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Escort MPG
Cars Maintenance General car maintenance (uk.rec.cars.maintenance)
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#11
 
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Re: Escort MPG -
05-10-2007
, 05:13 PM
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Iain McLaren wrote: Hi, I seem to be getting poor fuel economy in my Escort ('96 1.6 Zetec). Last time I calculated it, I was getting about 27mpg. I do 25 miles a day, of which 20 is motorway, 3 is rural and 2 is urban. At the MOT all the emissions were spot on, but I have noticed that when I come off the motorway the engine idles at about 1500 rpm for 30 seconds or so before dropping down to normal. Is the economy I'm seeing acceptable? If not, any suggestions what could be wrong (apart from having a crap car!!)? MAF, coolant temperature sensor or O2 sensor. |
not to say that it was fine, but now isnt though...
The 1.6 should manage 35mpg under those conditions though...
Tim..
#12
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Hi, I seem to be getting poor fuel economy in my Escort ('96 1.6 Zetec). Last time I calculated it, I was getting about 27mpg. I do 25 miles a day, of which 20 is motorway, 3 is rural and 2 is urban. At the MOT all the emissions were spot on, but I have noticed that when I come off the motorway the engine idles at about 1500 rpm for 30 seconds or so before dropping down to normal. Is the economy I'm seeing acceptable? If not, any suggestions what could be wrong (apart from having a crap car!!)? |
Tim..
#13
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"Iain McLaren" <iain.mclaren (AT) removethis (DOT) scott-moncrieff.moc> wrote in message news:46433760$0$10733$db0fefd9 (AT) news (DOT) zen.co.uk... Hi, I seem to be getting poor fuel economy in my Escort ('96 1.6 Zetec). Last time I calculated it, I was getting about 27mpg. I do 25 miles a day, of which 20 is motorway, 3 is rural and 2 is urban. At the MOT all the emissions were spot on, but I have noticed that when I come off the motorway the engine idles at about 1500 rpm for 30 seconds or so before dropping down to normal. Is the economy I'm seeing acceptable? If not, any suggestions what could be wrong (apart from having a crap car!!)? I'd be more inclined to check for soft tyres, binding brakes etc first. Tim.. |
I changed the plugs and airfilter at the weekend (plugs were shot, filter
was a bit grubby-looking), so I'll see if that helps.
I noticed this morning that the temperature gauge only rose past 1/4-hot
when I got stuck in traffic (a fairly rare occurence) so maybe the
thermostat is sticking a bit. I had a Cavalier SRi a few years ago, and
changing the one on that just about doubled my fuel economy.
This issue with the revs staying high seems to have got worse as well - it
took a good 2 or 3 minutus to fall from 1,500rpm to ~500rpm today. It never
used to do that (the car's been in family from new). The garage said the
throttle position sensor might be sticking when I mentioned it to them a
while ago. Can they be cleaned/freed, or is a replacement one in order?
Cheers,
Iain
#14
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I noticed this morning that the temperature gauge only rose past 1/4-hot when I got stuck in traffic (a fairly rare occurence) so maybe the thermostat is sticking a bit. I had a Cavalier SRi a few years ago, and changing the one on that just about doubled my fuel economy. |
The needle should be dead in the center of NORMAL or just to the left when
fully warmed up and should be able to maintain this moving or not.
I would definately change the thermostat before going any further..
Tim.
#15
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I would definately change the thermostat before going any further.. |
head, in a black box that's bolted on to the side of the head with various
radiator hoses and a temperature sensor poking out the top.
#16
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Tim.. wrote: I would definately change the thermostat before going any further.. Might be worth pointing out that it's located to the right of the cylinder head, in a black box that's bolted on to the side of the head with various radiator hoses and a temperature sensor poking out the top. |
Do I need to get any other 'bits' - eg seals, 'o' rings etc?
Cheers,
Iain
#17
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"Sandy Nuts" <not (AT) forme (DOT) com> wrote in message news:6y%1i.19015$Ro3.11781 (AT) text (DOT) news.blueyonder.co.uk... Tim.. wrote: I would definately change the thermostat before going any further.. Might be worth pointing out that it's located to the right of the cylinder head, in a black box that's bolted on to the side of the head with various radiator hoses and a temperature sensor poking out the top. Thanks guys - I'll try and get round to it at the weekend :-) Do I need to get any other 'bits' - eg seals, 'o' rings etc? |
the old one is too crusty / breaks.
Tim..
#18
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Do I need to get any other 'bits' - eg seals, 'o' rings etc? Yes, - usually the thermostat comes bare- no o-ring included, and invariably the old one is too crusty / breaks. |
I took a closer look at the temp gauge this morning (got a clear run down
the motorway today). It rose fairly quickly, but stopped just before the 'N'
of 'Normal'. Looks like it's knackered...
Cheers,
Iain
#19
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"Tim.." <the.farm.no (AT) spam (DOT) btinternet.com> wrote in message news  r6dnet1KvUxytTbnZ2dnUVZ8vydnZ2d (AT) bt (DOT) com...Do I need to get any other 'bits' - eg seals, 'o' rings etc? Yes, - usually the thermostat comes bare- no o-ring included, and invariably the old one is too crusty / breaks. I've ordered one this morning - £9.99 including the o-ring. I took a closer look at the temp gauge this morning (got a clear run down the motorway today). It rose fairly quickly, but stopped just before the 'N' of 'Normal'. Looks like it's knackered... |
temperature to work properly/ give good fuel economy. 10 years ago, that was
around about 95-100deg C. I notice today that BMW's latest twin turbo 3l
six is specified to run at 106deg C.
Tim.
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