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        General >> Problems >> idling prodlems
        
(Message started by: invernessguy on May 6^th, 2005, 9:49am)

Title: idling prodlems
Post by invernessguy on May 6^th, 2005, 9:49am

hi, i have a 2.3 which is causing me problems... it seems to drive all right, but when i take my foot off the throttle, it decides to rev up to between 2000 and 3000 revs. took it to my local garage, and he said, take it to someone with a computer, i dont understand it. He did a 5 min look under the bonnet, said, its not mechanical, its gotta be a sensor.

SO, i tried to take it to "someone with a computer."

Went to local bosch diagnostic centre, they said, we cant lok at it till the last week in May? Confused, i went to the next garage on my list... He said, the bosch centre only have a cheap error code reader, and they wouldnt know how to work it anyway? And, he wont be able to look at it for a month, cos he is far too busy??

I retired home for a cuppa, and decided to phone around... Ford, yes, we can do it at the end of next week, we are very busy, so we will only charge you 75 + vat????

Nobody else seems to be able to read codes so what am i to do?

does anyone recognise the symptoms? anyone seen it before? car "sticks" at high revs, then drops down in stages, but doesent go under 12-1300 revs, as such, when you stop at traffic lights, your idling may be 3000... not what you want!!

Oh, before someone asks.. its a manual gearbox, so i can control it a bit better!

All replies and help appreciated I am so annoyed with the service of the garages, it seems like a licence to print money having a "computer"

Title: Re: idling prodlems
Post by Simmo on May 6^th, 2005, 10:05am

The first thing to check would be the MAF. Sometimes a simple clean will solve this sort of problem. Suggest you go the 'Home' page scroll down to 'search' and enter MAF. That should give you advice on how to clean it. A simple task.HTH Simmo

Title: Re: idling prodlems
Post by invernessguy on May 6^th, 2005, 10:07am

i cleaned the maf several weeks ago, cant see it needing done again already??? it was probably never done before?

Title: Re: idling prodlems
Post by scorpio_man on May 6^th, 2005, 10:08am

hi there

it does sound like a sensor, maybe the tps. you can check taht with a meter. i can't remember the voltage (5 volts?)but it should be a smooth curve up or down. while you're there give the throttle housing a clean. see http://www.fordscorpio.co.uk/cgi-bin/yabb/YaBB.pl?board=Problems;action=display;num=1104320107;start=

also take the idle bypass valve off (2x8 or 10 mm bolts) and clean it out. i should say, do all of them with carb cleaner. hell, clean the MAF as well! you'll have them all off anyway!

see how you get on with that.

Title: Re: idling prodlems
Post by invernessguy on May 6^th, 2005, 10:11am

ok, im a dummy, i can follow instructions, but whats tps? and where is it? Thanks by the way, Seems like a better answer than i have got from 7 different garages, whao all wanted a large slice of my cash!

Title: Re: idling prodlems
Post by Simmo on May 6^th, 2005, 10:15am

Throttle position sensor. Look under search as suggested. All sorts of info but S Man will probably beat you to it with an answer.

Title: Re: idling prodlems
Post by scorpio_man on May 6^th, 2005, 10:17am

sorry :-[

http://www.fordscorpio.co.uk/16vcomponents.htm

a is the idle valve
b is the Throttle Positioning Sensor

http://www.fordscorpio.co.uk/ccmonitor.htm

http://www.fordscorpio.co.uk/tpsdata.htm

http://www.fordscorpio.co.uk/iacvdata.htm

i've just seen that you can check the MAF with a meter as well.
http://www.fordscorpio.co.uk/mafdata.htm

the 2.3 location and shape of the sensors are a wee bit different, but are not that hard to find.

Title: Re: idling prodlems
Post by invernessguy on May 6^th, 2005, 10:19am

thanks guys, am going to retreat to the garage in a few mins, so any fianl words of wisdom before i do will be appreciated. Sounds like a very good idea, to clean it all out, i took the air intake pipe off for a look, the throttle butterfly looked spotless from the air side, and i checked it was opening and closing ok, but i didnt look any further into the depths of the engine

Title: Re: idling prodlems
Post by invernessguy on May 6^th, 2005, 10:20am

BRILLIANT!! i love pictures, thanks scorpio man, its just what a dummy like me needs, im brave with a set of spanners, but i dont have a clue really :P

Title: Re: idling prodlems
Post by scorpio_man on May 6^th, 2005, 10:26am

hi there

i never took my throttle body off. i just held the butterfly open and sprayed into it! :o then cleaned with a rag. phil waller did the full thing and is now getting 36mpg+ on the m/way!

i've got lpg so never bothered. up to your self. if you do mod it, make sure everythings clean before refitting. ;)

Title: Re: idling prodlems
Post by Chad66 on May 6^th, 2005, 10:35am

Just to throw my thoughts in here...

Before the Scorp I had a 2.0 litre MkIII Granada which had the exact symptoms as this. It would happily 'tick over' at 3000rpm.

Cleaning the Idle Air Control Valve helped and I eventually replaced it with one out a scrapper which solved the problem completely.

HTH

Title: Re: idling prodlems
Post by invernessguy on May 6^th, 2005, 10:43am

thanks for your help guys, im away out to the garage to have a wee look, and see what i can do,

donnie

Title: Re: idling prodlems
Post by invernessguy on May 9^th, 2005, 1:21pm

ok guys, i took the maf off, and cleaned it again, cleaned the air pipe to the throttle, cleaned the wee sensor in the air pipe, gave the throttle body as good a clean as i could, then took the air idle control valve off, and gave that a squirt too, stuck it all back together, and all seems the same, not much difference.

any other ideas, most of the diagnostic garages here wont touch it, i had a mobile guy coming round today, who is a friend of a friend but when he heard it was a scorpio, he said, NO WAY, im not doing that, its too complicated??? surely its just a matter of reading off some codes?

I really cant afford to take it to ford, HELP!!

Title: Re: idling prodlems
Post by Dave on May 9^th, 2005, 1:36pm

Do you have cruise control? (there is a point to me asking ;D)

Title: Re: idling prodlems
Post by invernessguy on May 9^th, 2005, 2:00pm

yes, but the cable is loose, i see your point, but ive checked that out already!

Title: Re: idling prodlems
Post by invernessguy on May 9^th, 2005, 2:03pm

one question, if i unplug the air idle control valve with the engine running, should i notice a differnece in idle speed? there is no difference with it plugged in or not??

Title: Re: idling prodlems
Post by bigmaltwo on May 11^th, 2005, 2:44am

my guess is the good old idle speed control valve needs a good clean. quite a common problem on all of henry's finest. granada's seem to have more than their fair share though! dont ask how i know! too much time spent, and too little patience left!

Title: Re: idling prodlems
Post by Eddie on May 11^th, 2005, 6:42pm

Idle air valve, if cleaning it doesnt fix it then it may be duff.
If you remove it but leave it connected electrically,block off the hole left on the throttle body. Start the car on a light throttle, (get someone else to to do this while you watch the control valve workings), then release the throttle,the idle valve should open to compensate, not much . Then have all electrical bits,heater fan max, headlights, windscreen deicers etc. More movement can (should) be coaxed out of the valve.

Have good look at all the various vacuum pipes for leaks etc.

eddie

Title: Re: idling prodlems
Post by invernessguy on May 11^th, 2005, 8:53pm

thanks guys, am away out to try that now... by the way, is the air valve the same on all scorpios? will a 2.0 or 2.9 one do to swop to see if its faulty?
or is it the same as other fords?, theres not many scorpios here, but lots of galaxys ans mondoes, could maybe coax someone to let me swop it over for 10 mins ;)

Title: Re: idling prodlems
Post by invernessguy on May 11^th, 2005, 9:33pm

air valve seems sticky, although there is enough spring on it, i think that is probably the problem.will try and get another one to test it before i buy a new one
cant find any leaks in any air pipes, etc, and dont see any movement when i try the throttle test.