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Author Topic: lumpy idle and popping  (Read 686 times)

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baldy

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lumpy idle and popping
« on: 09 November 2011, 08:58:01 »
fitted new plugs other day and the bus ran like tractor 1 quick check later 1duff plug replaced ,runs slightly better idles around 7-800with regular pops paperclip test shows MAF volt low,AICV volt low &hall sensor volt high any ideas,back up today to strip and clean all vac pipes &inductionsystem.    Give me a set of 40s any day.
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amba

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Re: lumpy idle and popping
« Reply #1 on: 09 November 2011, 09:04:34 »
Did you torque all the plugs down to 25nm :) as might find 1 is not totally sealed and causing back firing through gap.

Does it only run rough from cold and then smooth out ?
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Lazydocker

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Re: lumpy idle and popping
« Reply #2 on: 09 November 2011, 09:26:41 »
If it was running properly before the work you need to check everything you touched. I'm guessing that you disturbed something when moving the cable tray ;)
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Kevin Wood

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Re: lumpy idle and popping
« Reply #3 on: 09 November 2011, 10:01:52 »
Popping normally means a lean mixture. Check carefully that you haven't introduced an air leak. :y
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baldy

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Re: lumpy idle and popping
« Reply #4 on: 09 November 2011, 10:10:49 »
All plugs tight ,rechecked everything in areas i was in includin openin cable tray to check wires and assosiated plugs but will recheck when up today.Will clean &check all vac pipes and connections.    cheers  Baldy
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maracus

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Re: lumpy idle and popping
« Reply #5 on: 09 November 2011, 11:25:28 »
I had a similar combination of fault codes on a different vauxhall a while ago.. The hall sensor being the one at fault knocking everything else out of sync throwing up 3+ faults.

...if that helps???
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JamesV6CDX

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Re: lumpy idle and popping
« Reply #6 on: 09 November 2011, 16:54:42 »
Plug leads crossed?
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