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99 Ram 5.2 Magnum rough idle
#1889996
08/12/15 01:05 AM
08/12/15 01:05 AM
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Joined: Nov 2006
Posts: 664 Stuart, FL
Grassosgarage
OP
mopar
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OP
mopar
Joined: Nov 2006
Posts: 664
Stuart, FL
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I picked up a '99 4x4 with a 5.2. It had been sitting a long time but fired up running rough. Replaced plugs, wires, cap, rotor, and had injectors cleaned. Truck runs much better but still a rough idle feels like a dead miss but runs well at higher rpm. Suggestions for troubleshooting ?
'70 Cuda 440/auto '70 Duster 340/4sp project '70 Satellite convert 318 survivor
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Re: 99 Ram 5.2 Magnum rough idle
[Re: Grassosgarage]
#1890003
08/12/15 01:11 AM
08/12/15 01:11 AM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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If you have access to a scanner watch for misfire.
Check for miss the old way, unplug plug wires one at a time.
Compression test
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 99 Ram 5.2 Magnum rough idle
[Re: Grassosgarage]
#1890210
08/12/15 12:48 PM
08/12/15 12:48 PM
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Joined: Nov 2006
Posts: 664 Stuart, FL
Grassosgarage
OP
mopar
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OP
mopar
Joined: Nov 2006
Posts: 664
Stuart, FL
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I've read about the plenum leak but don't understand that causing a dead miss. What about the idle air control?
'70 Cuda 440/auto '70 Duster 340/4sp project '70 Satellite convert 318 survivor
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