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Sputtering

Tiny
PUMAKITTEN
  • MEMBER
  • 12 POSTS
Well, the trip was okay, with one stall at a red light, two sputters and two stutters. We still have not checked the fuel line pressure, but I am leaning toward a cam position sensor or the air filter thingy. The MAS? MAP? Sensor? When idling, the engine will sputter and then the radiator can will start. It will idle fine, then sputter and the fan will shut off. I think that is what happened when we had the sputters on the trip. Still looking for a scanner.
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Wednesday, May 23rd, 2018 AT 11:52 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,476 POSTS
Cam sensor will not normally cause this type of problem. It would misfire all the time, not just at idle. The best option would be to find a scan tool and actually read the code(s) and live data.
With it sputtering when the fan comes on/off I would also look at the battery voltage when that happens. That fan is high draw and it could be that is pulling the system voltage low enough that the coil goes intermittent. They are a known weakness on that engine.
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Wednesday, May 23rd, 2018 AT 12:37 PM

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