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6.2 MPI surges and quits

Old 06-13-2008, 04:35 PM
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Default MPI Experts Please advise!

2002 6.2 MPI 320 HP engine w/325 hrs runs about 15 minutes from cold start, surges and quits. Will restart after a few minutes but won't run for long. From a hot start, won't run for long. I have twins, so I have swapped or replaced:

1. Cool fuel package, regulator, pump, all of it
2. Engine Computer and TPS, MAP, ECT & IAT sensors, coil, cap rotor, distributor sensor (magnetic pickup) spark plugs, fuel filter
3. Cleaned all grounds, verified fuel pressure with a guage, verified TPS volts and resitances

After all of this it runs about 25 mins, otherwise nothing has changed, same symptoms.
Ideas? Anyone ever seen this? Bad wiring? Bad alternator?Bad battery? Ignition switch?

Joe

Last edited by SOFPilot; 06-16-2008 at 05:11 PM. Reason: title & content update
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