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Topic: idle problem (Read 508 times) |
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pedropedro
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Posts: 677
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idle problem
« on: May 27th, 2006, 4:16pm » |
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i have a 2.3 16v scorpio ...in drive when stationery it settles at around 800rpm then after approx 20 secs there is a sound like a solenoid closing and the revs drop with a jump by 200 rpm approx..it then hangs in at 600 rpm lumpy....Ive cleaned the maf unit ....any help appreciated....not sure where the idle control valve is but maybe thats something to do with it ??
in neutral its slightly worse...also A/C turned off its not the compresor coming in
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pedropedro
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Posts: 677
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Re: idle problem
« Reply #2 on: May 27th, 2006, 4:59pm » |
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just so I am clear is it the metal unit x2 bolts screwed onto the black unit behind the throttle unit immediately by the side of the x2 vac lines ...i cant seem to find a pic or dwg of the unit
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pedropedro
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Re: idle problem
« Reply #4 on: May 27th, 2006, 5:09pm » |
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tks....hope it sorts it
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pedropedro
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Posts: 677
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Re: idle problem
« Reply #5 on: May 27th, 2006, 8:12pm » |
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problem not solved by cleaning idle valve...i think problem is because fuel is not pressurised,,,there is no hiss from the filler cap when undone...it is a tight fit...any ideas where to start on this problem
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Simmo
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I'm an OAP !
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Re: idle problem
« Reply #6 on: May 28th, 2006, 5:16am » |
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Try looking at this diagram. I think in the past there have been problems with the tank sender unit not sealing but any loose or dodgy connection could cause a leak.http://www.fordscorpio.co.uk/evapmonitor.htm.
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Octavian_P
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Posts: 1126
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Re: idle problem
« Reply #7 on: May 28th, 2006, 10:07am » |
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When i open the fuel tank it doesn't hiss .....but it works good. I had a verry obscure problem with the IACV, i thought was clean, but it wasan't working.....about fourth time of cleaning and oiling it did the magic 
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2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
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scorpio_man
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Ford Kuga awd
Posts: 5654
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Re: idle problem
« Reply #8 on: May 28th, 2006, 1:37pm » |
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hi there
a faulty lambda sensor can do the same thing. what is your milage? they can start failing from about 80K miles.
hth
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pedropedro
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Posts: 677
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Re: idle problem
« Reply #9 on: May 28th, 2006, 3:00pm » |
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its done 100k miles......not sure of function of lambda sensor or where it is.....
have recleaned the idle valve and also i suspect filler cap isnt sealing tight enough ......its running better ...think i will leave it as it is ...
tks for all the help..appreciated
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