Transmission Problems
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Mountain Pass
Joined: Apr 2004
Posts: 159
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Transmission Problems
Problems started this morning. Heard a clunk when stopping twice. Then a swirling/grinding when I was accelerating. Then driving about 45mph and it started buzzing/grinding then slammed, like someone trying to push a manual tranny into gear without clutching. The earliest I can get it into the shop is Tuesday. Anyone have any ideas what this could be? I'd like to go in with a heads up.
Thanks.
Thanks.
New User
Joined: Sep 2004
Posts: 1
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lost transmission
Our truck is a little over 1 year old with about 30,000 miles -- a few weeks ago I drove about 1 hour from home, and while pulling into a parking lot, I felt what you felt BUT couldn't go anywhere, put it in park, then into drive again and put my foot on the gas but it wouldn't go anywhere, then all of a sudden jumped! Then I somehow got it into a parking place and tried to reverse, but it wouldn't go anywhere! called AAA, they towed it to the nearest dealer, and they had it for one week and replaced the entire transmission with NO explanation of why it happened! In the wise words of the service man, "something broke"! No kidding! what happened with yours?
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Mountain Pass
Joined: Apr 2004
Posts: 159
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Mine turned out to be the 4 wheel drive system. My front right hub keeps trying to engage without me touching the switch. It's now been in 3 times. The first time they found a TSB against it that said the vacuum lines that run the auto locking hubs come loose and lose pressure causing this. That didn't fix the problem. The second time they decided to replace the PCM. They had to order the part and then they installed it the 3rd time in. STILL NOT FIXED!!! It's going BACK IN friday. At least they're giving me a car this time. What a pain in the a$$! 18,000 miles, just over a year old. I might have to get rid of this one at the end of my warranty. All that grinding/clunking/slamming can't be good for it. I heard consumer reports rated the '04 unreliable based on the 4 wheel drive system and they've fixed it for the '05's and up.
New User
Joined: Jun 2007
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Hey all, first time posting here.
Last week I had the same issue with my 2004 FX4, it has 73000 miles on it. I brought it to my mechanic and he traced the problem to the hubs also. He simply removed and capped the vacuum lines and with that the chattering has gone away and the truck still locks up 4 wheel drive. Hope this helps. I am confused as to why it worked but it did.
Last week I had the same issue with my 2004 FX4, it has 73000 miles on it. I brought it to my mechanic and he traced the problem to the hubs also. He simply removed and capped the vacuum lines and with that the chattering has gone away and the truck still locks up 4 wheel drive. Hope this helps. I am confused as to why it worked but it did.
Fleet Mechanic
Joined: Nov 2000
Posts: 1,713
Likes: 2
From: In my House
Brian, I would bring it back to him. What he did by capping off the line, is permanently lock the front driveline into 4x4. Which means that your whole front driveline is turning all the time. The front end only connects to the transfer case when you actually shift it into 4H or 4L. Your mileage will suffer also. Have him reconnect the lines and try and replace the IWE solenoid behind your battery. The is the solenoid that controls the vacumn to the front hubs. It ingest water and shorts out.
Rich
Rich
Fleet Mechanic
Joined: Nov 2000
Posts: 1,713
Likes: 2
From: In my House
No problem Brian....That's why were here. The way our 4wd system works, is that when you shift into 4wd it releases the vacumn to the front hubs, thus, locking them into the front driveline. When not in 4wd, there is constant vacumn to the hubs in front to keep them unlocked.
Rich
Rich
