1989 S-10 Blazer 4.3 with High Idle

	Blazer Forum Classifieds Photo Gallery Search Contact BF Sponsors
Blazer News Member List Forum FAQ Timeslips Recalls TSBs Calendars Register Login

1989 S-10 Blazer 4.3 with High Idle

Printable Version

Blazer >> Mechanical & Maintenance >> General Tech Help >> 1st Gen (1983-1994) Tech >> 1989 S-10 Blazer 4.3 with High Idle

Page: [1]

Message

<< Older Topic Newer Topic >>

1989 S-10 Blazer 4.3 with High Idle - 6/26/2008 6:58:50 PM

BigDean

Posts: 1
Joined: 6/26/2008
Status: offline

Hello All... I am having a problem with my Blazer. High Idle on start up and will not come down. I have changed the IAC and I know it is most commonly a vacuum issue, but I can''t find a leak. Any ideas?

_____________________________

BigDean

Post #: 1

RE: 1989 S-10 Blazer 4.3 with High Idle - 6/27/2008 4:02:31 AM

swartlkk

Posts: 13650
Joined: 5/1/2005
From: Waterloo, NY
Status: offline

My first guess would be the throttle body base gasket. Use an unlit propane torch around the base of the TBI unit with the engine running. Listen for a change in the sound the engine is making.

_____________________________

Kyle-