No only the one for the pcm will, did you clean you egr valve when you did a tune up? You could have plugged up coolant passeges by the sensor.

 

No I'm not quiet sure where the egr is on my zj. So no I havnt cleaned it. Is there a way to clean the cts? Or should I just buy a new one for 8$

 

so i still havnt figured out the problem anyone have any ideas? like i said the thermostat is new and it does open. its a 95 i6 4.0

heres where the needle stays after 30 mins of driving in about 75deg weather

 

Anyone?? Please help

 

Yes I think your tsat is stuck in the open position I had one that was stuck open and read cold like that.

 

Well I was looking into it more and the gauge might just be off. I opened the throttle body plate and it was pretty wet in there. I think I have a leaky injector or it could be the coolant temp sensor, the only reason i dont think it is is because i dont have a check engine light or code. but i was reading and it said it doesnt always throw a code

 

I ran lucas injector cleaner and I gained 3 mpg back but its still running rich.