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kh laser 1.8 sohc idle surge 

 

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 Post subject: kh laser 1.8 sohc idle surge
Posted: Sat Jul 10, 2010 9:01 pm 
Parts Gopher
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Age: 27

Posts: 52

Joined: 12th Nov 2004

Ride: 82 ltd 351 / 82 ghia 351

Power: 80 rwkw

Location: sunbury
VIC, Australia

Hi guys

I'v just bought a first car for my brother, a 1991 ford laser s 1.8 sohc efi

now i absolutely love the car, almost dont want to give it too him haha



but i do have a single issue, the engine will randomly hunt/surge from idle

makes 1/10th of f**k difference when driving but when your at the lights or puttering around its really annoying and embarrasing

will idle fine at around 1000 rpm or so, and will jump up to 1800-2000rpm for no reason

is this common? easy fix?


previous owner said it was the airflow meter but i fail to see how this would affect it enough at idle
i was more thinking coolant temp or soemthing?

does the ecu have a self diagnosis function? if so how do i read the codes etc?
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 Post subject: Re: kh laser 1.8 sohc idle surge
Posted: Fri Feb 18, 2011 8:23 pm 
Fordmods Newbie
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Age: 47

Posts: 16

Joined: 22nd Jan 2011

Ride: bf xr6 and xr fg 50th anniversay

Location: orange
NSW, Australia

it sounds like airflow meter do a quick test unplug it as see how it behaves
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