99 sunfire gt ld9 its a dirt track race car.When i start it it smoke a little black but once it warms up it goes away it has a aftermarket temp gauge in it so the sensor isn't plugged in would that do it

Yep I bet it will because it has to know coolant temp for the ecm to switch to closed loop. So your running on ve tables only.

SLO CAV (autocrossing dude) wrote:Yep I bet it will because it has to know coolant temp for the ecm to switch to closed loop. So your running on ve tables only.

And it thinks the car is like -314*F so its just going to be dumping fuel all the tine.


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Leafy wrote:

SLO CAV (autocrossing dude) wrote:Yep I bet it will because it has to know coolant temp for the ecm to switch to closed loop. So your running on ve tables only.

And it thinks the car is like -314*F so its just going to be dumping fuel all the tine.

^^^ this!,

so once the motor warms up it is fine or is it still over fueling itself