Ok I am not new to diesel trucks but this is my first dodge and my first cummins. Ok as all cummins engines it has the wts (wait to start) and check engine light. On this truck the check engine light usually stays on longer than the wts light but a second or two later the check engine light will turn off, my question is should I wait for both lights to be out before I crank the truck. On the two diesels I have had before the check engine light would stay on until the truck was started but with the cummins it turns off. Thanks for the help.

 

Its really up to you. I know guys that just get in and start cranking, I would just wait until the wts light goes out IMO.

 

Its ok to crank with the check engine light on then right?

 

I don't even wait for wts light to go off in the warm months jump in crank it up. Now during the colder months I'll wait for the light to go out but just the WTS light. Only time I worry about the CEL is if it stays on while running. My suburban does the same thing with the CEL it just the ECM going thru its cycle. When its done it goes out.
If my truck hasn't been run for a few days. I will let the lift pump cycle before I'll crank it and let it warm up a bit before I take off. make sure the fuel is pumped up to the IP. But thats me , and my truck others might tell you different.

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yep.

 

Yes. If it goes out after you start it you are fine.

 

I like to wait. just personal but its really up to you on weather you want to talk the 2 seconds to wait

 

I just wait for the wts light goes out. When its warm out it doesn't really stay on for more than a secound or two.

 

in the winter i wait for it to go out in the summer i normally just get in and fire it up!!! damn man we have identically colored trucks and years.... nice truck where you at in indiana????

 

I live where it cold in the morning, but no it doesnt hurt to crank with the check engine light on. Mine does the same thing... no harm

 

I am In northern Jay county.