90 Sunbird 2.0 - Code 15

[switzee]

I have a '90 Sunbird 2.0 4 cyl that keeps tripping the check engine light after about running for two minutes, or so.

The fan motors kick on at the same time as the light.

I pulled a "code 15" from the computer, and changed both collent temp sensors, (one in the head, the other in the thermostat housing) along with the thermostat.

What am I missing, here?

Thanks much,

S.

 

[irg7620]

have you taken that code to autozone to see what all problems cause that code? they can make a printout of all the things that can cause a code to be set. i'll have to look at my repair manual to see if i can post some things about that.