Tranny Issues??
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From: Monroe, NC
Tranny Issues??
I have just under 106K on my Expy and since I bought it w/59K 6 years ago, I have had a rumble when the truck starts to climb a hill, only if the tranny does not kick down. Now if I start out on a steep hill and accelerate I will sometimes get a clunk and the truck will surge. I have had the Fluid changed, but not recently as I am afraid that it may cause more harm than good at this stage. I have no codes or flashing OD light, also only tow small utility trailer w/ATV occasionally, so it has not been overworked since I have had it. I just want to see if anyone has an idea of the problem as I don't want to get stranded with the family somewhere.
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Flushing the tranny will never do more harm than good. I am not so sure you have a tranny problem though. They rarely clunk as you describe. That sounds more like a driveshaft or rear end issue. The vibration/clunk sounds suspiciously like a failing u-joint to me. The transmission should last a whole lot longer than 100k. The one in my F150 work truck is over 250k and still shifts perfectly. I would start with the driveshaft/u-joint diagnosis.
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From: Monroe, NC
It is not a vibration, more of a rumble just before the tranny downshifts. I agree the clunking maynot be related as it has a limited slip and I occasionally hear it clicking when accelerating when turning.
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OK...so you ask for other ideas, and I give you some, but still it must be something else??? If you are convinced it is the tranny, then why ask? Spend the money, and I hope it solves your problem. Still doesn't sound like a tranny problem to me. Your rear end should not click going around corners either. My guess there is a bad CV joint in front. Good Luck
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From: Monroe, NC
Settle down dude...I am not arguing with you I am trying to explain the problem as best I can. It may be the CV joints, I don't know but I did not come on here to get in an argument, I am trying to get ideas, that is what this site is about. If you get your panties in a wad that easily maybe this is the wrong site for you.
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Could be the rear differential clutch packs, or the transmission. You mention Limited Slip, maybe the person before you used Mercon instead of Mercon V in the Tranny (doing so will take out the anti-shudder qualities you are talking about), maybe they used 75W90 instead of 75W140 in the rear differential. You also need 4oz friction modifier in the rear diff when you drain and change. You might also be able to put a 4oz bottle of friction modifier in the Tranny and see if it helps.
Either way, you have let that shudder go on for far too long IMO. It might require large repairs.
Change/FLush the Tranny and replace the filter NOW!, no RIGHT NOW!
Either way, you have let that shudder go on for far too long IMO. It might require large repairs.
Change/FLush the Tranny and replace the filter NOW!, no RIGHT NOW!
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From: Monroe, NC
I agree, it has gone on too long, when I got it flushed around 65K it got better, almost gone. I have alot of maintenance to get done, just not alot of $$$ to do it with. I guess I am afraid to have the tranny flushed because I have heard horror stories of trash being broken loose and causing failure. My mom's 2001 had a massive failure right after she had hers flushed for the second time. Thanks for the help guys... I will get to the maintenance asap!!
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I agree, it has gone on too long, when I got it flushed around 65K it got better, almost gone. I have alot of maintenance to get done, just not alot of $$$ to do it with. I guess I am afraid to have the tranny flushed because I have heard horror stories of trash being broken loose and causing failure. My mom's 2001 had a massive failure right after she had hers flushed for the second time. Thanks for the help guys... I will get to the maintenance asap!!
FYI, don't drain the tranny in a good driveway or a nice yard. If you don't know what you are doing, it may spill everywhere. Use a very large tub and you should be fine! If you can change the oil in a vehicle, you can do the tranny. Just a little more mess and a little more time consuming. Get someone in there to bump the torque converter around until you feel the drain plug. (don't keep your fingers in there while they are bumping though!
)
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Just seems like a couple of u-joints is the cheapest route, at least check them out. I think the tranny flush thing is a myth. People with already failing transmissions having flushes done and then when the bad tranny goes it is somehow the fault of the service. If you are due, you should do it. Most synthetic gear lubes, which is what your rear end requires, already contain the friction modifier needed for the LSD. Not having the friction modifier with cause the rear to vibrate/chatter when accelerating through a turn, but you shouldn't hear a metallic clicking, that is almost always a CV.
My "wad" problem is when people come on forums, ask for advice, but already seem convinced of something else. They don't really want advice or ideas, just confirmation of their original idea. I wasn't trying to argue with you either, just giving you ideas other than the one you were fixated on.
My "wad" problem is when people come on forums, ask for advice, but already seem convinced of something else. They don't really want advice or ideas, just confirmation of their original idea. I wasn't trying to argue with you either, just giving you ideas other than the one you were fixated on.
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