help me out here guys!

[Ramsey]

so my truck goes rich at idle if it sits too long idling.but i go up the rd .and it goes lean immediately i guess because the pcm tells it too go lean,idk..i sent allen a scan and he said im basically have a exhaust leak causing my o2s too go crazy. my rear02s are disabled.allen says look between the head and the o2 for exhaust leaks.that only leaves were the collector is hooked too the ball and socket.,actually no ,the front o2s are before the ball and socket .i keep getting po171 po174 codes ,he says the trims are fine but the o2s are fine as soon as im off idle.will any exhaust leak cause this ,?is it because my rears arent even plugged into anything?im lost for ideas ,ide appreciate any ideas.or suggestions .i know i have a few taps but theyre further back than the front o2s.what the hell.i did just replace my header gaskets.cmon guys i m sick of clearing codes with the interceptor gauge.im running out for a min. but i will brb.too answer any questions.thanks,i need too solve this its annoying the sht out of me .

[LARRY01Z28]

my buddy has had the same probem. and its only in the winter time. wen its cold out.
he said he doesnt have an exhaust leak. so we where thinking it might be a bad o2?? but i havent personally checked it out. im just going by what he says.

[Ramsey]

mine happened whith cold weather 2 but allen says o2s are fine .interesting.

[Ramsey]

some help here guys .last night was slow

[Ramsey]

wow its like a ghost town on here.every1 get loaded l/n lol

[RedHeartbeat]

I would wonder about the fuel pump controller or the boost bypass causing the issue. If the fuel pump controller boosted the voltage up and started giving you more fuel all the sudden, the minimum injector duty cycle at idle may not be able to compensate for it to reduce the injectory pulse width enough to keep 14.7. Is there a setting in the controller that won't allow it to bump the voltage up under a specific rpm level?

Sorry, just tossing out odd ideas for an odd setup I'm not too familiar with.

I would suggest installing an electronic fuel pressure gauge so you can keep track of the pressure levels when you're having these problems. Cold temps affect spring rates and I wonder how it affects the spring rate of the fuel pressure regulator.

[txarkitekt]

I would definitely wrap up my wires in some kind of plastic to keep it away from the elements. Then tie them to the frame with some platic cable straps. For your app., the plugs should be gapped around .030-.032. What type of fuel pump are you running? Have you checked/replaced your fuel filter? What about your injectors? What size? You also need to make sure your MAF is clean. Do go out and bang around on it...use some contact cleaner spray.