1991 Geo Prizm Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Geo Prizm
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1991 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.
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.
The EGR System tends to get restricted or blocked with carbon after 100,000- 125,000 miles which will cause an emissions test failure for NOX. If the EGR system is equipped with an EGR temperature sensor it will trigger a Check Engine Light for improper EGR flow. The repair is to clean out the EGR passages and the EGR Temperature sensor. Our technicians tell this repair is pretty straight forward and takes about 1-1.5 hours. It is also wise to verify the EGR system components i.e. the Transducer, EGR Valve and VSV Solenoid at this time.
1991 Geo Prizm Questionsis there a replaceable ignition coil on 1991 Gep Prizm. (1 answer)
1991 Geo Prizm stopped running while driving. No start after that. Getting fuel past the fuel filter. Rotor and cap less than a year old. Removed cap and rotor turns when trying to start so I am guessing it's not a timing belt issue. Car has 61000 miles. Wanted to know if anyone can tell me ...
Uped to 30 amp fuse works a while then blows. Same problem again. Mechanic thinks might be in the compressor. Do I need to replace it?
Im unable to figure out what wires are what and go where on the new stereo there is no wiring harness and im unable to figure the wires out