F150 with new:

Head gasket Valves Timing kit Cht sensor

Code p1299 is showing as permanent, and the truck will not start. If hit with ether is starts right away and runs fine. No over heat. No other codes. Has been driven for hours on highway and city. No issues. After driving, shut off and immediately tried to restart, same problem. Cranks, no start. Shot some ether, started right up and ran fine again. Still no other codes. What am I missing? Any help is appreciated.

  • ThurmanPmurman@alien.topBEnglish
    1·
    10 months ago

    I would not overlook the code shown. Check the wiring to the sensor and if it appears ok, maybe consider that the new sensor was bad out of the box. I remember on one truck I had, I was having similar issues with starting, but once started it was fine. The entire time it only had a temp sensor code, but I didn’t think that was the problem, chased 100 other things to no avail, then did change the temp sensor and was fixed just that easy.