1996 Buick Lesabre Engine High RPM's After Starting in Cold

1996 BUICK LESABRE
146,000 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
BILLB13
  • MEMBER
  • 1 POST
In cold weather, my 96 Lesabre has high RPM's until the engine warms up. This can take 10 - 15 minutes. I have a 98 Leasbre that does not do this, and the 96 didn't do this until the last 2 winters. What causes this? Could this be the thernostat?
Nov 1, 2008 at 1:13 AM
Avatar
BLACKOP555
  • ✓Experienced Mechanic
  • 10,386 POSTS
try disconnecting the battery overnight, rehook the next morning and try to start.

check the engine coolant temp sensor or the intake aire temp sensor they can affect the idle speed.
Nov 1, 2008 at 3:26 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle