1990 geo Prizm

Asked by Apr 19, 2016 at 01:59 PM about the 1990 Toyota Corolla Base

Question type: Maintenance & Repair

My 1990 Geo Prizm runs fine until I try to accelerate
like I'm trying to pass somebody on the highway and
then it completely loses power if I accelerate very slow
it accelerates fine it's just that hard acceleration it
loses power it has new spark plugs new spark plug
wires new distributor and new alternator and new
battery and a new air cleaner

3 Answers

96,655

How about changing the fuel filter?

Yes I did that and a new fuel pump to

96,655

OK, then I suggest you check the fuel pressure, it could be the regulator dumping too much pressure, and if that checks good then on to the coil output, if it isn't strong then it could cause a power loss harder acceleration, if that checks then test the exhaust system pressures, even though it may not be plugged very much, and increased flow as during acceleration might be too much to handle all at once. That's about all I can think of at this point. HTH

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