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[GMCnet] 950 RPM idle in drive. [message #323459]

Wed, 06 September 2017 19:07

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

Karma: 11

Senior Member

Howell with a GM 454 TB, and spark control. Drove it down the street. Seemed to run out of gas once. Might have been an air pocket from somewhere. Need to make the throttle arm longer. As the pedal pressure is a little high. So how do you lower the idle? Bob Dunahugh
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Re: [GMCnet] 950 RPM idle in drive. [message #323462 is a reply to message #323459]

Wed, 06 September 2017 20:25

RF_Burns

Messages: 2276
Registered: June 2008
Location: S. Ontario, Canada

Karma: 3

Senior Member

Bob,
I have the EBL on my EFI now, but the Howell seemed to be a bit finicky about the throttle sensor setting. Here is a link that might help you. It should relate to the 454 TB as well.

http://www.gmcmidwestclassics.org/Web%20pages/Tuning%20the%20TBI.pdf

Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

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Re: [GMCnet] 950 RPM idle in drive. [message #323465 is a reply to message #323459]

Wed, 06 September 2017 20:48

jimk

Messages: 6734
Registered: July 2006
Location: Belmont, CA

Karma: 9

Senior Member

Drive it litttle more as the computor will start learning.

On Wed, Sep 6, 2017 at 5:07 PM, Bob Dunahugh wrote:

> Howell with a GM 454 TB, and spark control. Drove it down the street.
> Seemed to run out of gas once. Might have been an air pocket from
> somewhere. Need to make the throttle arm longer. As the pedal pressure is a
> little high. So how do you lower the idle? Bob Dunahugh
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502

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