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Topic: Idle problem (Read 601 times) |
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Glyn
Full Member
Now an OAP ! 95 cossie and another !and a 12v
Posts: 584
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Idle problem
« on: May 30th, 2011, 12:16pm » |
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My 1995 Cossie has developed surging on tickover. This only occurs as it is warming up and the revs drop to final tickover about 750. The revs oscillate about 650 to 800 but settle when properly hot with only minor fluctuation.
This is annoying when sat at traffic lights as it surges at the resonant frequency of the suspension and the car bounces up and down enless I knock it into neutral. Fortunately I dont get seasick !
The garage have failed to solve it and I have replaced the idle air control valve and cleaned the MAF. The garage suggest a new MAF but I am wary since they originally were positive it was the IAC valve.
If I disconnect the MAF the tickover immediately steadies.
Do I really need a new MAF or is there another likely cause ? 
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Highlander
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Expert
13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
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Re: Idle problem
« Reply #1 on: May 30th, 2011, 12:22pm » |
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on May 30th, 2011, 12:16pm, Glyn wrote:| If I disconnect the MAF the tickover immediately steadies |
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I think you have answered your own question 
Was it yourself that had wiring issues recently? possibly wiring
Try swapping it with a known working MAF just to double check?
Might be another 24v member near you? Where are you?
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on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy!  |
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Glyn
Full Member
Now an OAP ! 95 cossie and another !and a 12v
Posts: 584
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Re: Idle problem
« Reply #2 on: May 30th, 2011, 12:33pm » |
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Thanks. Yes it was me with wiring probs. Newloom fitted cured it good local auto-electrician Ford trained .I'm in Manchester.
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