Archived TPS and crankshaft sensor

[PGould]

I had TPS and crankshaft sensor unit replaced. When I got the truck back my boost dropped from 30 pounds to 22 and it seems like my exaust temp jumps up much quicker. The truck even sounds different when it cranks over. Has anyone run across this or have any suggestions?

 

[Joe G.]

Tell us what kind of truck you have. Especially the year.

 

[PGould]

2000- 3500, 4x4, 6spd, 410, BD race pro and BD exaust brake

 

[MCummings]

Make sure your box is still plugged in.



To replace the CPS, the starter has to be removed.



Make sure your Wastegate has not been returned to factory.





It might be a loose intercooler boot, but 22Lbs is so close to factory it makes me think the MAP sensor is not running to your "box" anymore, and the ECM is seeing actual boost...



Merrick

 

[PGould]

Merrick,

Thanks, the lower intercooler boot had come off. I had to take a good close to see it! I'm back to 34lbs. of boost. The hose had to have come off when the shop test drove the truck because the minute I drove it, it ran like a dog and I imediatley returned to the shop. They checked it out and said they couldn't find anything. Go figure!! Thanks again Pat