1991 Opel Monza Carburetor problem die

1991 OPEL MONZA
1.8L • FWD • MANUAL
Avatar
MPETENI
  • MEMBER
  • 3 POSTS
My Opel Monza 1.8 has a problem with idle ling. It starts fine sometimes but when its cold I must keep my foot on the petrol(gas), and if I take it off it switch off. This never happen before as now it happen even when the engine is hot.Please help me I'm in South Africa.
May 15, 2014 at 4:40 AM
Advertisement
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
We don't have that vehicle here but here are some general recommendations.

First eliminate all vacuum or air leaks in the system. You may have a bad IAC ( idle air control) but try cleaning the throttle body first. 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. If it still has a problem, replace the IAC.
May 15, 2014 at 5:05 AM
Avatar
MPETENI
  • MEMBER
  • 3 POSTS
Thanks for the help it work fine after I clean the throttle with carb cleaner.
Jun 9, 2014 at 4:06 AM
Avatar
WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
Those recommendations mainly apply to a fuel injected engine which I suspect this is. We have not had any carbureted engines here in the US since the early 80s.
Jun 9, 2014 at 4:12 AM
Avatar
MPETENI
  • MEMBER
  • 3 POSTS
No I have carburetor engine but they worked just fine. Now I can even start my car from outside and I did a minor service on Saturday(plugs,oil fitter,petrol filter, air filter and grain old oil.
Jun 10, 2014 at 12:01 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.