shuddering at 48 mph

[mrd2001]

I started to feel a shudder while accelerating at about 48 mph in my 96 Expo. It feels like it is happening as the tranny wants to shift into overdrive. Any Ideas?

[AutoService101]

Check your u-joints and driveshaft

[mrd2001]

Already have been there. Everything is nice and tight. Going to try Lubegard Red and see it it helps.

[danielsatur]

Focus on engine performance. 1st
If the performance isn't there, it could make a good transmission look bad.

[AutoService101]

Originally Posted by danielsatur

Focus on engine performance. 1st
If the performance isn't there, it could make a good transmission look bad.

I agree, I would see if any codes have been stored in the system and go from there. Even if the light does not come on it could have still coded up...

[mrd2001]

There are no codes stored, engine is fine. Definitely tranny or rear end. I had to order the Lubegard from ebay. Nobody around my area carries it. I've heard that this is common in Ford transmissions and the Lubegard is a cure. It's worth a try and can't hurt Anyone else ever try Lubegard?

[AutoService101]

No I have typically used BG products...It is worth a try though, would be a cheap fix if it works

[mrd2001]

Well, it seems that the lubegard Red helped out a bit. After about 50 miles the shudder seems to have disappeared. I still feel it slightly on a slow acceleration but nothing like before.