th350 converter lockup
 

hey i got a 84c10 with a 305/th350 combo

how can i check and see if my lockup converter is doing its job?
it dont feel like its locking up at all?

under acceleration at like 3000rpm im doing like 85
but when im just at highway speeds at 3000rpm im only doing 70

Re: th350 converter lockup
 

The lockup on mine feels like a third shift, but with a small decrease in RPM.

Slonaker

Re: th350 converter lockup
 

yeah i dont feel nothing like that

Re: th350 converter lockup
 

mine doesnt feel like a shift at all, but it seems like it dropped 200 rpm @ 70.

Re: th350 converter lockup
 

i dont see and feel anything.i keep my eye on the tach..is there a senser i can check or somthing?!

Re: th350 converter lockup
 

vacuum switch on the firewall.

Re: th350 converter lockup
 

where at on the fire wall and how would i test it

Re: th350 converter lockup
 

anyone?

Re: th350 converter lockup
 

Tap your brakes when you are at cruising speed (over 45 MPH). You should feel it unlock, and re- lock up. There should be about 200 RPM or so difference.

Re: th350 converter lockup
 

It's over the brake booster.

Re: th350 converter lockup
 

ok ill try that tomorrow and let u guys know