Why wont my car shift outta 3rd at full throtale
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Joined: May 2002
Posts: 238
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From: ohio
Why wont my car shift outta 3rd at full throtale
I was wondein why when floor it and it kicks down a gear it wont go past what i think is third the car just goes faster and sounds like it is revvin relly high whats wrong. this happens when i in OD also.
Senior Member
Joined: Jul 2002
Posts: 815
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From: Toledo, OH
Car: '87 Formula
Engine: 350
Transmission: Auto
In the 700R4 transmissions, GM made it so that if you press the gas pedal more than (2/3 I think it is?), it will automatically kick back down to drive from OD. The only way to fix this and get top speed possible from your 700R4 is to buy the kickdown valve. I dont know the part number but I'm pretty sure it's in the tech section of this site. This would fix your problem.
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Joined: Jul 1999
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From: Calimesa, California, U.S.
You will need to block the 4-3 part throttle kick down passages in the TV plunger sleeve. This will allow 3-4 WOT shifts and eliminate 4-3 kickdown at just about anything above 75 mph.
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Joined: Sep 2002
Posts: 234
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From: Jacksonville, Tx
Car: 91 RS, 00 TA Ram Air, 86 IROC
Engine: 305 tbi, LS1, 355
Transmission: 700R4, 4L60E, 700R4 NonLU
Originally posted by Pro Built Automatics
You will need to block the 4-3 part throttle kick down passages in the TV plunger sleeve. This will allow 3-4 WOT shifts and eliminate 4-3 kickdown at just about anything above 75 mph.
You will need to block the 4-3 part throttle kick down passages in the TV plunger sleeve. This will allow 3-4 WOT shifts and eliminate 4-3 kickdown at just about anything above 75 mph.
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