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Can you advise me please on this problem that suddenly occured two weeks ago.

Tiny
ALISTAIR
  • MEMBER
  • 1998 TOYOTA CELICA
  • 127,000 MILES
The celica is a 1.8 st. Uneven and high idle speed, bad surging at low speeds. I had the diagnostic result saying "air bypass idle valve from ecu" this has been replaced but made no difference. Is it possible it is the actual ecu or hopefully something simpler/cheaper? It's doing my head in as the car's been fine up to now.
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Saturday, February 25th, 2012 AT 1:36 PM

1 Reply

Tiny
DRCRANKNWRENCH
  • MECHANIC
  • 3,380 POSTS
I am giving you a walk through diagnsotic on the problem. It is a process of elimination step by step that goes into detail and will help you eliminate other possiblities.
Follow this link;

https://www.2carpros.com/articles/engine-surges
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Saturday, February 25th, 2012 AT 2:32 PM

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