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one in a million
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148 Posts
Discussion Starter #1
Hi,

I have been chasing a weird cutting out issue on my 95 cougar 4.6
sometimes it will do it under light acceleration but more likely under wot when fully warmed up.
cruising at 25-30 mph if i decide to wot it will shift down to 1st and right before 2 it cuts out and free revs.
it will go into 2 after i let off the gas with no problem.

all connections are good. new walbro 255 fuel pump, fuel filter, motorcraft plugs and wires, alternator.
no vacuum leaks or check engine light.

transmission shifts fine under normal driving conditions.

anyone have experienced anything like this ?
I'm lost and getting tired of thinking it could be this or that and throwing money at parts.
 

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Super Moderator
1997 Thunderbird 4.6, 1998 Mark VIII LSC
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9,452 Posts
Could be a failing one-way clutch. Stock 95 trans - any mods to it (e.g. Jmod)?
 

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one in a million
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148 Posts
Discussion Starter #3
I done the J-mod about 10 years back, mild with spring left in on 1-2 piston.
fresh fluid and filter last year and had to change reverse servo.

would adding a transmission cooler help at this point to get a few more miles out of it ?
 

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Super Moderator
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12,423 Posts
Adding a cooler always helps. (Unless you live in the great white north)
 

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Super Moderator
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10,910 Posts
Drop the pan and look for problems; a wasted roller clutch will leave metal stuck to the magnet; a stuck 1-2 accumulator can also cause that problem, especially if the spring broke and is wedged in place.

I'd look at those things first; post up a pic of the pan magnet.
 
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