[reggiecab2000]

Hey guys
i just swapped out my cps last night and when i got in my truck this morning my problems did not go away...
constant misfiring, hesitating all the way up to 60mph then almost like kicking back intermittently on the highway... i had all these problems about 6 months back and had my DTC code thrown for my cps, swapped it out and bam!
truck was perfect again
in the last few weeks it has slowly started doing this again and threw the DTC again for my cps,
well i swapped it out and this time it didnt fix it.... any help???

 

[tbplus10]

Only a guess here but have you ever read out the wiring harness for wire integrity?
Might be a good place to start, once you know for sure theres no wire or connector issues you can chase it farther upstream if you have to.

 

[MrShorty]

The thing you have to remember with any DTC is that codes point to problems in circuits, of which the sensor itself is only one part. At this point, I would assume the sensor is ok, and get a wiring diagram and test the rest of the circuit (and any other components like the ICM if they are part of the circuit) to find the fault.

If it helps, a good manual (professional edition) will have "pinpoint tests" for each DTC that will walk you through the diagnostic tree. I've often found these manuals available in the reference section of public libraries. Some libraries even have subscriptions online manuals for their residents to use. It might be worth the effort to get a hold of the pinpoint test for the specific DTC you are getting and walk through the test procedure.

 

[reggiecab2000]

i disconnected my battery for a while then reconnected it... no difference
also put a voltimeter on the connector and its showing voltage and resistance so the connector is good...
this is driving me crazy,
also another note if it helps this terrible hesitating noise and shaking only happens in the mornings, no other time of day, even when im at work from 8 a.m.-6 p.m. and my truck has sat there the whole time it does not do it when i leave work only whenever i use my truck in the mornings like going to work or school...
something to do with the outside temperature being cooler? i dont know