I have an 88 GMC vandura van. When it starts up it idles high and wont kick down. also most times when driving it will shift, but it wont kick down. Any ideas?
2006-07-03 07:26:21 · 5 answers · asked by bostic6879 1 in Cars & Transportation ➔ Maintenance & Repairs
check the idler
2006-07-03 07:30:28 · answer #1 · answered by Munch 4 · 0⤊ 0⤋
Sounds like your electric choke cap is bad or not set properly. When the engine is cold the choke cap should close the butterfly in the carb. all the way. And when started and ran for a while it gradually opens up if properly adjusted.
2006-07-03 16:30:11 · answer #2 · answered by Iknowthisone 7 · 0⤊ 0⤋
adjust the fast idle cam on the carburator not the idle speed control but the Fast Idle Cam it has notches that the screw hooks to
2006-07-03 07:31:47 · answer #3 · answered by native 6 · 0⤊ 0⤋
try your pcv valve... its a quick an easy fix and is common for high idles.. it can be a number of things tho... make sure all your vaccuum tubing is intact... air filter is clean... when is the last time you had a tune up?
good luck
2006-07-03 07:32:36 · answer #4 · answered by nino 2 · 0⤊ 0⤋
check the idle set screw..but don't mess with it. i'd say it's the electronic choke. make sure the connection on the carb is clean, and check fuses. i had problem with this on my edelbrock
2006-07-03 07:31:53 · answer #5 · answered by Ryan 4 · 0⤊ 0⤋