"Stuttering" at the cruise
Discussion
I have a question which I hope someone can assist me with. I have a Cerbera 4.2 '97 and find that on the cruise, not accelerating nor decelerating - just cruising (irrelative of gear) that it "stutters". This is not so major so's to throw me forwards and back in my seat, but certainly enough to feel. Is this normal? If not, what might it be? If it IS normal, then is there any way to "smooth" it out a bit?
Andy seems to know his stuff, and I look forward to the outcome of this weekend's drive over to his place in Liphook.
When accelerating, still goes like the clappers, a real beauty ... just cruising - and like you said earlier - a little annoying more than anything else. If it turns out to be fine according to computer, etc., then that's fine.
When accelerating, still goes like the clappers, a real beauty ... just cruising - and like you said earlier - a little annoying more than anything else. If it turns out to be fine according to computer, etc., then that's fine.
Well I've been to APM on Saturday past, met some top blokes and saw some nice motors. Andy certainly knows his stuff and I'd recommend the place to anyone.
As for the car, still stuttering (throttle pots didn't seem to be the prob) - it seemed two of the cylinders weren't actually firing at all!!! New plug didn't resolve, so I left having to sort out some HT leads and plugs all round as the next stage in trying to identify the problem. Andy reckoned it might be a crank sensor, or the coil packs, but either way should replace ageing HT leads anyway and plugs were not "normal" ones either. Will do plugs 'n leads this week and see how that goes before spending out any more.
The pain in the a*se bit is that I can't drive the car now I know it's not firing on all 8 cylinders, so its off the road until fixed .... BUGGER!!!
>> Edited by cinman on Sunday 27th April 09:42
As for the car, still stuttering (throttle pots didn't seem to be the prob) - it seemed two of the cylinders weren't actually firing at all!!! New plug didn't resolve, so I left having to sort out some HT leads and plugs all round as the next stage in trying to identify the problem. Andy reckoned it might be a crank sensor, or the coil packs, but either way should replace ageing HT leads anyway and plugs were not "normal" ones either. Will do plugs 'n leads this week and see how that goes before spending out any more.
The pain in the a*se bit is that I can't drive the car now I know it's not firing on all 8 cylinders, so its off the road until fixed .... BUGGER!!!
>> Edited by cinman on Sunday 27th April 09:42
Well, I replaced the coil-pack for right-side bank of cylinders (the rear pack) and lo-and-behold ... smoother running straight away? Haven't even done plugs and HT's yet, so it may be even better after that?
As a note, don't attempt to replace the coil pack unless (a)you know what you're doing, and (b) you have the tools to hand. I had neither, but went ahead anyway, and it took me 3hrs - but worth it in the end for the result is brilliant.
With HT leads, they seem to have differing lengths, because some of the new leads I have don't stretch round the cylinder head to the plug ... yikes!
Also, the plugs seem to sit in these deep recesses with very little "room" around them to fit a plug wrench into ... that's why mine haven't been changed yet!
As a note, don't attempt to replace the coil pack unless (a)you know what you're doing, and (b) you have the tools to hand. I had neither, but went ahead anyway, and it took me 3hrs - but worth it in the end for the result is brilliant.
With HT leads, they seem to have differing lengths, because some of the new leads I have don't stretch round the cylinder head to the plug ... yikes!
Also, the plugs seem to sit in these deep recesses with very little "room" around them to fit a plug wrench into ... that's why mine haven't been changed yet!
Yeah, seems to be now. I'm going to get right length HTs this weekend, and get the plugs switched over too (shouldn't take more than half-hour I reckon :-) and it may "clean" up the running even more, even if by a little, or even if by "placebo" effect if nothing else - (plus nice clean leads look nice!)
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