tbrt02ss

I have a 2002 SS Camaro with 55,000 miles. When I bought the car it had a K&N air filter, ram air intake, long tube headers, no cats, the smog air pump has been removed, and 3 inch exhast all the way out the back to a single muffler. Car ran great for first 6 months, then after driving it through a very heavy rain storm, it started misfiring, sputtering at low RPM speeds and throwing random misfire codes that are jumping around to different cylinders. I have replaced plugs, wires and still hasn't helped. Any ideas?

zapp168

iTrader: (7)

Try replacing the MAF, swap one if you have a similiar car around

tbrt02ss

tried a brand new slp unit but didnt help. Thanx for suggestion

defenestrate

iTrader: (1)

this is going to sound too simple, but have you ever cleaned the filter? i got misfire and lean codes from a REALLY dirty filter once.

silver30th

iTrader: (13)

o2 sensors? mine got soaked on my lt1 one night...let it sit and dry and it was fine

1Loudz28

iTrader: (47)

^^ what sliver30th said. happened to me, pulled them out, dried them and it was all good.

BlueBeastSS

iTrader: (2)

Thats Exactly what happened to me O2 sensors got wet.

SSkillz

iTrader: (22)

02 sensors went out

SladeX

O2 sensors... mine tended to get a bit wet due to where I had placed the extensions and some water would seep. and even trigger a code. I rerouted the passenger side extension and haven't had a single issue now in heavy rain. Even though my extensions are covered and have proper plugs, I guess the design isn't as robust as GM's connectors or I just didn't make sure to connect them well. Next chance I have underneath I'll put some dielectric grease around the plugs to keep water out.

Summerwolf

iTrader: (3)

It flooded in AZ recently....had to replace the MAF and one of the 02 sensors....start there and keep going. The main issue with my car was the MAF though.

LS184

iTrader: (7)

any updates?

tbrt02ss

tried new o2 sensors and that has seemed to fix it for now. thanx for everyones help