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Posted on Jan 02, 2017
SOURCE: motor dies when put into gear
If the engine idles perfectly and it is an automatic, check the Torque Converter Clutch Solenoid. If you disconnect the wires to the TCC and the problem goes away you have found the problem. You can still drive the car until you replace it, the torque converter just will not go into lock up mode and you will use more fuel. Here is an excellent article on this issue. The same site will tell you exactly how to replace it. http://autorepair.about.com/cs/troubleshooting/a/aa061701a.htm
Posted on Aug 08, 2009
Hello. As you know, the transmission is one of the more sophisticated components in any auto. It takes the most transmission pressure to engage reverse, third, and fourth gear in an auto tranny. In an auto tranny, the shifter is connected to a linkage that manually shifts between the different gears in the transmission. When you shift into reverse, all transmission pressure is concentrated to engage reverse. When you shift to drive the transmission will operate normally, building pressure until it can shift into the next gear. With third, second, or first gear selected it will lock out all higher gears (Unless the TCU detects overrevving of the engine, in which case it will override gear selection and upshift to avoid engine damage). All the TCU does in a modern auto tranny is control shift points. Years and years ago, shifting was controlled by a spring attached to the gas pedal. When the gas pedal was depressed, the spring would expand. As tranny pressure grew, the spring would become compressed until it was fully compressed, engaging the next gear. The harder you stepped on the gas, the longer you went until the tranny shifted. In modern transmissions the TCU dictates shift points, and not much else. The TCU will also control when the torque converter will lock, but that's where it's duties end. The problem with engaging reverse is either a linkage issue, or a problem with the pump not building enough pressure to fully engage reverse.
Try putting the shifter in reverse, holding the brakes firmly, and giving the car gas. If the car reaches a higher RPM and suddenly slams into reverse it is the pump. The pump will only build enough pressure to engage reverse with higher RPM's. If the pump is severly damaged it won't engage at all, but if this is the case it probably won't engage third or fourth gear either at that point. If the problem is with the linkage, reverse just won't engage whatsoever, despite RPM's. I'd say start with the shift linkage. If it's bent or misadjusted it could cause reverse to not be fully engaged. The TCU doesn't control reverse at all, since there are no shift points and no need for the torque converter to lock.
Posted on Nov 20, 2009
Basically you should have the vehicle's reverse circuit pressure tested by a certified ASE Transmission Repair Shop.They will be able to tell you if there is a blockage in the cricuit, reverse shift solenoid is on its way out ,or a gearing problem even if there is a manual shift valve issue. Good luck
Posted on Mar 21, 2010
SOURCE: No Reverse
Check the oil trans filter. Could either be a bad linkage, or a bum synchro. Does it just flat not
go into gear, or does it grind when you try to do it? Can you put it in
reverse with the engine off?
I dont know exactly witch is you tranny; it sound like you broke the sun shell in the transmission.
For example, this is pretty common with the Chevvorlet 4l60e Transmission, when the sun shell breaks you will lose reverse and fourth gear, the only remedy is to replace the transmssion or have it repaired; the repair will require the transmission be removed and disassembled, you will need to purchase a new sun shell (get a heavy duty replacement) and a papper rubber kit for the repair, just find a good trans guy to provide the labor.
Hope this help.
Posted on Apr 07, 2010
Testimonial: "This SOUNDS like a good response, I will check and see if top gear is available (I know that 2nd and 3rd are there. This is full time 4WD with O/D"
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