no power?????

[monsterstoker]

can start rev fine but when in gear i have like no power and can barely get to 45mph need help and service engine light flashes

[LakiPolitis]

Does the truck stumble and die if you ride it for a while? Or are you just lacking power through every gear. What transmission do you have?

[monsterstoker]

Yes and automatic 2000 7.3

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[LakiPolitis]

At the risk of sounding like a stuck record. The same thing was happening to me. It was my oil cooler being toasted. You can pull it out and visually inspect it, or you can see if there's oil in your coolant, you can also see if there's oil/coolant leaking above your oil filter.

It could also be your IDM or your ICP sensor. Have you had a mechanic buzz test or contribution test your cylinders/injectors?

[timmyboy76]

remove the steering column shell and inspectthe wires coming from the shifter. They shafe over time and can cause all sorts of crap.