Engine Surging

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May 15, 2007 | 09:12 PM

mikedeason

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Engine Surging

I've got an 05 V10 that is surging badly on idle. It has gotten much worse recently. If I am stopped at a light the engine will surge 3 to 4 times in a matter of 2 min.

Any ideas?

May 16, 2007 | 09:44 AM

tankhead

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From: Roswell USA

Maybe an air leak not getting metered by the MAFS. Check the top of your engine for an EGR coming from the right side that is known for leaking at its 90 degree bend.

May 16, 2007 | 01:13 PM

jvoigt

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From: Hamilton, MT

O2 sensor maybe, does it seem to surge into a low power state and then back to normal power? A bad 02 sensor will trigger a rich mode or normal mode and that can cause a surgeing type effect. I am just guessing, my '89 ranger did the same thing and it turned out to be an 02 sensor.....BUT! a '05 V10 and the '89 v6 that was in my ranger are totally different but I can imagine the 02 sensors have not changed much in the theory of operation.

May 16, 2007 | 01:18 PM

BPofMD

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From: Millersville, MD

A bad plug can also do it....how many miles on your V10? Check for one or more fouled plugs.

May 16, 2007 | 02:29 PM

sglynx1

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You can always use a belt sander or an angle grinder to fix the problem with the idle... but my bets gonna be on an o2 sensor or your MAF sensor could be fouled. Never rule out the stinger rocket launcher... it will successfully relocate your engine mis-idle.

May 16, 2007 | 02:56 PM

FortyFords

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Joined: Jan 2002

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From: USA

You need to take it in to the dealer and have them reflash the pcm .
There is a TSB on this problem 2005-2007 v-10's
Tsb 06-23-9

Rich

May 16, 2007 | 02:57 PM

COWBOYCADDILAC

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From: eustace texas

look for vaccume leak or intake leak, you can rule out plugs or 02 sensors.
02 sensors are makeing it surge due to the info from exaust , rich or lean due to vaccume leak.