Old Sep 10, 2010 | 03:23 AM
  #21  
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Rune
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Joined: Jul 2009
Posts: 80
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From: South Wales
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Still wrestling with this one

I've changed the fuel filter, ignition module, HT leads and plugs (all new), no problem with it starting now, the pats led is behaving as it should, I think we can rule out an immobiliser issue (correct me if I'm wrong)

I've left it ticking over for 15-20 minutes, doesn't cut out at all and the idling's not the slightest bit rough, but a curious thing, if I drop the bonnet from about a foot up to let it just click shut while the car's ticking over, revs drop away and sounds like it's gonna cut out then it just picks back up right to around 900 where the book says it should idle at

When I drive it, it sort of 'judders', like it's cutting out then kicking back in and a couple of times it's cut out when dipping the clutch. Unlike before though when cutting out it will start back up immediately, without having to leave it standing for a while as I had to at the beginning of this saga

Local garage changed the fuel filter for me and the guy did say that the filter he took off was absolutely filthy, so I'm thinking the pump being full of crap may be an issue (you can hear the pump priming when you turn the ignition key just fine)



Being clueless about cars all I have to rely on is a real small portion of common sense, the way it's cutting out and kicking back in seems most likely to be either some kind of firing problem, or a fuel feed problem

If it was fuel I'd expect it to be 'boggy', sluggish, but it isn't, when it's not displaying the cut out/kick in behaviour it pulls as well as ever, am I right in thinking there'd be a loss of power of if it was feeding insufficient fuel?


If it's not fuel, seems to be it has to be something causing it to intermittently 'not fire', that would explain the cut-out/kick-in behaviour

It's highly unlikely to be the coil, leads or plugs because I've tried previously 'known good' plugs and leads as well as brand new ones. The coil that was on there when all this started happening was probably fubar'd, because as soon as I took that out the starting problem disappeared, and with the brand new one in pats led started winkin at me when it should



Gone as far as I can with my super limited car knowledge and meagre dose of common sense allows, don't even know what tells the ignition module 'you should fire plug blah now'


Any ideas on what I should try looking at next much appreciated



Btw, no idea if it's relevant, but the garage was unable to connect to the car with the diagnostics kit they have, could there be an ecu problem?


Ideas anyone?


Rune
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