Search for "van shudder" on the forum, and you should get a few posts about it.
198k, never serviced transmission, wondering why it's shuddering..................I'll have to try that. I always thought it was slipping, so I roll back down and get a little run at it (uphill driveway). These transmissions blow out reverse first if low on fluid. I haven't done any maintenance to my transmission yet with 198,000 miles on it (bought it with 189K) and who knows what's been done to it before? I have a filter, gasket, and a pan with drain plug ready and waiting.
30-50k is a proper interval. If you're running almost 200k on fluid and filter, it's no wonder all your vans have shuddered.I haven't serviced because engine started making noise and I thought I had a bearing going bad. Dropped the pan to change rod bearings, got it together - still making a thudding noise and mildly shaking. Knowing the problem is deeper in the engine, I bought another van for the drivetrain. Leaving the transmission maintenance for when I pull the engine, because torque converter will be removed anyway and I'll have to drain tranny fluid.
My 3rd gen van always did this too, and I DID change fluid and filter in it twice. The line pressure is just too low in reverse, and the clutches slip. For hills, you have to get a little run at it and maintain momentum. For backing up a heavy trailer, you just have to baby it.
30-50k is a proper interval. If you're running almost 200k on fluid and filter, it's no wonder all your vans have shuddered.
This has NEVER occurred in any of our 20+ vans over the years and we've taken all of them over 200k miles.
I suppose you never change your oil either? I mean oil sees contaminants and heat breakdown, but it doesn't get the extreme pressures that trans fluid does, so why would you need to change that?Not really, just a waste of resources.
I never do ATF change on any of my vehicles, never have those transmission problems people who change ATF have.
Actually, I do change engine oil at least once a month.I suppose you never change your oil either? I mean oil sees contaminants and heat breakdown, but it doesn't get the extreme pressures that trans fluid does, so why would you need to change that?
Good for you, you've managed to get lucky, not changing a fluid that sees heat/contaminants/pressure breakdown on a daily basis is just not bright.
So it makes sense you need to change your oil but you can't wrap your head around changing your trans fluid........Both see thermal breakdown, both see contaminants which fill filters, trans fluid gets the addition of extreme pressures, why would one need to be done and not the other?!?Actually, I do change engine oil at least once a month.