lol allrighty like the title says shes not running soo good.. sometimes in the morning when i first start it she idles ruff....then pans out, couple of days ago i passed somebody WOT and the exhaust backfired??..im kinda lost cuz it does it sometimes but not always...like tonight did some WOT pulls and nothing runnin like a 8K pound cheetah....i had an exhaust valve break a couple of months ago n got it replaced by dodge..no trouble codes either..im thinking maybe a faulty O2 sensor? orrr clogged cats?, im gonna try n pull some plugs n see what they look like but that wont be till sunday...any idears till then? thanks

 

wow no takers? Well I have a few idea's First thing is first make sure all your vacum lines are clear. 2nd you may have a bad signal to the ecm I'm not sure what it's called but when cold; the timing should forward itself too compensate for the conditions (atmospheric). If this doesn't happen your motor runs like shlt till warmed up. If all else fails try disconnecting for five minutes ( the battery) That will make the computer re-learn the motor and it's operating criteria. Hope it helps let me know what the prognosis is thamks.

 

Yes, without looking at it, it is near imppossible to tell anything. The usual fixes include check for codes, reboot PCM, throttle re-calibrate, clean TB, read the plugs and/or change them, EGR, PVC, O2 sensors. Really all depends on what conditions you find while trouble shooting. Pls keep us updated and good luck.

 

Usually I find if there are NO codes, then it's usually the TB that is in desperate need of a cleaning. Although I have found the EGR to be the culprit also and at times will be messing up enough to kill power and fuel economy without being in bad enough shape to throw a code...

 

so what components should i be checking on the egr? just pull some stuff apart n take a gander or what? and my TB is pretty clean...just cleaned it about 3-4 months ago, but ill check it again...

 

to be honest I dunno . I mean spark plgs is an obvious, I couldn't tell you what a bad egr looks like. and well you already know about the t,b.

 

plugs or a coil breaking down possibly.

 

sry forgot to mention i just recently checked all my coils when i broke my valve spring..trying to diagnose, all tested good..im hoping for EGR to be the culprit, i may do a spark plug change also hopefully i find somthin...gotta wait till about 5 my girl took my truck to work