700r4 Overdrive Problem
03-21-2010, 11:28 AM
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Transmission: Manual and Automatic
700r4 Overdrive Problem
The transmission will not stay in overdrive.It will go into overdrive if the car is going up a slight grade,but shifts back into third if on straight and level or slight downgrade.Anyone....Ideas....I have changed the fluid and filter twice.?????
03-21-2010, 11:09 PM
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Car: '78 GMC Sierra Heavy 1/2
Engine: GMPP ZZ4 Q-Jet
Transmission: 700R4 Stage 2 w/Race Internals
Axle/Gears: 10 Bolt 3:42 Eaton
Re: 700r4 Overdrive Problem
Your system runs on both the ECM and Vaccuum Pressure, if I'm not mistaken
It will kick out of over-drive and lock-up when the engine is under load
It will only stay in over-drive under easy-load situations, mostly, on flat stretches
Changing the fluids will not help
What year is your buggy?
It will kick out of over-drive and lock-up when the engine is under load
It will only stay in over-drive under easy-load situations, mostly, on flat stretches
Changing the fluids will not help
What year is your buggy?
03-22-2010, 04:32 PM
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