poor idling and stalling

Aug 11th, 2006, 20:53

i have the s40 1800 year2000 model the revs go up and down slightly the engine a bit rough and sometimes stalls mainly when its warmed up ive had a new coil pack that gave me more power back that ive lost ive also put on a mass air flow meter fitted and a new thottle control switch fitted and ive had the whole thing put on the computor with no faults so can anybody tell me why its still do it

DurhamRed · Aug 11th, 2006, 21:17

I'd go with changing the spark plugs. Sounds like its deffo an ignition fault and the fact it happens more when it is warm suggests a sparking prob.

gnhuk · Aug 11th, 2006, 22:23

Mine does it occasionally - the usual cause is the Idle Air Control Valve and the throttle body being gunked up - a good clean with carb cleaner will improve will improve matters no end. Mine needs another "treatment" but I don't have enough time at present.

The IACV will probably look clean but you'll be surprised how much sh1t there is in the throttle body.

Also if you stand behind it when the idle is rough it'll sound like it's misfiring....

Aug 12th, 2006, 01:26

Quote:

Originally Posted by gnhuk

Mine does it occasionally - the usual cause is the Idle Air Control Valve and the throttle body being gunked up

Gunked up? Would've thought yours gets gnhuk'd up?!

gnhuk · Aug 12th, 2006, 11:14

Quote:

Originally Posted by peteS40

Gunked up? Would've thought yours gets gnhuk'd up?!

Bit too clever for me at that hour of the morning................ couldn't think of a more appropriate term!

Aug 12th, 2006, 20:06

thanks for all your help but my brother who is a machnic told me not to use carb cleaner it s too dry he told me to use brake cleaner

Aug 12th, 2006, 20:10

funny you mentioned the spark plugs i changed them also for ndks yesterday

the great one · Aug 12th, 2006, 20:12

is this 1800 gdi?

Aug 12th, 2006, 20:18

no its 1800 non gdi

Aug 11th, 2006, 20:53	#1
lp004b0247 Guest Location:	poor idling and stalling i have the s40 1800 year2000 model the revs go up and down slightly the engine a bit rough and sometimes stalls mainly when its warmed up ive had a new coil pack that gave me more power back that ive lost ive also put on a mass air flow meter fitted and a new thottle control switch fitted and ive had the whole thing put on the computor with no faults so can anybody tell me why its still do it

Aug 11th, 2006, 22:23	#3
gnhuk Balding............. Last Online: Jun 29th, 2018 10:35 Join Date: Dec 2003 Location: Linslade	Mine does it occasionally - the usual cause is the Idle Air Control Valve and the throttle body being gunked up - a good clean with carb cleaner will improve will improve matters no end. Mine needs another "treatment" but I don't have enough time at present. The IACV will probably look clean but you'll be surprised how much sh1t there is in the throttle body. Also if you stand behind it when the idle is rough it'll sound like it's misfiring.... __________________ Gavin VOC17969 2000 S40 1.8S -with various options (Now sold @135k miles) 2012 S40D3 R-Design

Aug 12th, 2006, 20:06	#6
lp004b0247 Guest Location:	idle air control switch thanks for all your help but my brother who is a machnic told me not to use carb cleaner it s too dry he told me to use brake cleaner

Aug 12th, 2006, 20:10	#7
lp004b0247 Guest Location:	spark plugs funny you mentioned the spark plugs i changed them also for ndks yesterday

Aug 12th, 2006, 20:12	#8
the great one Senior Member Last Online: Jul 5th, 2009 19:50 Join Date: Jan 2006 Location: south	is this 1800 gdi? __________________ skyline r32 gtr vspec 550bhp 500lbs torque and a volvo v40 2.0 cd auto

Aug 11th, 2006, 21:17	#2
DurhamRed Member Last Online: Jul 10th, 2009 21:00 Join Date: Aug 2006 Location: Durham	I'd go with changing the spark plugs. Sounds like its deffo an ignition fault and the fact it happens more when it is warm suggests a sparking prob.

Aug 12th, 2006, 20:18	#9
lp004b0247 Guest Location:	cc no its 1800 non gdi

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