Surging
Posting Guru
Joined: Feb 2011
Posts: 1,032
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From: Smithfield N.C.
Fords are notorious for feeling like they have a surge when a misfire occurs, probably not your problem, but maybe? Can you give us a little more info? under what conditions? Up hill, down hill, pulling a load, ect.
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
Definitely need more information...
My '95, 302, 4wd, Ext. Cab, Eddie Bauer, w/4R70W transmission surges between 62-68 mph, regardless if it's in OD or not. It's something to do with the tone ring...truck was abused and I have swapped PSOMs, and VSS sensors. And I'm just gonna live with it since it has 253,XXX miles.
My '95, 302, 4wd, Ext. Cab, Eddie Bauer, w/4R70W transmission surges between 62-68 mph, regardless if it's in OD or not. It's something to do with the tone ring...truck was abused and I have swapped PSOMs, and VSS sensors. And I'm just gonna live with it since it has 253,XXX miles.
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
Have you checked for codes?
Did you purchase it this way?
How many miles?
When was the last tune up?
Does the PSOM needle waiver?
Does the OD light flash on the shifter handle?
This is what we're asking for...Need more information...
Did you purchase it this way?
How many miles?
When was the last tune up?
Does the PSOM needle waiver?
Does the OD light flash on the shifter handle?
This is what we're asking for...Need more information...
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Mountain Pass
Joined: May 2005
Posts: 209
Likes: 0
From: Arizona
No codes
Had truck since it was new
181,000 miles
Last tunes up in July 2016
OD light does not flash
PSOM if you are talking about the speedometer needle if waviers just alittle
Had truck since it was new
181,000 miles
Last tunes up in July 2016
OD light does not flash
PSOM if you are talking about the speedometer needle if waviers just alittle
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Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
And yes on the PSOM. When does it begin waviering?
The PCM relies on the VSS and the PSOM to communicate together. If either are erratic, then that can cause a surge. I feel and see It when I'm using Speed Control (Cruise) when the speedometer needle waivers between 63-68mph. I can only feel and see it. If I'm cruising above or below the indicated speed of 63-68, I never feel it.
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