Truck Runs like sh*t
#1
Truck Runs like sh*t
ok, so if i let the truck sit and idle... the idle will start to drop until almost and sometimes stalling... when it does this, it sounds like it develops a big vacuum leak... if im driving it, its fine but even if im waiting for a red light it will start to die out... when i let off the gas to coast to a stop, the idle gets real low for a second... im stumped, please help!!
#6
No, and that is actually a good start. Do a search here for "plenum". And replace the pre cat o2 as suggested, as it can be bad, but not throw a code. Problem is, even if it is bad, it is not the root of the problem. Do the plenum search as I suggested and you will learn a lot. And since you have a 96, you might also have an EGR problem. But not as likely as the plenum.
#7
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#8
You made some calls? How about getting under it and looking? If it has two PRECAT o2 sensors then yes, replace both. That means it has California Emissions setup. (Odds are it's not depending on where it originated from, and has only a pre and post cat sensor) Federal Emissions setup. Get off the computer and look! LOL
Btw, all you have to do is open the hood and look at the VECI sticker to find out what emissions it came with.
Btw, all you have to do is open the hood and look at the VECI sticker to find out what emissions it came with.
Last edited by zman17; 09-18-2010 at 12:51 PM.