Last April I had an SOS supercharger installed with an upgraded heat exchanger. It ws the stock SOS unit with the 6 lb pulley, with no gauges. I have felt, more than observed that the car seemed to be running hot. this past week, I took the car to Evans Tuning, and had a 10lb pulley installed, an AEM series 1 ECU (originally was to be a series 2, but thats a different story). I also had a pair of serial gauges installed and am now monitoring engine temp. On the way backhome, the car over heated after some agressive driving.

temps run anywhere from 185 deg to 204 under normal highway cruise. With the high temps going up when the car is under load (hill climbing). My question is this. Has anyone else had this sort of situation, and what do you do to correct it?

I know some of the obvious things to check like the radiator cap, thermostat, and fan switch, but are there other possibilities?

 

190-210 are standard coolent temp. I also seen anywhere from 190-210 on my serial gauge. It's in the upper 190"s 90% of the time but if your boosting or climbing a long hill or stuck in traffic with the ac on it will start going in to 200-210. Which is normal.

 

Did you recalibrate aem water temp table? Default it reads higher then actual.

 

I pretty much know enough of the AEM ECU to really screw it up. Jeff Evans of Evans Tuning calibrated it and programed the imobilizer light to come on if it went over 4 bars. (the series one unit doesn't drive the stock temp gauge). that light came on, and the gauge did a momentary spike to above 215 deg. I pulled over immediately, cooled the car down and then pulled into a restaurant, ate a leisurely dinner. After that 4 hours of interstate to home with no problems. I haven't been able to force it into anything over 205 deg since. So I guess the car was working an air bubble out of the cooling system. It seems the most logical, since I had the manifold off last April. Still, it seems like a long time for an air bubble to remain in a system ---------------- Oh s*it, I just thought of something. When this happened, I didn't check to see if the heater worked! I never drive in the winter and rarely even have the heater on. I wonder if there was air being held in the cooling loop by the heater core? Hmmmm - maybe I need to "burp" my cooling system aka Billmans method.

 

I had my ems done by Evans Tuning and the temperature calibration tables were perfect.