Not totally sure if this is the right spot to post but I have been stumped on a problem and was wondering if any of you had any input. I have an 06 SS 2.4 with a Hahn kit installed. I have driven the car maybe 400miles since installing the kit and I have run into someone overheating issues. At idle or low speeds the temp will spike to around 240. I originally thought I had a blown head gasket and I pulled the head off and saw nothing wrong. I replaced the head gasket after having the head sent out and tested. No problems there. but I still have the same problem. I am not sure if it's the water pump either. The levals are fine and I don't see any leaks. I spoke to a few echanics and they all tried to tell me it was my "junk turbo kit" causing the problems but as I said it's not overheating when the turbo is in use. simply turning the ignition and letting it run will get it to overheat eventually, but driving it with the boost dosn't make any difference. Other than my kit everything is stock but again I just can't see where theres a correlation with the turbo and the heat. Has anyone encountered anything similar? Any thoughts? I have had the car garaged since November so the issue is kinda starting to **** me off and I would love a resolution. Oh and before anyonce asks the car was never driven hard. Well I did get a kill out of a GT mustang and a camaro...think it was a 6cyl though lol. Z4's hate me too...but anyways any input would be very appreciated.

 

um, simple question. are your fans working?

 

as area said, either the fans arent working, or your thermostat is screwed up somehow.

 

Fans are working properly and I had the thermostat checked. I also replaced it anyways just to make certain. Sorry I kinda forgot to mention those but they were the first thing that I checked before assuming it was the head gasket.

 

do the fans turn on when the car reaches 220*? or not until it reaches 240*?

 

yea, im interested in this issue. i was havin the same problem after i turboed my car

 

also the garrett kit? Im wondering of something in their tune maybe screwed the programming so the fans dont turn on as early as they should.

 

no, it was a custom kit. i hit boost fine except for my exhaust leak i had at the turbo/manifold meeting place. but i still would over heat. it would run fine then the next thing i know i was runnin hot

 

No fans are kicking in when they should. Temp just keeps crawling up though. I can't go to a drive thru idle speeds or any quick acceleration then idle just makes the temp spike like crazy. I half wondered if it was a problem with the computer. It's not throwing any codes. But def not the fans and I don't think it's my water pump either...not leak. This is totally stumping me.

 

flush the coolant and add some water wetter. I had the same issue and i did this and it was gone.

 

maybe coolant line from the turbo just has soo much hot coolant in it, it raises the temp at idle. The water pump would be spinning slowest at idle, so water wouldnt be flowing as much through the system, meaning the hot coolant that is just leaving the turbo might be sitting near the temp sensor pooling up instead of flowing around like it would when driving.

This is just a guess tho. At any rate tho, water wetter couldnt hurt, like celica said

 

For instance I ran the car a little earlier. Just turned it on and let it run. The temp starts to go up the fans kick it and the heat just keeps climbing to 248 and then in a matter or 5sec it drops back down to 205. I haven't touched the water pump yet....not really sure how a problem with the pump could get that effect. I'll try the water wetter but seems like there are other problems here. It just pisses me off everytime I talk to someone the automaticaly blame my "junk turbo kit". I have tried to get ahold of Hahn a few times but they always you to leave a message and they will call you back.....Left a few so far.

Oh and I did flush the coolant and replaced it when I replaced the head gasket.

 

i mean.. mine gets hot after a while.. but it sinks right down.. but NEVER gets that hot..

have you bought a new thermostat?

 

start the car cold. undo the coolant reservoir cap. get rid of the air in the system.

 

Theres no air in the coolant. I tried that before I replaced the headgasket and did it again after changing it. try it again last time I let it run for about an hour and a half....should I just fill the gas tank and let it idle for a day or so? that and the whole engine gets hotter than a mother just letting it idle.

 

if your coolant temps are going from 248 to 205 in 5 seconds, then its either an air pocket, or your temp. sensor is damaged.

 

def not a sensor....it get HOT! I took the resevor cap off and lost about a gallon on the ground. I refilled it and lost about another gallon....all in all I let it run for about 3hrs without the cap on. I also added the water wetter but its still runnng hot.

 

well, if its going from near 250 to 205 in 5 seconds, then it has to be an air pocket or a sensor issue. The coolant in the system cannot cool off by 45* in a few seconds...

 

what size turbo?

i ran into this problem ALOT with my old set up. then i switched turbo's and it was fine.

the turbo was getting so hot, that it actually was heating up the motor it self.

also you could try to wire your fans to a switch. and turn them on your self

 

I havent been around my car for quite a while until today. The turbo def is getting very hot. I ran it today for about 3hours and still no change. I have had all the sensors checked and no problem there. I have noticed that the coolant line coming from the turbo feeding into the line between the engine and the firewall is WAY hot. I guessing from the turbo. Im heading to the store today to get some heat wrap for those 2 lines and see if that makes any difference. Oh, and someone asked wich turbo I had on it. I have a T3. Shouldnt be too agressive should it? I did notice that im running around 10lbs of boost but the engine overheats without the turbo ever spooling up. I never checked the bearings on the turbo either but it runs very quiet...had one blow before on an old truck and it sounded like a rock grinder.

Turbo is def getting way too hot. But why would it get that hot without spooling up.

 

could it be an exhaust issue since the turbo is getting hot without spooling? Maybe a clogged cat not letting the heat escape fast enough. just guesses.

 

45 degree drop in 5 seconds is not going to happen.. w/o air or sensor issues (or maybe flow issues)

 

Well, I havent been on in a while but im still having the same issue. I can't use the heat at all or the temp will just go straight up. Now I am also having a knocking sound coming from my boost fueler. You cant feel the surge in the lines like there is a clog somewhere or something but I have no idea where to start looking. I have no boost at all anymore either. I can't get my car over 4000RPM's because as soon as the turbo should kick in the engine bogs down. The turbo is still spooling though but theres no blowoff. It kinda groans and pushes the air back out through the intake. Could I have a bad seal on the turbo somewhere? Any input would be great.