Code 11 and a on and off coolant light

Turbo Targa

New Member
Sep 1, 2005
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Ok I am determined to get to the bottom of my moody Supra.

The light was coming on only when the engine RPM was almost 0. The car is doing a high then low idle untill warm and I noticed that the light would flash when it almost died. I checked the codes and its an 11. Is this simple enough to assume that my car's rpm is getting so low that its triggering its own check engine light?

I am going to try cleaning the TPS sensor tomorow to help with the idle. I checked the timing as best as I could with the bumpy idle and I got it to 10 degrees with the jumper and upwards of 12 without it.

EDIT: The coolant light is coming on and off at times, I noticed that it was only after giving the motor some revs. Its not staying on and the temperature is not hot at all. The gauge is reading and I have plenty of water in the radiator. ( I am using water untill I am ready to be on the road with it. Then I will do a flush and go to a good 50/50 solution.

Am I getting somewhere?
 

americanjebus

Mr. Evergreen
Mar 30, 2005
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wa.
pull the sensor off of hte overflow and put back on could be odd connection, make sure you overflow is at the right level.

and it sounds like you have idle surge, find you ISC and pull off the wire see if it changes the way you idle. if it smooths out then its your ISC or clean it