Just Replaced The VP44, Now The Engine Stalls
#1
Registered User
Thread Starter
Just Replaced The VP44, Now The Engine Stalls
Well, it kinda stalls going from park to idle. It did die a couple of times until I adjusted the APPS to the idle value of .558 (per sticker on APPS). It was .508 and that seems to have made some difference. When you shift (automatic) the engine takes 1/4 second to realize it needs to idle up to meet the demand of the TC drag.
I've double checked vacuum lines and they seem okay. Anything else I should be doing or look for?
Any and all advice appreciated.
I've double checked vacuum lines and they seem okay. Anything else I should be doing or look for?
Any and all advice appreciated.
#3
Registered User
Thread Starter
#4
Registered User
Thread Starter
Bump!!!
Anyone have a clue? I bumped this for the weekend guys.
I've double checked the APPS.
It's almost as if the TC is causing the problem? How do I check the line pressure?
Anyone have a clue? I bumped this for the weekend guys.
I've double checked the APPS.
It's almost as if the TC is causing the problem? How do I check the line pressure?
#5
Administrator / Scooter Bum
Have you tried resetting the APPS again after adjusting the voltage?
Pull the battery cables, wait an hour, reattach the cables, turn the key on, then push the accelerator pedal slowly all the way to the floor, then let it up slowly?
Pull the battery cables, wait an hour, reattach the cables, turn the key on, then push the accelerator pedal slowly all the way to the floor, then let it up slowly?
#6
Registered User
Thread Starter
I think that was it! I tried putting it in gear a couple of times and it is acting better!
Thanks ED! You da man!
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#8
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#9
Registered User
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Well, resetting and calibrating the APPS didn't do it. It still stalls first thing in the morning when I put it into gear, but after it seems to act okay.
On a "99" 24 Value, do you need to cycle the throttle 3 times when recalibrtating the APPS or just once??
Any other ideas?
On a "99" 24 Value, do you need to cycle the throttle 3 times when recalibrtating the APPS or just once??
Any other ideas?
#11
Cummins Guru
See list of possible causes shown in specific order below. DRIVEABILITY: Check for possible driveability issue that may cause or contribute to engine stall out. Condition may be caused by crankshaft position sensor (CPS) signal drop out. COOLER FLOW: Check trans cooler system flow rate. Trans should be fully warmed up. COOLER FLOW TEST RESULTS: WITH Aux Cooler: Pressure indicated on the gauge should stabilize below (20) psi. WITHOUT Aux Cooler: Pressure indicated on the gauge should stabilize below (30) psi. Higher pressure indicates cooler system is restricted. Repair as required. May require radiator and/or auxiliary cooler replacement. CIRCUIT WIRING: Check TCC (torque converter clutch) solenoid circuit wiring and connectors. Check for shorts to power or ground or chafing (rub-through). Check circuit wiring inside trans pan area. Repair as required. Check for electrical add-on equipment that may be involved. Remove add-on equipment if required If no circuit wiring problems are found replace the TCC solenoid. VALVEBODY: Remove and inspect valvebody assembly for stuck valves / cracks / damage / uneven mating surfaces / loose retaining screws / other. Check all mating surfaces with a precision straight edge tool. Clean and recondition valvebody assembly as required. Torque all screws to proper specification. Replace valvebody assembly if necessary. PUMP ASSEMBLY: Replace trans pump assembly / input shaft / seal rings / torque converter.
#14
Registered User
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#15
Registered User
Thread Starter
Well, I think I figured it out. Someone here posted that the stalling was caused by air entering the system, and I think they were right! I tighened all of the stuff I worked under the hood, but I didn't check the entire system. The suction line clamp was loose on the tank. This may have been letting just a little air into the system. The truck has been running and shifting fine. We'll see.