on a 92 ctd the wait to start light will sometimes flash at highway speeds, esp. under load. If I ease up on the throttle, the light goes out and may stay out. any suggestions

boneyards

 

According to Alldata,

Does it only happen on hot days? How is your air intake housing? Any cracks or air leaks inside the engine compartment? BTW - 59*F (15*C) is the low end, I am not sure what the max value is. Perhaps someone can chime in...

I am not an expert - haven't seen this error, but it can't hurt to check.

 

I have only had the truck for a few months now, so I can't speak about the colder temp. The air intake seems fine, I have a new k&n filter on. It gets warm here (Ontario), but not excessively so. The dealer here is unable to give me any advice. I may have a problem with the vacuum, (cruise control does not work), but other vacuum operated items do.

I will try to see if a code is set.

Thanks

 

Probably a bad wire or a bad sensor. It's supposed to flash if you unplug the sensor.

 

i can second what wanna has to say. its the sensor on the top of the motor, drivers side, closest to the intake horn. if you unplug it the light will flash. start there and check the connection.

 

Thanks, although the engine light was not on a stored code suggested air intake temp sensor is malfunctioning. I believe this is the one mentioned in the posts. Thnaks for the help

boneyards