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1990 Geo Prizm Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Geo Prizm

1990 Geo Prizm Problems

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 engine mount on the passenger side of the car can wear out on cars with high mileage. This will put extra stress on the other mounts and the faulty mount will need to be replaced.

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.

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1990 Geo Prizm Questions

Have looked and can not find which fuse it might be.

Where is the fuel relay fuse located at on a 90 Geo Prizm?

Have replaced fuel filter, fuel pump, distributor cap rotor, spark plugs and wires. The car has spark and fire but will not stay running. Do you have any suggestions please!

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1990 Geo Prizm Reviews

I have over 266,000 miles on this car. Very good car. Gets about 38 MPG. Will probably fix the car if it breaks since can't afford to buy another used car right now. Has manual transmission, no AC, heater takes awhile to heat up inside of car. Driver side front window doesn't work properly and probably can't be fixed since part needed now is obsolete but overall a GREAT car. So far, gets ...

300,520 miles Iand counting. I swear to you I have never changed anything on this vehicle. Ok maybe; the clutch, timing belt, radiator and put new seals on the front and rear main but other than that nothing.Oh wait oil lots of oil. I bought this car in Detroit in 1991,it has proven to me. that Toyota rocks.

I have only had this car for less than 2 years. I bought it with 137000 miles on it, and in the year and a half I have owned it, added 50,000 miles. The only real flaws I have noticed with it is that the AC doesn't cool down the car at all. It only cools down the person sitting right in front of it. My little prizm finally broke down a few weeks ago because of the master cylinder. I fixed it fo...

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