Why wont my 700R4 shift?
Check the gear and make sure the valve is not stuck in the governor. If the modulator is bad, you should be able to manually upshift it. If the throttle valve, mod., and gov. are OK, then it probably is internal.
When should a 700R4 shift?
Currently shifts from 1st to 2nd at about 4500 and from 2nd to 3rd at about 4800. The weights and springs on the servo are changed to move the shift points around. The TV cable can also play a small part in shift points.
At what RPM does a 700R4 shift?
Currently shifts from 1st to 2nd at about 4500 and from 2nd to 3rd at about 4800.
What does it mean when your 700R4 won’t shift?
700R4 won’t shift This is often a sign of a bad governor gear, or a TV cable that is not returning back when you let off of the throttle. Here is a pretty good resource on this subject. This is a pretty advanced problem for a shade tree mechanic and may be another one that you leave up to the professionals.
What kind of transmission does a 700R4 have?
The transmission in this case will contain pressure switches, a torque converter clutch solenoid, shift control solenoids and a duty cycle controlled pressure control solenoid. The earlier 700R4 and non electronic 4L60 were controlled by a hydraulic valve body and received throttle input, as stated above, from the TV cable.
Can you shorten the cable on the 700R4?
However, remember that on the 700R4 and 2004R Transmission the TV cable controls both shift feel (clutch apply pressure) and shift points, you therefore cannot alter one without altering the other. Shortening the Cable : If you shorten the cable (move it towards the adjuster tab), this raises both one pressure and shift point.
What’s the difference between a 700R4 and a TH350?
The 700r4 and the 200-R4 transmission replaced the TH350 transmission at that year. The TH350 was a 3 geared transmission without the last overdrive gear. The 700r4 was a big upgrade with an additional gear (Overdrive), the 1st and 2nd gear became longer, and the transmission case itself became a bit longer.
The transmission in this case will contain pressure switches, a torque converter clutch solenoid, shift control solenoids and a duty cycle controlled pressure control solenoid. The earlier 700R4 and non electronic 4L60 were controlled by a hydraulic valve body and received throttle input, as stated above, from the TV cable.
700R4 won’t shift This is often a sign of a bad governor gear, or a TV cable that is not returning back when you let off of the throttle. Here is a pretty good resource on this subject. This is a pretty advanced problem for a shade tree mechanic and may be another one that you leave up to the professionals.
However, remember that on the 700R4 and 2004R Transmission the TV cable controls both shift feel (clutch apply pressure) and shift points, you therefore cannot alter one without altering the other. Shortening the Cable : If you shorten the cable (move it towards the adjuster tab), this raises both one pressure and shift point.
When was the transmission changed to the 4L60?
It is also very easy to find replacement parts for this transmission. The 700r4 transmission was not electronically controlled yet; it was hydraulic pressure controlled with a TV cable which acted as a throttle position sensor to control the gear shifting. In 1991~ the 700r4 transmission was replaced by the popular transmission 4L60.