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        General >> Problems >> idle problem
        
(Message started by: pedropedro on May 27^th, 2006, 4:16pm)

Title: idle problem
Post by pedropedro on May 27^th, 2006, 4:16pm

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

Title: Re: idle problem
Post by scorpio_man on May 27^th, 2006, 4:19pm

hi there

it's just behind the throttle body on the intake manifold. clean it like this.... http://www.fordscorpio.co.uk/cgi-bin/yabb/YaBB.pl?board=Problems;action=display;num=1141740711

hth

Title: Re: idle problem
Post by pedropedro on May 27^th, 2006, 4:59pm

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

Title: Re: idle problem
Post by scorpio_man on May 27^th, 2006, 5:04pm

hi there

sounds like it. it's number 2 on page 3 of this.... http://www.fordscorpio.co.uk/manual/engines/dohc2_3/2300CylHdRnew.pdf

hth

Title: Re: idle problem
Post by pedropedro on May 27^th, 2006, 5:09pm

tks....hope it sorts it

Title: Re: idle problem
Post by pedropedro on May 27^th, 2006, 8:12pm

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

Title: Re: idle problem
Post by Simmo on May 28^th, 2006, 5:16am

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.

Title: Re: idle problem
Post by Octavian_P on May 28^th, 2006, 10:07am

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 ;)

Title: Re: idle problem
Post by scorpio_man on May 28^th, 2006, 1:37pm

hi there

a faulty lambda sensor can do the same thing. what is your milage? they can start failing from about 80K miles.

hth

Title: Re: idle problem
Post by pedropedro on May 28^th, 2006, 3:00pm

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