I went to start my truck the other day and when I turned on the key the wait to start light didn't come on and I didn't see any draw down on the volt meter from the grid heaters either. I waited the normal amount of time it takes the grid heaters to cycle and then tried to start it. It turned over real easy but it wouldn't even think of starting, it was about 15 degrees at the time. Turned the key on and off a couple of times and tried it after having let it sit for a while and still no wait to start light. It got up to 35 degrees today so after work I tried it again and even though the WTS light didn't come and the grid heaters didn't cycle it did start after it cranked a little.
Does anybody know if this is caused by a bad IAT sensor or is the ECM bad? I seem to remember the WTS start light always coming on even if it only was for a second or two even when it was hot out.
Thanks !
Chris
Does anybody know if this is caused by a bad IAT sensor or is the ECM bad? I seem to remember the WTS start light always coming on even if it only was for a second or two even when it was hot out.
Thanks !
Chris