Hi all , need your help on this. Car was running fine (only done 65,000km) then, I did the following - degreased engine, hosed off, started up seemed to run fine drove car 30metres into Garage to do engine oil & filter change.
Came back next day to finish off, removed air filter assembly and blew out filter. Put back and tried to start car, but had a poor battery(was suspect prior) I jumped 94 from another vehicle parked near by.
Car slow to start but did and ran poor. After checking I found that I had left air hose off filter assy. put back on thinking I'd cured problem but still no good. I then fitted new battery to car just incase this may have had an influence - still extremely hard to start (cranks over & over) runs real bad - will idle but not driveable - back firing through exhaust. Could I have 1. Moisture in some component/wiring block, optispark unit? even though I let run for 15mins to try to heat moisture off.
2. Damaged PCM in jump start? 3. Unlucky enough for some component to have died ? Down under in Australia I dont know anyone that can trouble shoot these late model Camaro's. - buggered if I know !! "Yacka"

 

opti

 

Sorry didnt say- Camaro is a Z28 5.7ltr and pretty much stock other than wheels. You pretty much went right to the problem - I believe I soaked my OPTI. Earlier this morning I jacked car up and put a Hair dryer on the Opti and plug wires coming out for about 45mins.
I once again reset computer (pulled both Fuse 4-PCM Bat and Fuse 5 PCM fuel) I crossed fingers and fired car up.It ran lumpy for a second or two then went perfectly test drove and was back to normal. But ! - later in day after car cooled down took out again and although much better and driveable was running a little untidy - mostly pinging (knocking) under low speed load. I drove a short distance more and shut engine off. Started again and was much better then basically back to normal. I have now left car over night and see what a cold start tomorrow reveals.
Hopefully points to moisture being eliminated from opti. - hope no permanent damage.
I wont be in a hurry to degrease again!!! hope this helps others out. - thanks for your help

 

let it dry for a few days...you should be fine. i had problems recently and went as far as buying a LTCC setup...hanvent put it on and havent driven the car for a while. well...the jeep's down so i had to try it and it's working fine now.

 

Yes you were both right it was the Opti and after the hairdryer and an overnight rest the car has been back to Normal- cheers from a smiling camaro driver.