Question about Pontiac Sunfire
Changed drivers side half shaft and now has no forward gears or reverse. What may cause this?
If it was moving prior to this repair then most likely the axle isn't fully engaged. This would make all the power go to that wheel and render the vehicle motionless. Make sure you got the right axle and that it engages into the final drive.
Posted on Apr 18, 2014
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Posted on Jan 02, 2017
Just a couple of things to check if you haven't compare the smell and apearance of the tranmission oil to so new, if it looks dark and smell burned you probably have a bad transmision, clutches or burned up. Does it whine or make any noise? a stopped up filter will do this. also is it full when warm on the dip tick runniing in park?
Posted on Dec 31, 2008
It appears you have a Forward Clutch FAILURE. Replace the trans after you get it diagnosed and verified by a professional technician. By the way, do you have a Check Engine light? If so, what is the diagnostic code? The dealership can scan the system and find any codes which may have been stored in the TCM (Transmission Control Module). If there were any 'Incorrect Gear Ratio" codes, it's most probably the trans itself.
Posted on May 28, 2009
SOURCE: transmission will not shift
Check the Vehicle Velocity Sensor (V V S)-(Speed Sensor) or the wire harness to the VVS. IF the ECM is not getting a signal from the V V S, the PCM can not give the signal to switch gears. The V V S is on the drivers side of the end ot the transmission that is held on by one bolt. Best thing to do is to have the truck scanned at Auto Zone for a DTC code and to confirm that the V V S has gone bad and they can give you the step by step instruction to replacing the sensor and takes about 15 min to do. Good luck and keep me posted. Keep an eye on the transmission fluid, make sure you don't run the transmission to hard and burn it out over a $40.00 sensor which is better then $1,800 for a transmission replacement.
Posted on Jun 22, 2009
Changing the fluid will never harm your trans unless you do not fill it back up.
Reverse is all hydrolic. There is no electrical that could cause it. If you have park and forward, you don't have a lincage problem.
As much as I feel for you, (I satarted rebuilding transmissions in the 80's) you will have to get it rebuilt.
Posted on Sep 03, 2009
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