1990 Geo Prizm Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 Geo Prizm
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1990 Geo Prizm ProblemsAutomatic Transmission May Not Shift Correctly at High Mileages
At higher mileages, (125,000-150,000) the automatic transmission may not shift correctly. This can be caused by the throttle position sensor being out of adjustment or a shift solenoid needing to be replaced. Typically the transmission does not need to be completely overhauled.
If the engine will not crank over, the most common problem is the starter. These will tend to go out at about 100,00-125,000 miles. Sometimes it is only the starter solenoid, but often the complete starter (including solenoid) needs to be replaced.
The ignition coil inside the distributor may fail. Our technicians tell us this may result in a hesitation on acceleration, especially when the vehicle is warming up on cold, rainy days. The pickup coils inside the distributor can also fail and cause a no-start condition. There have also been some failures of the radio noise suppressors inside the distributors, which can short out. Our technicians recommend replacing the whole distributor with a complete, genuine Toyota distributor if any of its components fail.
1990 Geo Prizm QuestionsThe new front motor mount is mounted but won't line up with the hole to put the bolt through..what should I do? (1 answer)
my engine lite comes on and stays on for a few daze the off again. very intemittant. can not get a code reading when it not on..Ifigure EGR. is that the device on the top of the engine that has an 'adjustment valve' on it ???
appreciate the help.. the service manuals I have are only the ...
The car turns over and runs great as long as I feed it starter fluid. I can hear the fuel pump priming so I disconnected the fuel line from the fuel rail and watched a good flow of fuel coming out while I was cranking the engine. With the key in the on position, I put a test light through the yel...