I had the transmission rebuilt a few years ago. No issues with that. We have a bad snow storm up in NY and put the vehicle in 4wd and it made a grinding noise while idling or moving. It was not a constant noise but it came and went. When I took the car out of 4wd the noise immediatelly stopped. I'm freaking out because I'm thinking it's the transmission but then I'm reading online and it appears more related to the axl assy or hub and bearing. Any help is greatly appreciated
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Re: 1997 Mazda MPV makes a grinding noise in 4wd
You can check the hub bearings very easily by jacking the front of the vehicle up and shacking the tire from top to bottom and seeing if there is excessive play.If there is then you know it is a bearing if not then you know you have to look deeper.
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My 2WD 1996 Mazda MPV transmission dipstick is a black stick, from out side, it look about a foot long from bottom to top with a black handle that is about 2 inches long and 3/4 inch wide. It is locate between the battery and the engine, actually, the top of it is a little bit lower than the bottom of the battery and closer to the front of the engine where the belts are.
My 2WD 1996 Mazda MPV transmission dipstick is a black stick, from out
side, it look about a foot long from bottom to top with a black handle
that is about 2 inches long and 3/4 inch wide. It is locate between the
battery and the engine, actually, the top of it is a little bit lower
than the bottom of the battery and closer to the front of the engine
where the belts are.
When you press on the shifter you are putting pressure on a bearing. That is most likely the problem. It is about as cheap to rebuild it as to find a used one. Not to many around. If you rebuild it, get the bearings, syncronizer and any gear that has teeth missing.
It would be one of 2 things. Either the transmission is very low on fluid or the pump inside it has gone bad. Check the fluid first. If the pump is bad call the rebuild shop to see if there might be warranty left. Hope this helps.
Most transmission shifter ( where you shift) has a linkage control to shift gears in the transmission.
Those joints from the linkage have bushings made of rubber. Once these rubbers were worn down and torn, the noise from metal friction from linkage can give you that intermittent noise. When the gap from the linkage joint enlarges in lieu of the bushing space, it causing the engagement of shifting is off from original position that was why you are experiencing "binding in other gears"
Have a different shop to check out these linkage control bushings and replace them. The bushings are cheap and it probably takes about 2 hours the most to replace them. This will save you a lot of money on spending on unnecessary repair. Good Luck.
Well depending on the noise, it could be a starter, or it could be whats called the flex plate (assuming yours is like most and its an automatic) There is a sheetmetal plate that bolts to the crank of your engine that then allows the torque converter of your transmission to turn. This Flexplate that connects the turning part of your engine and the main turning part of your transmission also has a ring of teeth on it that the gear of your starter engages into to turn the engine round to get your car started. If its a tinging or clanking sound similar to to the metalic sound of aluminum or light stainless frying pans then it might be a flexplate going bad. If it sounds like a deep clunking noise it might be an engine problem. If the initial sound is more of a grinding kind of noise and then goes away after a few seconds of running the starter may be staying engaged after the engine starts. That would be the starter and maybe an additional problem with the flexplate as well. If its a flexplate sound there should be a cover on the bottom of the transmission directly behind the engine that has just a few bolts . Jack up the car, put it on jack stands or drive it up on some ramps. Unbolt the cover and see what the flexplate looks like. See if the teeth are bad and lightly push it with a screwdriver or something and see if it is loose. If could also be a torque converter going bad but the transmission would normally slip if that was the problem.
Hope this helps you narrow it down...
Sounds like the front drive axles are worn.My 89 MPV had the same "clicling" noise with an occasional clunk.The reason you feel it more in 4wd mode is because power is now being transfered thru the worn axles. I replaced both sides for approx $375(Axles rebuilt were 130 for drivers side and 110 for passenger side the rest was labor)