1999 cavalier fuel pressure
#11
Senior Member
Posts like a 4 Banger
Thread Starter
Got a set of Noids and checked the fuel injectors. They all had signal (flashed) while engine cranked. I checked spark at plugs again & this time they were weak (yellow spark) not blue & strong. I did a compression test & the numbers are low - 60psi but my battery is weak & the engine is cold so not sure if this test is reliable. I'm thinking it'* ignition related but I'm lost at the moment. Any ideas?
#16
Senior Member
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Thread Starter
Checked the coils & they are OK. Checked connections again. Put 3 gallons of gas in just to be sure it wasn't out. Hate to say it but--I give up. Going to have it towed to a shop.
#18
Senior Member
Posts like a 4 Banger
Thread Starter
update: Shop checked fuel, injectors, ignition & found no problems. Checked compression: 30-0-75-85psi. Not good. Need engine rebuild or another engine.If i get a used engine, will I need to get the pcm also? Anything else?
#19
Senior Member
Certified GM nut
You can more than likely keep your existing computer if and only if the donor car is both from the same year, make, and model; and has an identical engine.