24 replies to this topic

[Beaubear]

First off sorry if I posted in wrong section and if this was already done.

Ok so about 2 months ago, I went for a nice little drive. Halfway into it, it started to rain. I noticed steam coming through the vents. I thought to myself, water and heat make steam. So it's nothing to worry about. About 5 minutes later I'm on the side of the road with an empty coolant tank. I refilled it up with water just to get home and it overheated again in less then 1 minute. So I assumed I was having a thermostat problem. Bummed a ride down to lethal performance picked up a new 170 degree and thought that solve the issue.

A month after that, took a cruise down us1. New thermostat, full tank of coolant, and cool weather. As I was pulling into my destination, I noticed the temp gauge pegged out to H and ac was blowing hot air on its own. Pop the hood and once again had an empty coolant tank. WTF? This time I thought to myself, maybe I have a bad tank. So the next day I ordered a new moroso tank. It came in two weeks ago and put a fresh batch of coolant. And just today for shits and giggles I checked the level before I went for a drive and it was damn near empty. I'm running out of ideas and most importantly money. Help please

[GT500FLYBOY]

Make sure your secondary supercharger intake cooling system is working properly.  It has an electric pump that should be pumping coolant all the time.  If it isn't pumping, then the intake can get very hot with the pressurized air, overheating the engine, and making the engine coolant boilover.  To check your secondary system pump - just take the cap off when it's cool and check for flow.  It should never stop.  If it does - check all the connections to the pump or replace.  It sits in front of the a/c condensor and behind the bumper.  I had to replace my pump due to intermittant failure with similar symptoms.

[Beaubear]

If that is the problem I will be happy. I did kinda bang the pump up a little bit while putting on the new heat exchanger. I will check it in the morning. Any recommendations on a new pump if that's the case. Another oem or an aftermarket? Thanks

[GT500FLYBOY]

Oem is fine. Warranty item.

[tesgt350]

Did you try bleeding the System?

[Beaubear]

No I haven't tried to bleed the system. i did a complete flush with the heat exchanger. How would I go about bleeding?

[Secondo]

Where is the steam coming from exactly and where is the coolant going? Is there white smoke coming from the tailpipes? Hope it's not a head gasket.

[Beaubear]

That's the thing I don't know. The coolant isn't leaking its disappearing. Maybe it evaporates cause I leave it parked in one spot and I see no leakage. It only steamed the first time so I wanna rule out head gasket.

[GT500FLYBOY]

You mentioned the heat exchanger - I imagine you upgraded to the double-wide dual-fan unit from C&R Racing?  Did you ugrade the radiator as well?

[Beaubear]

No I did not upgrade the radiator. And I only upgraded to the afco w/out fans since I'm still on a stock supercharger.

[GT500FLYBOY]

Ok - I'll still recommend you check that pump. Keep checking it everytime you drive. Also be sure your radiator fan is running - both low and high speed. If it's not running after warmup, you could check connections or try swapping relays. I had to replace the fan altogether at one point, too. Connector had overheated and melted.

[Beaubear]

Yea the fan is good. I had to change when it comes on after doing the new thermostat. Hopefully I can get around to checking that pump tomorrow. I appreciate all the help and suggestion guys.

[Secondo]

Ok, you better take the spark plugs out and check them just to make sure.

[Beaubear]

Thanks for all the help. Found out it was just a bad relay

[GT500FLYBOY]

Have had that as well.  For the pump or the fan?

[Beaubear]

It was the pump relay. So I did that 20 amp fuse with the twist and bends and I got some flow from my tank. Checked the spark plugs and they were fine but I threw in some new brisk racing plugs while I was under there. Fan works. Kicks on when its suppose to.

[Secondo]

Whew! Nice happy ending to this story.

[Beaubear]

Back at it again. That relay I replaced solved the flow of the intercooler pump to actually start pumping again. Added all new fluids and still the IC reservoir tank is disappearing with no signs of leaking. It's really getting to me. I used a pressure test and it held. Maybe I need to replace the pump also since I already did the relay? HELP PLEASE

[GT500FLYBOY]

You must a have a leak.  Maybe try doing the black lite test.  Share your mods again...

[0201212]

Check the two hoses that go back into the fire wall behind the supercharger. They can move and rub up against the egr piping and get a small hole in them.