If you have a "surging idle" (idles speed goes up and down repeatedly cycling every few seconds) this is most commonly caused by a lean condition and lean conditions are usually the result of a vacuum leak.
If the idle speed is significantly greater when the engine is cold than when it is fully warmed up, this is normal.
If the idle speed is greater when warmed up than when cold, this indicates a malfunctioning idle speed control (IAC). You can get a replacement unit from your parts supplier or Toyota dealership parts department.
If the idle switches between two speeds at regular intervals this may indicate that you have the air conditioning (or defroster) engaged.
Check throttle positioner adjustment.
where is located the oil pressure switch for 94 geo prizm
Geo Prizm door handles are the same 1993-1997
No fire to the distributor 94 geo prizm lsi? In:http://wiki.answers.com/Q/FAQ/773 [Edit categories]
In the fuel tank
For my 94 Geo Prizm it's a 30mm.
This might be helpfful. How do you Change a fan belt on 94 prizm?
You may find some help by searching for this question.How do i replace the water pump on a 1993 Geo Prizm 1.8L?
Every 5.000 miles
This was for a 1994 but try searching here. How do you Change a fan belt on 94 prizm?
96 and 97 Corolla and Prizm are the same, but, they have an extra crankshaft sensor, that the 93, 94, and 95 does not have,
On my 1995 Geo Prizm, cannot open trunk from inside of car.
It is built into the alternator. I would just replace the alternator.