1985 Corvette Idle Adjustment. Oct 10, 2005 · Adjust both idle mixture screws equally inw

Oct 10, 2005 · Adjust both idle mixture screws equally inward to obtain 700-750 rpm for manual transmissions or 550-600 rpm for automatics (in Drive). These steps apply specifically to the 1985 model year, and in general to other years. To set timing, disconnect the EST wire to disable electronic spark advance, allowing manual timing adjustment. C. Later model years do not have adjustable TPS's. Test the IAC, and zero the TPS sensor. By using the outlined procedures you will obtain the proper adjustment between the throttle positioning sensor, distributor timing and the throttle body accelerator cable. after putting plugs in it the idle stays decent for a while but shortly after it idles rough. thanks Fast-idle adjustments shown in this video can be used on all GM vehicles equipped with Quadrajet or Dualjet carburetors. 500 $ 949. ekipbvc
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