95 F150 5.0L Autotrans

What causes the engine to surge in overdrive

 

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.

 

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.

 

It only surges in OD on the highway around 60 to 75.

 

You're probably misfiring, as mentioned.

 

No misfire engine is smooth as can be

 

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...

 

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

 

No codes, does that mean you got a System Pass code of 111?
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.

 

Any issue with the PSOM will cause transmission issues. Does lightly tapping your brake pedal (just enough to make the brake lights come on) cause the surging to stop?

 

It surges between 60 to 75mph.
Don't know it goes away if I tap the brake pedal i haven't tried that