since i've gotten my supercharger its been pushing 220-240, if i stomp on it at all it immediately pegs to 260 on the temp gauge. The coolant is boiling inside the reservoir for christs sake. My fans are grounded to run all the time and I have a 160 thermostat. Help?

 

How old is your water pump? What kind of coolant mix are you running?

 

water pump is less than a year old, my coolant mixture is about 50/50

 

Do you have an air dam? What about the lower radiator hose? You're not running lean are you?

 

Sounds like a head gasket problem.

 

Wouldn't there be a lot of white smoke out the exhaust though.

 

Not necessarily, and on second thought could also be a cracked head. Before worrying too much, stop into a radiator shop and have them check for combustion gasses in the coolant while the motor is running. Most good shops have a tool/gauge for this. The fact that this condition gets worse under boost would point me to this check first.

 

Because of my supercharger ATI requires you to take off the air dam because of the intercooler, therefore making me ground the fans in replacement of the air dam. Im running rich and my lower radiator hose checks out ok. I heard it's possible that my cats are plugged or burned up, could this cause my temp to do this? I'm going to the shop tomorrow, we'll try the gases in coolant gauges. Head gasket sounds very appropriate given my symptoms. This could get expensive.

 

im new what an air dam soory about the question plz answere

is it something like a ventilator infront the radiador?

 

An air dam is a piece of plastic that directs air upward from under your car to cool the radiator, effective only when the car is moving and more at high speeds.

If your cat was clogged you'd notice a major performance decrease, the car would definitely feel sick as well as overheating.

Have a pressure test done to your coolant system to see if you have any leaks. You don't want any pressure bleeding off, it should be a closed system. If you do have pressure bleeding off, and you can't find any leaks, start the car and look for white smoke or see if you can smell any coolant. That could tell you if you're leaking into the intake, heads, or block itself.

Also.. if you've got that supercharger on a stock engine with relatively high miles, I'd plan on replacing the head gaskets soon anyhow, if you're pushing it.

 

You got no air dam, that's probably your problem right there.

 

No air dam???
That's like an F-body no-no in my opinion....i lost mine one time and the temp. jumped 40 in just a matter of 2 or 3 mins....You won't catch this white boy without one...

 

That's right Mark & firerider76, the air dam is pretty much a ground rule for f-bodies although I don't have any experience with the intercooler deal CRZYTRN is runnin'.

I agree with rezzin on the performance decrease with a clogged cat but maybe the supercharger is masking it somewhat.

You are all right about the white smoke if coolant is getting into the cylinder BUT sometimes it goes the other way when combustion gases are the greater pressure. Checking for the presence of these gases in the coolant was the only way I found a small head crack between the int. and exh. valves on one turbocharged car.

 

Another solution, albeit very expensive, is to upgrade to a three core radiator. I have to do this with my 383 im dropping in, the stock two core just wont cut the heat. Im assuming that your supercharger acts in the same way the extra cubes in my engine dont at generating heat.

 

Its not the heads or a head tasket leak. Just rebuilt the entire block about 15,000 miles ago. I seriously doubt it's either of those. I hate the fact that I cant use the air dam but the supercharger doesnt let you. I'll run the coolant test and see what happens

 

Why don't you just trade me your supercharger for my air dam, and your problem is solved. :hail:

 

CRZYTRN are you sayin' you had it checked? If so that great news and you can move on to the less disastrous causes.

Sorry, made my post before reading the last line but if that's not it maybe you do need a bigger radiator.

 

LOL Well I ordered some cats the other day because I dont think they are functioning at all. My HC rating was way way way out of range for passing an e-test. I hope its just that my radiator isnt big enough, but we'll see within about a week.

 

They won't 'let you' keep your air dam. Why not? Does it force the hot radiator air through the intercooler or something?
Maybe get anohter fan, one to push one to pull. Maybe lower to 25% antifreeze/75 water and a bottle of wetter water.
That along with a 3 core radiator or aluminum radiator is above isn't enough.

If all else fails there is a coolant system that I've heard on here that supposedly works great that uses different kind of coolant and pump.
Good Luck,

Chris