Sticky Throttle
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Fleet Owner
Joined: Mar 2003
Posts: 24,724
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From: Blue Hill Township
Sticky Throttle
As many of you know, sometimes the Expy has a problem with the gas peddle sticking just a little during the first little bit of travel. I fixed mine by taking off the throttle body, cleaning it up real good with some valvoline TB cleaner, and I cleaned up the part that goes between the throttle body and the intake manifold. The truck doenst have the sticky peddle, and it almost feels like it has better throttle response, and maybe a little more power. I think I am just imagining the more power, but the truck feels better. I took some pics of it before and after. If anyone wants, I can put them on a website.
Logistics Pro
Joined: Oct 2000
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From: All over Texas
Originally posted by mistercmk
I thought they didn't reccomend it unless you used a cleaner made just for the coated throttle bodies.
I thought they didn't reccomend it unless you used a cleaner made just for the coated throttle bodies.
New User
Joined: Jan 2004
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From: Grand Rapids, Michigan
I fixed mine by simply cleaning the butterfly valve and inside body where it made contact.
To remove the sticky build up, I used WD40 on a lint free cloth and course sandpaper ((where needed) course sandpaper helped work in the WD40 without fear of loose grit getting away from ya), and keep wiping the excess away.
It would help to have small fingers to get up and in and around the butterfly valve
......
I also hear Premium gas (w/ cleaners added) helps as a preventitive, and then again gas cleaner too. But who wants to wait a couple tanks, eh!
To remove the sticky build up, I used WD40 on a lint free cloth and course sandpaper ((where needed) course sandpaper helped work in the WD40 without fear of loose grit getting away from ya), and keep wiping the excess away.
It would help to have small fingers to get up and in and around the butterfly valve
......
I also hear Premium gas (w/ cleaners added) helps as a preventitive, and then again gas cleaner too. But who wants to wait a couple tanks, eh!
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From: Grand Rapids, Michigan
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Logistics Pro
Joined: Oct 2000
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From: All over Texas
Originally posted by Tough Mama
Got me there, I just heard...
Ask this... what's the varnish build up caused by?
Got me there, I just heard...
Ask this... what's the varnish build up caused by?
New User
Joined: Jan 2004
Posts: 8
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From: Grand Rapids, Michigan
Originally posted by buzzard
If I'm not mistaken, it's not varnish, but more of a carbon deposit.... comes from the EGR valve pumping nasty old, unburned fuel laden, gasses back through the system.
If I'm not mistaken, it's not varnish, but more of a carbon deposit.... comes from the EGR valve pumping nasty old, unburned fuel laden, gasses back through the system.
---> So why select few getting this in their carbs... because of cheap o'l gas!?
Thread Starter
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Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
Here's the pictures of the throttle body. http://mistercmk.servehttp.com/expy/throttle/index.html
