need help/ running wa way 2 rich

[kingdaniel04]

the car is a 91 awd drice dsm and is running way too rich? idle is fine but i dont know how to adjust the air fuel ratio if i can or what is the problem, can someone hepl?

 

[johnk]

Check your coolant temp sensor the one for the ECU not the one for the cluster gauge. Otherwise it may be your throttle posistion sensor. O2 sensor maybe too. I'd check them in that order.

 

[kingdaniel04]

we played with the throttle position sensor and the 02 sensor is brand new? i didnt know that the coolent tem sensor can have an a/f ratio effect? but where is that sensor?

 

[adamgt1]

we played with the throttle position sensor and the 02 sensor is brand new? i didnt know that the coolent tem sensor can have an a/f ratio effect? but where is that sensor?

The a/f will have an affect on your coolant temp because if it thinks that the engine is cold it will richen up your ratio. If your engine is hot, the a/f ratio should drop down.
Correct me if I am wrong, but the coolant temp sensor is attached to the thermostat housing. If you have a data logger you can get the readings from there.

 

[johnk]

Coolant temp sensor is the most likely one of the 3 check it or replace it. I think they go for 20-30 bucks.