[AT] Any Chevy TBI experts

[Doug Tallman]

>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