Never had this happen before. 1989 Chevy truck, with a 700R4 tranny. When you first start it up, It'll go into gear, but makes a terrible chattering noise, then after a minute or so, nothing. No gears at all! Fluid is full. I have another tranny to put in it, but I was wondering if anybody might know, what the hell went outta mine, and If it's worth rebuilding?
2007-06-02 06:05:33 · 4 answers · asked by chris j 7 in Cars & Transportation ➔ Maintenance & Repairs
Ever since I had it, it always shifted into second really hard after you wound it out, and would almost slip when tryin to change to drive, but would change.
2007-06-02 06:08:01 · update #1
Starts fine. Not like a loose flywheel or anything. Tranny sounds funny when in park as well. But not as bad.
2007-06-02 06:14:52 · update #2
Broken flex plate thats bolted to the crank shaft.
I own a 1991 2500 W\350 and had the same problem.
The flex plate is bolted to the engine, the torque converter is bolted to the flex plate. If the engine can't turn the flex plate, the tranny won't work.
Does it sound bad when you try to start it too?
ADDED: It could be something else of course, but if you drop the tranny, look carefully at the flex plate with the torque converter removed.
2007-06-02 06:12:35 · answer #1 · answered by Mr. KnowItAll 7 · 1⤊ 0⤋
Possible planetary gear unit went out. It is re-buildable.
The 700R4 trans is not a heavy duty unit and not meant to tow while in Overdrive. It is recommended to use Drive only while towing.
2007-06-02 06:13:41 · answer #2 · answered by epitt72 3 · 1⤊ 0⤋
either the torque converter has gone out or the pump in the tranny.
2007-06-02 13:58:19 · answer #3 · answered by mister ss 7 · 0⤊ 0⤋
Could be a broken sun gear.
2007-06-02 06:08:41 · answer #4 · answered by Ron B 6 · 0⤊ 0⤋