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Title: itermitent fault Post by ultima4 on Aug 15th, 2011, 8:30am i went to the battlebridge ford show over the w/end on way there the car started jerking with little responce to the thottle then sudenly pick up and seemed ok .then on the way back same fault it only happened when doing about between 50 and 60 mph 'engine ticks over ok no missfire either.the only other thing that happened was the t.c.s and abs light came on.when i turned engine off and turned back on after ten miniets lights were not on.any idears folks. its a 1998 2.scorpio auto.thanks geoff. |
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Title: Re: itermitent fault Post by Cosray on Aug 15th, 2011, 12:38pm Hi Geoff, looms in good order? Looks like your faults start after a while and then cease, usually because of heating up bad cabling. Especially the one next to the exhaust manifold "engine compartment loom" running from the big grommet in the firewall to the two cubic-shaped connectors and under the ABS module? Very suspect. Also visually inspect a fork coming off this loom near the firewall and up to the three-pin EGR Differential Valve Control Sensor. It sits on its own straight in frornt of the steeringwheel in a RHD. It is the box with the two rubber tubes. The three wires down at the fork are subject to heat and shorting causing EGR to switch on/off at the speeds mentioned injecting exhaustgasses into the inlet manifold. Very suspect. Read here: http://www.fordscorpio.co.uk/egr.htm If that fails do inspect the loom over the injectors for brittle isolation and bad splices. HTH Ray |
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Title: Re: itermitent fault Post by Mike H on Aug 16th, 2011, 2:42pm FWIW mine did that regular until MAF was replaced (as well as filters and cat) No amount of cleaning the MAF made any difference, it was basically kn@ckered.... had just gotten too old I think (?) TCS & ABS lights may be a separate 'issue'.... |
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Title: Re: itermitent fault Post by ultima4 on Aug 17th, 2011, 8:23pm hi guys check wirering seems all ok .im going to fit a new map sensor this w/end as advice.i have cleaned the old one a few times but no joy.anyway thanks for your advice i will see how it goes,cheers geoff |
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Title: Re: itermitent fault Post by Mike H on Aug 18th, 2011, 1:38pm As a quick simple test you can unplug the MAF and try it like that, car will work in open-loop fuelling mode, if that cures the jerking then that's the kiddie at fault (MAF) ;D |
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Title: Re: itermitent fault Post by Cosray on Aug 18th, 2011, 1:53pm Smart check Mike! Good for eliminating and homing in on the culprit. Ray |
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Title: Re: itermitent fault Post by ultima4 on Aug 20th, 2011, 7:22pm HI GUYS.FITTED NEW MAF SENSOR TODAY NEW ONE ON E/BAY 50 QUID TAKEN CAR ON RUN SEEMS OK FINGERS CROSSED. NEX JOB ITS TO CHANGE AUTO OIL AND FILTER ENY ONE RECERMEND THE RIGHT OIL FOR THE JOB.1998 2.3 ULTIMA THANKS FOR ALL YOUR HELP. :) |
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Title: Re: itermitent fault Post by Mike H on Aug 21st, 2011, 6:17pm So there you go http://livinginthepast-audioweb.co.uk/images/misc/th_thumbsup.gif There were or was other topics about auto oil changing, is there instructions in the How To section at all? |
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Title: Re: itermitent fault Post by Simmo on Aug 21st, 2011, 8:25pm Have a look at This page (http://www.fordscorpio.co.uk/aboxfilters.htm) :) |
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Title: Re: itermitent fault Post by Mike H on Aug 22nd, 2011, 12:28pm Oh yeah found that, but sure there were previous topics about it as well (?) |
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Title: Re: itermitent fault Post by MrJones on Aug 24th, 2011, 10:01am Hi, I got the filter and sump gasket and o rings from ford parts UK for £56 including postage. http://www.fordpartsuk.com/shop/ford_scorpio_auto_box_gasketscreen_filter_and_seal_kit_1343.htm Only took 5 days to arrive, that included the weekend. :) Got oil from my local lvw, which was ATF Q- GM Dextron II at £19.99 including VAT for a 4.55 Ltr tub. X2 = £40 |
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