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Topic: Intermittent rough idle 24v (Read 897 times) |
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Kristian
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I'm a YaBB newbie!
Posts: 6
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Intermittent rough idle 24v
« on: Jun 1st, 2012, 12:23am » |
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Hey all,
For about a year I have been experiencing occasional rough idle. Idle runs between 400-800 rpm and jerks the car when stopped at a light. When it is really bad I have to put the transmission in neutral. The car has about 116000 km on the odometer.
The problem only occurs once in a while (a couple of times one day and then nothing for a week) which leads me to think that it is not a problem with vacuum hoses or such. I have checked all the rubber hoses and they seem fine. Also, the car doesn't seem to lack power. It can happen with the engine cold or warm.
However, I did get a diagnostic reading that said the engine was running lean.
Could it be a bad sensor or sticky solenoid problem??
But then wouldn't the diagnostics tell me of any faulty sensor?
Thanks.
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Simmo
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Posts: 5508
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Re: Intermittent rough idle 24v
« Reply #1 on: Jun 1st, 2012, 6:04am » |
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Have a read of This. 
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Now I'm an OAP
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Matt
Senior Member
Manual'd and a 4.0 in the making
Posts: 2816
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Re: Intermittent rough idle 24v
« Reply #2 on: Jun 1st, 2012, 8:59am » |
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check the idle valve under the cover at the back of the engine to
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FDS2000 Scans - Birmingham
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Kristian
Newbie
I'm a YaBB newbie!
Posts: 6
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Re: Intermittent rough idle 24v
« Reply #3 on: Jun 10th, 2012, 8:45pm » |
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** UPDATE **
I cleaned the MAF and also checked the IACV. The idle still runs rough sometimes. So no change.
When I remove the IACV when the engine is idling badly the problem seems to go away. So I will try to get a new IACV and see if this really is the problem.
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Mike H
Senior Member
Renault Clio
Posts: 2594
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Re: Intermittent rough idle 24v
« Reply #4 on: Jun 11th, 2012, 12:28pm » |
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Have we checked vacuum hoses yet? Even a weak joint or small crack can be difficult to spot on cursory inspection and there's a 'T' junction (or two) that is a known problem on the 24V. (?) (From what I've read here anyway  )
I only mention it as there was another topic recently about rough running as it was vacuum hoses IIRC.
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Mike H
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