Sup guys, I just installed header, test pipe and exhaust on my car, and it was fine for the first 2 weeks, but now sometimes it's like i'm running on 3 cylinders or something, the car just have no juice at all and then suddenly it's fine again, do you guys have any ideas of what it could be???

 

5spd???
GSR, LS???

 

5 speed GSR

 

Does this happen at a certain RPM or just randomly???

 

it useally happen in lower rpms, but it keeps on going to maybe 6k. Ignition maybe, TPS???

 

My car ran like that, I checked spark plugs, ended up being the wires...

Check those, I gained and lost "juice" too...

 

thanks alot buddy, i'll go and check them, do you know what I should look for?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by matttegra &raquo;</TD></TR><TR><TD CLASS="quote">thanks alot buddy, i'll go and check them, do you know what I should look for?</TD></TR></TABLE>

Just change plugs and wires. If it still does it then change distributor cap and rotor. Probably about about $50 for all parts listed

 

cool, thx for your time guys

 

Don't really remember, it was cyl. 1 and somehow 2 later, people "said" I shot a flame b/c I backfired...

Sorry I just don't remember that...

 

Plugs and wires are good and the rotor in the distributor is fine, other suggestion??

 

I've unplug the O2 sensor and the problem seemed fixed, So i've plug it back and the same problem happened. I don't have any CEL though. Could it be a faulty O2 sensor??

 

or ECU

 

I would change the 02 sensor, seems like the culprit...

 

i'll try that, thx for your time guys, I'll let you know if it works

 

which one should I change, the front or the rear??

 

I changed the front O2 and the car runs strong now, thx alot for the help guys, appreciated