engine temp prob

Sounds like the t-stat or the radiator clogged.

I had the exact same problem with my tahoe but i didn't get it figured out before I wrecked it.

iceman7329 said:

Sounds like the t-stat or the radiator clogged.

Click to expand...

god, i hope its not the radiator

mgrotel said:

god, i hope its not the radiator

Click to expand...

probably not, but even if it is a new one is like $80. not THAT bad

forgot to mention a slightly important item, one of my cats is rattling really bad so maybe an exhaust backup causing overheating? still doesnt explain the lost coolant though

Opps, I forgot about those vortech intake gaskets. Thats probably your problem.

iceman7329 said:

Opps, I forgot about those vortech intake gaskets. Thats probably your problem.

Click to expand...

have you replaced those gaskets before?

They are a bitch to do.

Matt (kawamatt2) did an awesome write up a few months back.

http://www.gmfullsize.com/forum/showthread.php?t=76029

96tahoelt said:

They are a bitch to do.

Matt (kawamatt2) did an awesome write up a few months back.

http://www.gmfullsize.com/forum/showthread.php?t=76029

Click to expand...

oh shit, thanks man

I had a similar problem it turned out to be the heater quick connect fitting on the intake, had a slow leak in it until it snapped off. Possible intake gasket???

fanstatic

mgrotel said:

have you replaced those gaskets before?

Click to expand...

No, but Ive read somewhere they are a bitch :rofl2:

Well I guess it depends on how much work you have done before. I say they are a bitch just because it can be time consuming.

well, went out and looked at it closer, cant find any external leaks at all, the radiator was much lower than i thought, maybe a third of the way full. the inside of my oil filler neck was coated with some disgusting red slimy stuff. ive never seen what oil and coolant look like mixed but if i had to guess, that would have been it.

filled it up with coolant, im gonna drive it for a little while and see if more coolant decides to dissappear. if it does, i might just have someone do an engine rebuild for me, ive been battling noisey lifters and it has 215000 miles on it anyway.

edit: also, when i took off the oil filler cap, there was a little bit of smoke coming out of there, dont know what that means, coolant burning?

The red slimy stuff in the oil filler tube is one of the indicators that you have leaking gaskets.

96tahoelt said:

The red slimy stuff in the oil filler tube is one of the indicators that you have leaking gaskets.

Click to expand...

yea, thats what i figured :nono:

just looked at it again and it seems like i have coolant playing hide and seek with me, i also found some nasty, yellow, sludge stuff on the inside of the oil filler neck, smelled like shit.

but when i check my oil with the dipstick, it doesnt seem milky to me, maybe because im looking at such a small amount?

hey man I had the exact same problem with my 97 GMC vortec.. that red stuff in mine ended up being mud, I replaced my radiator, then thermastat, then engine tep. sensor, then intake gasket (looks like a cone or somethin like that), engine still ran hot.. finally I found out my water pump was shot.. I think if the coolant is smoking that you have mud clogged up in your radiator if you do any of that.. could be mixin with the oil too but my guess would be the radiator clogged...

Do you do alot of short distance driving? I have actually found with mine that even after the intake gasket replacement if i am doing alot of short little jaunts not getting the oil up to operating temperature i will get some of that rust colored build-up on the inside of the oil fill cap. But then if i have been driving like 5 or more miles there will be nothing on the cap. I think it may just be water condensing in the tube from the oil not getting up to temperature before shutting the truck off.