when starting, engine reaches warm-up idle, then stalls.

1996 OPEL ASTRA
193 MILES
Avatar
ALISONGRAVES
  • MEMBER
  • 1 POST
After the engine is started, the idle goes to normal-then the idle gets thready and goes up and down radically and stalls. The problem is getting worse and more frequent; used to only happen every 10 times starting and stalling was not expected- now every time the car is started the stalling happens.
Once the engine is running for 10 mins or more and the engine is warm the problem ceases and the car runs fine.
Had a mechanic look at it; he said maybe the high idle valve? but then changed his mind,,, he said he ordered a part (a hose) and replaced it- he didn't charge me and it worked for 1.5 months then back to its old ways again.
thanks.
Sep 4, 2012 at 5:52 AM
Advertisement
Avatar
KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
Are there any trouble codes? If the hose had worked for some time, recheck to see if it is loose or dislodged. Any vacuum leakage can cause such problems and so does dirty idle control system components.

Try cleaning the throttle body and IAC valves to see if they make any differences.
Sep 4, 2012 at 11:10 AM
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 Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.