Tired of this problem

[Skeeve]

Ok guys, and gals... my 99gt is tickin me off, it usually dies on me about 3 or so miles down the road after i first start the car, what ive noticed, if i take the oil fill cap off and wait 5 or so min, it will start right up, further into that, i get a white vapor that comes out of the oil fill, i had one guy (in a gp gt) whip it around today and stop to offer help (cause GP'ers gotta stick together right) he said odds are its the plenum or the gasket. im losing coolant constantly as well, its gotten to the point where i dont even put coolant in anymore i can drop easily a 1/2 gallon in a day or 2 no unusual overheating though.... any ideas? (i only have around 300 to spend) I need to get this fixed, my job requires that i drive all over all day long.

[Hoganperformance]

do you have water in the oil???? or oil in the water????? do you see the coolant leaking???? and have you changed your PCV valve??

[Skeeve]

no water or oil mixing
cant see it leaking
and no i havent replaced it

[SDGTP99]

Is your fuel pump working properly? Or your leaking coolant in through the LIM.

[Skeeve]

fuel pump is working fine, and i dont know where im leaking from

[SDGTP99]

LIM gaskets go bad in these cars. Get the Metal LIM gasket from Pontiac or wbodystore.com or wherever & replace that plastic leaky thing.

[Skeeve]

so youre saying its the lim and not the plenum gasket?

[1bad3800]

i have a l.i.m if you need that i can let go pritty cheep if you are intrested..... if you need that

[Skeeve]

how much to with shipping to 33534
got pics?

[Bio248]

does it make a loud hissing noise when youre driving it? like its building up a lot of pressure? could be a junk PCV.

[Skeeve]

i do get a hissing sound sometimes, it sounds like its coming from underneath on the driver side

[Hoganperformance]

the first thing I would look into is the coolant leak. find out where it is leaking for sure and take it from there.

[toolguy]

the first thing I would look into is the coolant leak. find out where it is leaking for sure and take it from there.

Right on!

You have to addresst this first and should not ignore and keep driving it.

I mean really, how can you expect the engine to run properly if it keeps ingesting, or burning up coolant?

[Skeeve]

Right on!

You have to addresst this first and should not ignore and keep driving it.

I mean really, how can you expect the engine to run properly if it keeps ingesting, or burning up coolant?

which is the reason why i was asking about the plenum, i cant afford to just tear the engine down to find the problem, im looking for odds like "odds are its probably the plenum gasket"

[blueguy]

Odds that it might need all new gaskets top end wise.

LIM, UIM, TB, new vacuum lines since dry rot is a big issue. New T-Stat and coolant flush to get rid of the crapxcool...and replace with the green stuff.

[Skeeve]

Odds that it might need all new gaskets top end wise.

LIM, UIM, TB, new vacuum lines since dry rot is a big issue. New T-Stat and coolant flush to get rid of the crapxcool...and replace with the green stuff.

vacuum lines seem to be in good shape, dont look dry rotted, just dropped tstat in not too long ago already got rid of crapxcool
but as for the rest, thats probably what i'll do
thank you

[Hoganperformance]

any shop should be able to tell you where your leak is coming from. They can pressurize your cooling system and pin point it.

[Skeeve]

any shop should be able to tell you where your leak is coming from. They can pressurize your cooling system and pin point it.

and ill start by doing this, just to make sure i need all the gasket changing

[Skeeve]

well, there is a pinhole leak in the radiator, could that cause me to lose a gallon every few days?

[kfish]

it could, are you leaving puddles where you park? and smell your exhaust. if it smells sweet your burning coolant. you could have both things wrong lol