SPONSORED LINKS

Buick Rendevous won't start and idle when it's cold

Tiny
MVESTICH
  • MEMBER
  • 2004 BUICK RENDEZVOUS
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 146,000 MILES
My 2004 Buick Rendezvous will not start and idle on cold mornings. To get it going, I must start the vehicle while keeping the gas and brake depressed and drive for a bit until it warms up and doesn't stall. In other words, I can't warm up the vehicle in the morning. After it warms up, sometimes it idles too high (200 rpms). My mechanic replaced the idle air control, but this didn.T fix the problem. Please help!
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Saturday, January 8th, 2011 AT 7:10 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Clean out the EGR valve and test the throttle position sensor and MAF sensor with an electronic cleaner CRC
Was this
answer
helpful?
Yes
No
Thursday, April 18th, 2019 AT 1:51 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
He should have also scrubbed out the throttle body before changing the IAC but you also need to check for any vacuum leaks.

Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, April 18th, 2019 AT 1:51 PM

Please login or register to post a reply.

Related Engine Not Running Content

How to fix an engine that wont start
VIDEO
How to fix an engine that wont start
Instructional repair video
Engine Not Starting
GUIDE
Engine Not Starting
Over the past 20 years at 2CarPros we have identified the top problems that are easily fixed. This guide can save you a trip to the repair garage or calling a tow truck and...
VIEW MORE

Sponsored links