Engine/Transmission (1994 - 1998) Wait to start light flashing

[WPeschel]

Well lately I noticed sometimes when I crank up my truck the wait to start light will flash even after driving for 45 min it will stay on... The only way to get it off is too turn the truck off and then restart it then it will not come on... Whats up with this???

 

[jtwcummins]

When the wait-to-start flashes it is the IAT is out of range in most cases. Might try cleaning the sensor and clean and dielectric grease on connector

 

[WPeschel]

When the wait-to-start flashes it is the IAT is out of range in most cases. Might try cleaning the sensor and clean and dielectric grease on connector

This is my first 12valve. . What is the IAT?? Where is it located?? Thanks Wesley

 

[jtwcummins]

The Intake Air Temp. Located on intake manifold toward firewall

 

[Skydiver]

My wait to start light did something simular to that when I tapped the wrong orange and black wire to install my mystery switch. Just thinking out loud.

 

[EKlem]

There is an open circuit in the intake air temperature circuit. It usually is not the sensor itself but it is a corroded connection. If you look on the intake manifold(drivers side of engine where intake horn comes into), you can find the sensor behind the intake horn. It is the only thing that is tapped in back there with an electrical wire coming out. About 6" from the sensor there is a connector that tends to be corroded. If you just pull it apart and scrape it clean, that usually fixes the problem.

You are not hurting anything by having your truck be this way. It just means that your grids will run for the maximum allowable time everytime. Not to mention the flashing light is annoying.