[AT] Any Chevy TBI experts

[charles bridges]

Thanks Doug
I needed that information also.


----- Original Message ----- 
From: "Doug Tallman" <dtallman at accnorwalk.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Saturday, November 05, 2005 10:10 AM
Subject: Re: [AT] Any Chevy TBI experts


> >I have an 89 chevy 4wd 3/4 auto w/ TBI..    at light load, either
starting
> >out, or running at 30-40 mph the engine surges.  It drives me nuts.  Has
> >anyone had this problem or knows how to solve it.
>
> Cecil, try unplugging the EGR valve and see if the surge goes away. You
may
> set an EGR code doing it but it won't hurt anything. The computer checks
to
> see if the EGR is working but it can't tell if it is working too much.
When
> it works too much you get a bog off idle and a surge but no codes. A leaky
> TBI base gskt will cause high idle speed. Another thought is the fuel
> filter. The pump has enough pressure to push through a plugged filter but
> it causes power loss and eventually burns up the pump from being
overworked.
>
>
>
>            Doug Tallman
>            dtallman at accnorwalk.com
>            VGTCOA Ohio Regional Director
>                Greenwich, OH USA
>
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