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1991 Opel Monza Carburetor problem die

Tiny
MPETENI
  • MEMBER
  • 1991 OPEL MONZA
  • 1.8L
  • FWD
  • MANUAL
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.
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Thursday, May 15th, 2014 AT 4:40 AM

4 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
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.
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Thursday, May 15th, 2014 AT 5:05 AM
Tiny
MPETENI
  • MEMBER
  • 3 POSTS
Thanks for the help it work fine after I clean the throttle with carb cleaner.
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Monday, June 9th, 2014 AT 4:06 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
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.
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Monday, June 9th, 2014 AT 4:12 AM
Tiny
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.
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Tuesday, June 10th, 2014 AT 12:01 AM

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