superstu23

i have a 2000 firebird 3.8l its giving me multiple radom misfires and when i clear it out it comes right back miss on two or 4 so on
ive replaced the plugs, wires,all three coil packs and had my ignition module tested at two different places and was told it was good 8 times ,also replaced my cam position sensor and no luck whats next?

KeithZ28ss

iTrader: (1)

My wife has an 01 Camaro with a 3.8 and it is missing like crazy too. I have no idea why, but might have to do with a bum lifter and 143k miles.

Here are my thoughts. What are the things you need for ignition? Spark, air, fuel, and compression. I think you eliminated the spark from the equation, so it might either be fuel, air, or compression.

Might wanna check the fuel injectors and the compression of the missing cylinders.

Let me know if you find anything.

Tolley's94z28

iTrader: (4)

same happened to me on my old v6 f-body, for me it turned out to be an injector, replaced it and it ran fine

omarrakeen

iTrader: (2)

i had a 1996 3.8 last year and it did the same thing, i changed up everything from wires plugs coils and nothing! then i changed the freaking fuel pump and it ran fine. you might wanna check your fuel pressure.

LS1MCSS

iTrader: (18)

Also check the resistance on the injectors. They should be around 12 ohms. If they are somewhat lower, say 8 or 9 ohms, that could very well be your problem.

superstu23

figuered it out turns out one of the new coils was bad as well i had six new coils in the boxes and tested them with a meter and only three of six were good

MattxFatal

iTrader: (4)

If it comes back you need to check out your injectors.