Based on your readings, the TW sensor is definitely bad. In addition, the lack of resistance when the TW sensor is cold fits very well with a cold start problem. In this regard, the sensor resistance of a good sensor would be at its highest when cold. Therefore, I think you have an excellent chance that replacing the TW sensor will solve your cold start problem, as well as lead to better engine performance and gas mileage.

 

ok that sounds good...im gonna pick the part up tommorrow and put it in and i will let you know if it works...cross your fingers haha

 

the coolant temp sensor was the problem,it starts up on first try now....thanks for all your help

 

That's great! I'll have to remember that a bad TW sensor may not throw a CEL code. By the way, what does a new TW sensor cost?

 

thanks for your help

 

the car started up fine this morning then when i was leaving work it took 2 times to start up but it smells like its running rich

 

Did you happen to take cold and hot resistance measurements for the new TW sensor and to compare the measurements with those of the old sensor?

By the way, it is normal for the engine to run rich until it has fully warmed up.

 

i dont know if my brother did before i put the sensor in or not, i will check with him tommorrow...he said it smells like it runs rich even when its warm

 

Yeah, it would be comforting to know that the new TW sensor has proper resistance measurements when cold versus hot.

Is the engine otherwise running fine? Has the CEL come ON? Try to retrieve CEL codes from ECU (see link in my signature).

In terms of running rich, this could be caused by a bad O2 sensor (CEL?), an exhaust leak ( e.g., crack in the exhaust manifold), or the ignition timing being off (check with timing gun).

 

my brother drives the car and said when he comes to a stop the check engine light will come on then when he takes off it goes out..But on start up it comes on regular then goes out.I just did a fuel injection cleaning the day before we got the new part, do you think that would have anything to do with it running rich?