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My 700r4 shifts perfectly fine 1-3 but no overdrive and the pump also whines when at a stop in gear.. any suggestions before i go buy a new one?

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  • Cars & Trucks Master
  • 14,036 Answers

Sound like transmission oil pump has broken gears or vane rings.

Posted on Nov 17, 2013

Testimonial: "so would I be better off trying to replace broken parts or getting another trans???"

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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emissionwiz
  • 76846 Answers

SOURCE: 1986 corvette 700R4 transmission will

Are you sure the TV ( trans shift cable at the throttle valve) cable is correctly adjusted?? Without line pressure readings, I can only guess that the D3/Part throttle check ball is missing, if it is a trans problem
If the TV is correct, I am assuming that the TV cable is pulled tight at WOT.
Did you check the throttle (ACCEL) cable to be sure that the carb goes wide open when your accel pedal is on the floor?? This must be done with someone in the car and a second person looking at the carb. Without doing this, you do not know if you have WOT. Without WOT, the trans will not de-tent and shift down.

Posted on Jul 29, 2008

j_del
  • 1586 Answers

SOURCE: Transmission problems

First off, I'd try changing the fluid and filter in the transmission. I know a lot of cars claim "lifetime fluid" - it's BS. Believe me, even the lifetime fluids get very dirty. Change out the fluid and filter, and you could even add some Lucas stabilizer to it - that may well help cure the problems.

When the transmission goes completely, it may lock up the drive wheels, sending you into a careening slide, or it may kick out to neutral and coast to a stop. It's also possible that if it flat-out blows, it could fragment inside and you'd hear what sounds like bolts in a blender as you coast to a standstill.

Discounting the transmission blowing up, and just looking at driving in a drive gear other than overdrive, you're looking at more heat in the transmission due to the higher gear RPM, shorter fluid life, possible slippage of the bands down the road due to heat, and of course decreased gas mileage due to the engine running at higher RPM.


Posted on Aug 09, 2008

shaggyrat
  • 1224 Answers

SOURCE: 2003 chevy silverado will not shift into drive or overdrive.

transmission shift solenoid is stuck open this is a common vehicle issue in automatics and not particular to any make or model vehicle 15 dollar part and arm and leg for labor if taken in

heres an idea to try
take out the transmission filter and replace with new one make sure to take not of any metal debry in trans pan this indicates the trans had sheered its gears down and a trans rebuild is needed
the transfilter needs to be changed at a certain milage interval they can get clogged up
there is a kit you buy for your truck at any parts store
its an easy change hour of time unbolt trans pan unbolt trans filter and put new one in
kit comes with new seals less than an hour you can do it yourself

to overdrive you would feel a difference in shift badley if it was that something to keep in mind

Posted on Dec 06, 2008

Rickygittins
  • 715 Answers

SOURCE: 1992 700r4 transmission wont shift into

www.tvmadeez.com/tvinstadj.php
This is great info, need to pressure check trans to properly set up trans. for long life, check it out
Be cool

Posted on May 03, 2009

  • 312 Answers

SOURCE: 1987 chevy pickup, 700r4 tranny.

have you adjusted the tv cable at the throttle coming from the trany.

Posted on Oct 20, 2010

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