The colour was brown across all of the plugs, I think the old Haynes manual picture guide states this as normal)
I have quite few good spare parts including the water temperature and possibly an air sensor. Do you think swapping these out is the correct route? Many thanks Trevor On Sep 1, 9:37 pm, Jim Hearne <[email protected]> wrote: > What colour were the end of the plugs ? > > It would depend how the temperature sensor was faulty, (there is also a > air temperature sensor). > If it had failed totally or there was a wiring problem the ecu would > default to cold mode so the car would still start from cold and just be > too rich when warm, though i guess the lambda sensor feedback would > adjust this richness out after a while. > > Jim > > On 01/09/2012 16:11, Critter wrote: > > > > > Hi All > > Update number 2 > > Swapped plugs and leads today, took the car out and found the same > > results. > > The car still judders on partial throttle (almost cutting out) from > > cold and once the engine is warm there is still a flattening of the > > acceleration curve at full throttle, when I back off the throttle > > slightly the car carries on accelerating. > > If it is the ecu temperature sensor causing the problems when cold, as > > suggested by Martin, would this still effect when warm? > > Many thanks > > Trevor > > > On Friday, 31 August 2012 16:57:51 UTC+1, Critter wrote: > > > Yes I think I have a spare set (somewhere) > > > I'll give them a try tomorrow and let you know > > > Many thanks > > > Trevor > > > On Aug 31, 4:36 pm, "Jim Hearne" <[email protected]> wrote: > > > If you've spare plugs and leads it's probably worth swapping them. > > > The misfire on my Mondeo could probably have been classed as a > > hesitation > > > most of time. > > > > Jim > > > > -----Original Message----- > > > From: Critter > > > Sent: Friday, August 31, 2012 3:07 PM > > > To: Quantum Owners Group > > > Subject: [Quantum Owners] Re: Hesitation on acceleration > > > > Hi Jim, > > > > No this has only started happening about 2 or three months ago and > > > from what I remember it just started happening, no gradule fade > > off in > > > perfomance. > > > > The engine is definetely a Fiesta RS1800 130ps all the cams, > > > injectors, MAF etc are as they were. > > > > Do you think it could be just plugs and leads? I could swap > > those out > > > and try. > > > > Many thanks > > > > Trevor > > > > On Aug 31, 2:38 pm, "Jim Hearne" <[email protected]> wrote: > > > > Just to go back a bit, has this car always had this problem > > with this > > > > engine > > > > setup or has it appear gradually or suddenly. > > > > Is it possible the ECU or injectors or cams are mismatched ? > > > > There were 3 versions of the 1.8 Zetec, 2 in the Fiesta and > > Escort (105ps > > > > and 130ps) and another in the Mondeo. (115ps). > > > > All had different ecu's, injectors, MAF and cams and are quite > > often mixed > > > > up if the car has been built from parts from ebay etc. > > > > > The most common Zetec faults are spark plugs, plug leads and > > coil packs, > > > > these all tend to cause varying degrees of misfire rather than a > > > > hesitation. > > > > I had to put a new set of plugs in my Mondeo last week to fix a > > > > intermittent > > > > misfire. > > > > > Jim > > > > > -----Original Message----- > > > > From: Critter > > > > Sent: Friday, August 31, 2012 1:56 PM > > > > To: Quantum Owners Group > > > > Subject: [Quantum Owners] Re: Hesitation on acceleration > > > > > Hi All, > > > > > Ok a bit of an update. > > > > > I have reset the ecu by disconnecting the battery overnight > > and the as > > > > Jim said I let it to tickover until the fan kicked in. > > > > > It appears to have made little difference. I took it for a spin > > > > yesterday when the engine was warm and the slight Hesitation past > > > > 7/8ths throttle was still present a bit like a mid range flat > > spot but > > > > at the top end. > > > > > This morning I went out in the car and from cold the judder > > was still > > > > there. > > > > > Once the car had warmed up I disconnected the MAF sensor and > > as Jim > > > > said it seem to make not a lot of difference. The only > > difference I > > > > could note was that after pulling up at the traffic lights and > > when I > > > > also pulled onto my driveway. The engine momentarily > > struggled to > > > > settle into a tickover i.e. the engine revs hunted very low, > > almost to > > > > stalling before settling down. > > > > > Many Thanks > > > > > Trevor > > > > > On Aug 29, 6:06 pm, "Susan and Martin Scott" > > > > <[email protected]> wrote: > > > > > ISTR the fuel enritchment is via the temp sensor, so if the > > enrichment > > > > > wasn't happening due to poor/no signal reading could this be > > the cause? > > > > > Over to JIm? > > > > > > ----- Original Message ----- > > > > > From: Critter > > > > > To: [email protected] > > <mailto:[email protected]> > > > > > Sent: Wednesday, August 29, 2012 2:53 PM > > > > > Subject: [Quantum Owners] Hesitation on acceleration > > > > > > Hi All, > > > > > > I am experiencing a judder when accelerating away from > > cold on partial > > > > > throttle, including when the outside temperature is mild but > > the engine > > > > > is > > > > > cold. This only last for approx 200 yds (M) If I floor the > > throttle the > > > > > car pulls away fine. I just look an idiot either pulling > > away from home > > > > > like a kangeroo or like a boy racer. > > > > > > When the car is warmed up, acceleration is great from > > partial to > > > > > 7/8ths > > > > > open, but if I open up full throttle it feels like the > > engine is holding > > > > > back, but not miss firing. i.e. Hesitant. > > > > > > I have swopped the Idle control valve for a good spare and > > also the > > > > > throttle position sensor for the same. > > > > > > I was thinking of disconnecting the battery to reset the > > ECU but any > > > > > other suggestions? > > > > > > The car is a H4 with a RS1800 zetec all currently standard. > > > > > > It has done this for a few months now and I have bought > > fuel from > > > > > various garages so I don't think its fuel and as the cold fault > > > > > disappears > > > > > when its warm I don't think its a loose connection. > > > > > > Any suggestions would be gratefully received. > > > > > > Kind regards > > > > > > Trevor > > > > > > -- > > > > > You received this message because you are subscribed to > > the Google > > > > > Groups "Quantum Owners Group" group. > > > > > To post to this group, send email to > > [email protected] > > <mailto:[email protected]> > > > > > To unsubscribe from this group, send email to > > > > > [email protected] > > <mailto:[email protected]> > > > > > For more options, visit this group > > > > > athttp://groups.google.com/group/quantumowners?hl=en > > <http://groups.google.com/group/quantumowners?hl=en> > > > > > > IMPORTANT NOTE: All information presented herewith is > > provided on an > > > > > "As > > > > > Is" basis, without warranty or the implication thereof. > > Neither the > > > > > Quantum Owners Club nor the individuals associated with the > > Quantum > > > > > Owners > > > > > Club or in the preparation of the above information shall > > have any > > > > > liability to any person or entity with respect to liability, > > loss, or > > > > > damage caused or alleged to be caused directly or indirectly > > by the > > > > > instructions contained within this or related message(s). > > > > > ---------------------------------------------------------------------------���--- > > > > > > No virus found in this message. > > > > > Checked by AVG -www.avg.com<http://www.avg.com> > > > > > Version: 10.0.1424 / Virus Database: 2437/5233 - Release > > Date: > > > > > 08/29/12 > > > > > -- > > > > You received this message because you are subscribed to the > > Google Groups > > > > "Quantum Owners Group" group. > > > > To post to this group, send email to > > [email protected] > > <mailto:[email protected]> > > > > To unsubscribe from this group, send email to > > > > [email protected] > > <mailto:[email protected]> > > > > For more options, visit this group > > > > athttp://groups.google.com/group/quantumowners?hl=en > > <http://groups.google.com/group/quantumowners?hl=en> > > > > > IMPORTANT NOTE: All information presented herewith is provided > > on an "As > > > > Is" > > > > basis, without warranty or the implication thereof. Neither > > the Quantum > > > > Owners Club nor the individuals associated with the Quantum > > Owners Club or > > > > in the preparation of the above information shall have any > > liability to > > > > any > > > > person or entity with respect to liability, loss, or damage > > caused or > > > > alleged to be caused directly or indirectly by the > > instructions contained > > > > within this or related message(s). > > > > -- > > > You received this message because you are subscribed to the > > Google Groups > > > "Quantum Owners Group" group. > > > To post to this group, send email to > > [email protected] > > <mailto:[email protected]> > > > To unsubscribe from this group, send email to > > ... > > read more » -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s).
