to turn on "Check Engine" light. MIL = Malfunction Indicator Lamp. When the torque converter 'lock up" clutch slips or doesn't engage, the trans automatically returns to 3rd gear and stays there (it's called 'fail safe' mode) until you cycle the ignition key, then everything resets until the malfunction occurs again.
You'll need to have an AT (Automatic Transaxel) tester hooked up to verify this. Hyundai has a Service Bulletin specifically for "gear incorrect ratio' codes. If when you changed the trans fluid, was it done at a Hyundai Service Center? If not, someone may have installed the wrong fluid.

Jun 01, 2009 | 2000 Hyundai Elantra

1 Answer

4l60e slips in 3rd and 4th


There are to many things that can cause this problem, best thing to is go get the ECM scanned for DTC codes at a transmission shop or Auto zone or Parts Source since they scan for free.
The ECM should have DTC code in it's memory on how the transmission is Performing and have the Transmission line tested for Fluid pressure.
Good luck and hope this helps. Oh and also ways check with more then on transmission shop if there tell you that you need a new Transmission,
It could be a simple as the transmission filter falling off causing the lost of transmission fluid pressure. Check the transmission fluid too.

Apr 15, 2009 | 1996 Chevrolet Camaro

1 Answer

I have a gearbox error showing on the dash and i pulled code number p0734: gear ratio error in 4th. normal accell 4th gear neutrals out and hits rev limit at 3k rpm. trans been rebuilt 3 times and valve...


The code you are reading is a bit misleading. The gear ratio is not incorrect, the slipping in 4th gear is what the computer is seeing and reading it that way.
Unless you can find a competent shop to do your rebuild, your only other option is to have the shop you are using stop rebuilding the one you have and get you another complete unit. There could be a problem with your original, such as slight porosity in the case, permitting a pressure drop which they are not seeing. (or they are repeating the same mistake each time they rebuild it!

Apr 13, 2009 | 2003 Jaguar X-Type

1 Answer

Automatic gears


Honda transmissions,as well as most other overdrive transmissions,should be driven at all times in drive 4,or the overdrive position,with the exception of severe driving conditions,such as towing a load,extremely hilly terrain,or long uphill grades,the trans should be taken out of overdrive,and placed in the drive 3 position.This is to prevent the perpetual shifting back and forth of the trans from 3rd into 4th,back to 3rd,back to 4th,back to 3rd,that would eventually damage both the 3rd and 4th gear clutch discs and components.

Aug 08, 2008 | 1994 Honda Civic

1 Answer

Transmission


are you sure you got the filter back into the hole tight it sounds like its leaking. also are you sure you used the right trans fluid some models require type 111 trans fluid instead of dextron mercron. double check these things its also a good idea to adjust the bands when you service the transmission. was there a lot of metal or black stuff in the pan. this shows a lot of wear in the transmission. and the need for a band adjustment.

Jul 03, 2008 | 1993 Chevrolet S-10 Blazer

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