Truck starts right up when it's cool but refuses to start when the engine is warm. When running and it is warm, the truck idles very high. I've decided this is a cooling issue since my temp gauge is no longer working and the engine is running at such a high RPM. I've changed the coolant, changed the thermostat, and now I am getting the code that is indicating the coolant temperature sensor may be bad. That leads me to my question...
I believe the ECT sensor on my truck is in the side of the #7 cylinder inside the valley. Is this correct? It seems everyone believes it is in different places. Second, if correct, is there any way of replacing this sensor without removing the intake?
Are you a Ford F150 fan? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Ford F150 Fans to meet online. Once you join you'll be able to post messages, upload pictures of your truck, and have a great time with other Ford F150 fans. Whether your an old timer or just bought your F150 you'll find that F150Forum.com is a great community to join. Best of all it's totally free!
Not knowing what engine you have, I would think the sensor would be up front near the t-stat. Typically we want to know the temperature of the water leaving the engine. You asked for ECT for the computor, you are probably correct, others will verify. My retarded brain was thinking of the sender for the temp gauge.
Last edited by Good old Bill; 10-17-2008 at 05:09 PM.
Reason: My Boo Boo
Too bad the good guys aren't on line yet. Are you sure the engine is comming up to temp, is the top hose hot? It probably is and that is why you want to change the ECT. Sorry for not knowing its exact location and if it is by #7, if it can be changed easily. Good luck, was try to help.
I appreciate the help. The engine is coming up to temp, it just is running as if the computer believes it is cold all the time, hence why it is staying reved up so much. (at least that's why I think it is at such a high RPM).
I can see the sensor, its to the right of the alternator around the #7 cylinder. It's impossible to get to unless you have the hands of a 2 year old.