1992 Chevy Lumina Stalls at Idle

Yikes! :shock: Sounds like you dug a bit of a hole :lol: The intake manifold gasket is probably leaking, and while your there replace the distributer o-ring gasket. MAT is the MAnifold air temperature sensor. Also known as an Air intake temperature sensor. Try disconnecting it and seeing if the symptom changes. If so replace it What was that? Oh! It's right here 8)

okay i pulled the intake tube off to clean the throttle bore to see if this would help my stalling problem, it was dirty but my main concern was that the vent tube that goes from the valve cover to the intake tube had a trace of motor oil. my first thought was oh no the rings are fryed, but it does not smoke or even smell like it is burning any kind of oil. is it possible that the intake gasket(that is leaking)could cause pressure in the crankcase? also the distributor port is leaking horribly, could this cause pressure in the crankcase? im mind boogled guys, sorry about all the questions i just want to be ready for anything when i tear into this thing this weekend. i appreciate any advice and i will be making a pretty genorous donation since you all have been so helpful to me.

Serious donation? That makes us happy!

You can post a pic with good lighting if it helps to describe. One thing to look for is a plugged pvc system, Pull the pvc valve and make sure it has vacuum. A restricted one will cause pressure. These are notorious for the intake gaskets, restricted fuel injectors, and the leaking dist o-ring seal. My advice is to get a couple of cans of good intake cleaner when you do this job and get the most current FEL-PRO intake manifold gasket set. You'll need one or both of the egr gaskets, the dist o-ring gaskets as they don't with the set. Alos pick up a set of fuel injectors oring gaskets-I think sk-9 is the standard number, not positive. There are 2 o-rings per injector, just replace the ones that are exposed. You want to change the oil when you done as some coolant may get into the oil on this job. Add fresh 50/50 coolant as well. You might want to have a set of plugs and wires while your there and they are a little more accessible. Clean the IAC as well.

i pulled the MAT sensor out to check that as well and it is totally fried, i dont even have to test it because it looks like it burnt up or something.the end of it is melted and black. not sure if this one sensor would cause me all this grief(car stalling all the time)would it? im sure that im not soooo lucky that one sensor could fix the problem aside from the massive oil leak....lol. as for the pcv valve, almost positive that it is stopped up just like you guys said. uuuhhgg i really opened a can of worms buying this car, atleast im learning something, right?

Yes, you are learning something. And remember it's fun.

Check your email. One sensor can give the car headaches. The oil and coolant aren't going to stop however. I have found that if you spend less than a grand on a car, you'll put a grand into it if you aren't doing the work. And you get to have fun to boot!