Question about 1994 Toyota Previa
Drove 96 Previa hard for about 45 minutes against huge headwind - I kept it in cruise control @ around 80mph. Since then engine runs a bit thicker, but worse, it now has a low rumbling noise coming from the rear that includes a low vibration. When I slow down or make L or R turns, the rumble slows & sounds like cogs are slowing with my rate of speed. I took it to dealership and was told something about the rear differential being questionable. If it is the RD, how much time do I have? What's the damamge if I wait too long? And what should I expect to pay? I think I have a good lead on some Previas in a local junk-yard...
My 96 low rumble was caused by the U joints on the drive shaft. The front drive shaft starts near the rear of the vehicle, transfer case. The U joints are non-replaceable, so I had to buy a new one from Toyota. The parts guy said it was the only one they could find in the US. Around $650. Alternative was to ship the drive shaft to an outfit in Texas that cuts of the old U joints and welds on replaceable types, cost around $500. I changed the center drive shaft support bearing too. No more rumble.
Posted on Dec 19, 2017
Hi. I am the owner of a 2007 camry LE. And let me tell you, i still experience the same behaviors with my car as well. The erratic 30-40 mph shifting is either up or downshifting due to the innovation of the ECT-i (Electronic Controlled Transmission with intelligence) meaning the car has two ECUs, one for the engine and one solely for the transmission. Altough the engine recognizes the car is going at these speeds, the transm. keeps the highest gear (5th for 4 cyl engines, 6th for the V6 engine) at low revs, ergo, producing the rumbling vibration you hate the most. Mine has 40,000mi and never took it to a dealership, it is not as bad as it was at the begining. The Cruise Control situation, i have the same problem and is not gonna change, due to the same ECUs situation, both of them conflicting wether it is fast or slow, rich or lean, up or downshift, until they get a program solution. All i do is: engage cruise ctrl while on straightways and disengage when coming to an uphill. Other than that, I think is the best investment I've ever made. Just ordered a set of wheels for it this week. Hope this will help.
Posted on Aug 22, 2008
There are a few things that this could be, and I see that you have replaced a few of the items that it could be but steering systems are a weird thing so here ya go:
Post more info you would like, to pass on.
Posted on Mar 17, 2009
It sounds like it could be but if on front it would shake the steering wheel,, and if no rear you would find it going very slow as the tyre would make the car go bump,,, but it could also be the Tail shaft if under the car,, and steering worn which you would also feel on steering, so get the tail shaft checked out first.
Also get the g/box check out as that also could be the sameas without hearing its hard to say for sure.
Posted on Oct 27, 2009
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