2nd Gen Non-Engine/Transmission Wait to start light

[MBanning]

I have a bit of a problem that I need help with. My 98 12 valve truck's wait to start light is not lighting up even if I put the AIT sensor in a cup of ice cubes. The grid heaters work but the light will not turn on. I have tested the AIT sensor using the info in the Dodge service manual and it seems to work fine. The wait to start light also doesn't come on when the key is first turned like the brake, check engine, ect...

Now for the tricky part! While driving and making any boost the wait to start light will come on. The light stays lit until I stop to turn, stop sign,ect... then comes right back on.

I have just completed a 5 speed conversion on the truck and I also did away with the fuel shut off solenoid. I am hoping the wiring involved in this wouldn't cause my problem. My concern is that the PCM isn't receiving some signal that it should be.

I do not think the grid heaters are turning on with the light while driving. They would have melted by now

Thanks for your time and any help would be greatly appreciated, MBanning

Edit to add symptoms are same with Air intake temp sensor unpluged.

 

[Cosmo]

Why would you get rid of the shut off solenoid?

You definitely have a wiring issue.

 

[KRStone]

I do not think the grid heaters are turning on with the light while driving. They would have melted by now

Your voltmeter should answer that question, see if it's drawing a large current at the time the indicator light comes on.

 

[MBanning]

Why would you get rid of the shut off solenoid?



You definitely have a wiring issue.

I wanted to simplify things and make the pump easier to access. Any idea what the issue may be or is this a guess? Thanks, MBanning

 

[Cosmo]

My guess is that some wires got crossed and the wait to start light is being triggered by some other circuit.

Are you going to hook the solenoid back up once you figure out your problem? Seems to be somewhat of a safety issue if you have a clutch issue and can't get it out of gear.

 

[MBanning]

My guess is that some wires got crossed and the wait to start light is being triggered by some other circuit.



Are you going to hook the solenoid back up once you figure out your problem? Seems to be somewhat of a safety issue if you have a clutch issue and can't get it out of gear.

That is what I'm afraid of but I'm not sure where to start.

I am not going to use the solenoid. I have a shut off cable installed in the dash.

 

[Flinty]

Check the engine speed sensor at the front of the engine on the harmonic balancer.

 

[MBanning]

Been at it for a couple hours but I got it! When I got rid of the auto I removed all of the associated wiring all the way back to the PCM. When I removed the no longer needed wires from the connector I managed to bend pin 20 over in to the wrong spot. Pin 20 controls, you guessed it, the wait to start light. I straightened out my mess and took it for a spin. Problem solved. Thanks again, MBanning