09-13-2006, 01:55 PM
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Confoundingly Lucid
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Join Date: Oct 2005
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Re: 700R4 TCC Lock-up
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Originally Posted by capriceforever
I've got an 88 Caprice (305 4bbl) with the 700R4 transmission, and a 90 (307 4bbl) 200R4, both with E4ME carbs and EST.
At freeway speed in 4th locked up, with my 200R4, when I lightly press the accelerator, I can feel the RPM kickup when the TCC disengages, and if I press further, it will drop from 4th to 3rd. I find the 200R4 very responsive.
My 88 caprice with the 700R4 however, if you step on the gas, it tends to bog down and the TCC won't disengage. You have to almost mat it, and it drops down into 3rd, but if you release the medal it wants to immediatley go back to 4th and locked up, bogging it down again. If you drive in 3rd gear, as you step on the gas you can feel the TCC engaging and disengaging, while remaining in 3rd. Its very frustrating on freeway on-ramps, so you have to manually shift it into 3rd a lot.
Not sure if this is a problem with the 700R4 or if its per design. No error codes and the new Throttle Position sensor (TPS) didn't change anything.
Just curious has experienced bogging down because of the TCC not disengaging with the 700R4.
Thanks
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You might be having a problem with the TCC solenoid. Does it seem to stay in lockup at lower speeds (such as when slowing for a light)?
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1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1!
2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness!
1967 El Camino L79/M20 old school asphalt raper
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