700R4 converter lock up?

[72monteman]

Having Trouble w/ the converter staying locked when in 4th gear?
Any ideas?

[GetMore]

Is it not staying locked, or is it not unlocking?

[72monteman]

its not staying locked...

[GetMore]

What are you using for a controller? Does it have a vacuum connection or a TPS connection?

[72monteman]

i dont know to be honest, i had the transmission put in last year is a conversion from a turbo 350 on a 72 monte carlo. i think it is a vacuum connection there is a lead wire running from a switch on the diver side to a hot, this is the only electrial item i see?

[PRRC]

What are your shift points. It should lock up with the switch on at about 48-50 MPH. 700R will getting sloppy if the detent is adjusted incorrectly.
Tim

[72monteman]

it will lock @ crusing spead as you said around 50 mph ..but will not stay locked will jump in and out i can see it on my tack and fell it lock and un lock

[MarkB]

Have you had a chance to see how the switch is wired? If there is only one wire coming up from the transmission and hooked up to a flip switch, then you need to check your connections. If the connections feel tight and look good, you could have a solenoid cracked. The converter clutch solenoid cracks at the plastic snout where the check valve seats. (you will not see this unless you disassemble the solenoid) If you you have a vacuum switch, then you need to check vacuum lines very well and the connections. Let me know what you find I will try and help you determine the problem.
If you need to replace the system check out Bowler Transmissions Lock-up module.

[72monteman]

Thanks Will Get To Work