Did it over heat when u took out the ECU???

 

It runs fine with the p06 plugged up. When I plugged up the p28, the check engine light came on, come to find out it was the cel code 21 vtec spool solenoid valve. I drove for about 20 minutes, and when I came to park, I noticed my heat meter was on the H. So I have no clue why the ecu would cause my car to overheat.

 

I have a P28 and i did a D16Z6 swap into my 92 LX. I never experienced the problems u are having. I am going to put my money on that being a bad ECU.

 

Iluvjae, did you use your LX wiring harness for the swap. I have the DX wiring harness, I was thinking that may have something to do with it.

 

Yea i used the stock LX wiring harness. I still dont see how the wiring harness could cause your over heating. If its a bad ECU then you could have problems. I never hooked my vtec up and my car ran strong and never over heated. But if you can put the old ECU in and it works fine then im putting my money on the ECU. Also when you install the ECU are you letting the car sit at a steady idle for about 10-15 minutes. You have to make sure you let everything recalibrate in a way/

 

check if your radiator fan is turning on with either ecu. strange enough your car should run a little rich when the CEL is on and run cooler due to the rich mixture. if your car is overheating with the fan coming on then i'd check to make sure your cooling system is pressuring properly and your thermostat is opening.

 

I dont think its the ecu. After driving home from work this evening, I noticed my heat meter about 3/4 the way up and rising(w/ the p06). So I will check the radiator/fan/thermostat/coolants/any leaks/water pump/etc tomorrow. Thanks to everyone that had input.