TC lockup
04-01-2010, 08:55 PM
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Car: 2004 GMC 2500HD
Engine: Duramax LLY
Transmission: Allison
TC lockup
Ive asked this before but havnt had much luck with it. Anyways my question is what can I tie the TC vacuum line into to make the converter work properly? Right now the hose is just sitting there under the hood.
PS the vacuum canister has been removed along with the EFE system. Thanks.
PS the vacuum canister has been removed along with the EFE system. Thanks.
04-01-2010, 09:16 PM
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Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: TC lockup
so you have the kit already?
04-01-2010, 09:22 PM
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Car: 2004 GMC 2500HD
Engine: Duramax LLY
Transmission: Allison
Re: TC lockup
Sorry no I dont have a kit. Im talking about the stock line thats there. Its called the trans converter switch.https://www.thirdgen.org/forums/atta...1&d=1270174904
04-01-2010, 09:26 PM
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Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: TC lockup
looks like it goes to full manifold vacuum
04-01-2010, 10:20 PM
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Car: 2004 GMC 2500HD
Engine: Duramax LLY
Transmission: Allison
Re: TC lockup
Just get some "T" connections and tie it in to the hose from the EGR TVS to the EGR valve?
Ive barely driven the car at all so I dont know much about the way it drives but with the Trans switch unhooked what would be the expected characteristics?
Ive barely driven the car at all so I dont know much about the way it drives but with the Trans switch unhooked what would be the expected characteristics?
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06-05-2010, 05:45 PM
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Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: TC lockup
Tranny runs a little hotter at highway speeds, and mileage isn't as good.
06-05-2010, 05:52 PM
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Car: 85' Trans Am !best car ever!
Engine: 305tpi 215hp LB9 two bolt,
Transmission: th-700r4
Axle/Gears: stock (3.27)
Re: TC lockup
Sometimes the torque converter locks up prematurely. Chirping tires and the "sound" the engine downshifting from high revs to low. MIne is above the break pedal and engages about 44 mph. Ive replace the switch once.
06-05-2010, 09:17 PM
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Car: '91 Chevy 1500
Engine: 350
Transmission: 700R4
Axle/Gears: 3.73
Re: TC lockup
Isn't it hard on the converter also if you have a lockup that you don't lockup? I've heard that before.
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