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1997 5.9 V8 2500 out of time?

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  #1  
Old 03-20-2018, 07:04 PM
alecbov
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Default 1997 5.9 V8 2500 out of time?

Hello, I am looking to see if you guys have any suggestions on how to fix my truck. It seems to be out of time or something. About a year ago i had to pull the engine to replace the torque converter because it broke the bolts holding the torque converter to the transmission. Once i had replaced them, i hooked everything back up and started it up. It starts right up, but is surging massively. The rpms are going from 500 to 1000 in a second and jumping back and forth. Its backfiring and just isn't healthy. I had replaced the crankshaft position sensor and i think i replaced the camshaft position sensor. I made sure all the plug wires went to the right plugs. there don't seem to be any wiring that i missed putting back together. I'm at a loss. Something could possibly have been bumped or pushed when i put the engine back in because all i really did was unbolt it and lift it less than a foot. it's throwing some codes, but it had been doing that before anyway. p0505 p0753 p0713 p1391 p1763. Any help would be greatly appreciated
 
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Old 03-20-2018, 07:07 PM
alecbov
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Those codes were already stored. It wasn't showing any current codes
 
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Old 03-20-2018, 07:24 PM
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Sounds like a serious vacuum leak to me......
 
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Old 03-20-2018, 07:34 PM
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P0505: IAC Malfunction
The IAC (Idle Air Control) valve controls the idle speed of the engine. At idle the throttle plate is closed, of course. The IAC is computer controlled and allows only a certain amount of air around the throttle plate. This metered air controls the idle speed. The IAC has a "plunger" or "shutter" that moves to open or close the bypass air passageway.

I suggest that you remove and clean your throttle body and possibly replace the IAC (Idle Air Control)

 
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Old 03-20-2018, 08:10 PM
alecbov
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would that have anything to do with backfiring?
 
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Old 03-21-2018, 07:57 AM
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Maybe. Start fixing the obvious first, and see what remains.
 
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Old 03-21-2018, 08:31 AM
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Check the plug wires first maybe somehow they got changed. I did that when I replaced my plug wires and it sounded like a 50cal
 
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Old 03-21-2018, 10:23 AM
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P1391 Intermittent Loss of CMP or CKP
Might want to take note of the code #'s and then clear them and see if any come back(engine related). You replaced both of these so it shouldn't come back unless there is an issue with the wiring(or the sensors themselves).
 
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