Transmission "Shuddering"

[grasshopprdisco]

2008 EL...transmission is "shuddering" intermittently while driving. I know it needs fluid and filter change.

 

[99WhiteC5Coupe]

2008 EL...transmission is "shuddering" intermittently while driving. I know it needs fluid and filter change.

I think the answer to the problem is in your post......

 

[grasshopprdisco]

That is what i certainly am going to do first, hoping that is all it is.

 

[USMCBuckWild]

Shuddering is bad. If you know it needs fluid and filter change do not delay doing so or you are going to need a new trans. I know, stating the obvious.

 

[1955moose]

I'm probably going to hear crap on this one, but you don't do a filter/ fluid swap to fix an automatic transmission problem. How many miles on your vehicle? If transmission fluid is burnt, draining and refilling makes shift and noise problems worse. You will need to diagnose your problem first.


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[grasshopprdisco]

I'm probably going to hear crap on this one, but you don't do a filter/ fluid swap to fix an automatic transmission problem. How many miles on your vehicle? If transmission fluid is burnt, draining and refilling makes shift and noise problems worse. You will need to diagnose your problem first.

It's past due for fluid and filter service anyway, approx 160k miles.

 

[1955moose]

Is the shudder at certain speeds? Their have been quite a few forum members that have referred to their shuddering as rumble strips. It seems to be worst at about 40-50 mph. A few times it has been a problem with their torque convertor. Check online if their are any tsb bulletins from dealer. Sounds like either way trans will have to be torn into. You might also want to dump your codes from diagnostic port, to see if anything pops up. Rember, you don't want to guess and throw money and parts at your SUV. Keep us posted, what you find.


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[USMCBuckWild]

I had the same shuddering in my wife's 08 4.6 Exploder at 146k. I did a basic trans service (Motorcraft filter and Valvoline MaxLife ATF) and it cleared up immediately. Cost me about $60. I have since changed it to AMSOIL due to getting a great deal on it.

The weekend I got my Expedition I did a trans service on it as well. (Motorcraft filter and leftover AMSOIL) Preventative maintenance.


Just my $0.02.

 

[1oldtimer]

I would also suggest seeing if there is an update for the tranny and ECU.

 

[grasshopprdisco]

Going in to shop this week for fluid and filter change, scheduling in between baseball games and practices. What about a modulator, is there one and should it be changed out also?