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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: GUITAR1989 on January 26, 2011, 01:48:52 am

Title: TH375 Wont kick down when accelerating
Post by: GUITAR1989 on January 26, 2011, 01:48:52 am

Hey guys my th375 wont kick down when I stomp on it. How should I go about tracking down the problem?

Title: Re: TH375 Wont kick down when accelerating
Post by: jackjeckel757 on January 26, 2011, 09:13:08 am

when I had that problem, I found my kick down cable on the carb needed to be adjusted.

Title: Re: TH375 Wont kick down when accelerating
Post by: zieg85 on January 26, 2011, 09:34:21 am

I believe the TH375 is an electric/switch operated and adjustment is under the dash.  There is a thread on this, search TH400 Kick down and you should pull it up.

Title: Re: TH375 Wont kick down when accelerating
Post by: GUITAR1989 on January 26, 2011, 03:33:12 pm

thanks man :) Im gonna look for an installation guide. Im not familliare with the way the system works or where all the componants connecting that switch to the tranny are located.

Title: Re: TH375 Wont kick down when accelerating
Post by: zieg85 on January 26, 2011, 03:47:06 pm

http://forum.73-87chevytrucks.com/smforum/index.php?topic=17858.msg142561;topicseen#msg142561  is the thread I was referring to.

Title: Re: TH375 Wont kick down when accelerating
Post by: GUITAR1989 on January 26, 2011, 04:12:52 pm

thanks alot man I must have skipped over that one when I looked earlier. Thars just what I needed to see. If I recall correctly my truck doesnt even have one of those switches on it. hmm this is gonna be a pain since I dont know how the switch links up to cause the tranny to kick down or have one on there to look at and find out. thanks for the help man I gotta go try and figure this thing out  ??? 

Title: Re: TH375 Wont kick down when accelerating
Post by: zieg85 on January 26, 2011, 05:08:47 pm

Assuming your truck originally came with a TH350 that would make sense.  Going to a TH375 is a logical step up without having to change the drive shaft yoke.  I don't know if they make kits, you may have to find a donor truck in a salvage yard to get the wiring from the trans to the switch on the go pedal.