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        General >> Problems >> how do you clean the maf sensor on a 2.9 12v
        
(Message started by: madalaine123 on Oct 25^th, 2006, 5:31pm)

Title: how do you clean the maf sensor on a 2.9 12v
Post by madalaine123 on Oct 25^th, 2006, 5:31pm

i am having a problem with my scorpio it's a 2.9 12 valve it's having trouble with reverse mostly when it's cold and it really rams it in 3rd and 4th again this is worse when it's cold i am pretty sure that the maf sensor needs cleaning but the instructions on cleaning the maf sensor is for all the other engine types 16v and 24v and so on if anyone could point me in the right direction i would be very grateful.

ps. this site is absolutely fantastic

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by RichardMS on Oct 25^th, 2006, 5:33pm

The 12V hasn't got a maf.
Someone will be along with some ideas though. :)

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by Highlander on Oct 25^th, 2006, 6:04pm

sounds like it needs a Gearbox oil and filter change

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by madalaine123 on Oct 25^th, 2006, 6:18pm

i am having problems with the running of the car as well. the revs are fluctuating which you hardly notice when you drive the car but it's probably the same problem. I thought that all i needed to do was clean the maf sensor but it seems there isn't one. I am starting to get a bit worried now because i can't afford to spend much money it would be a shame to sell this car coz i like it so much

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by RichardMS on Oct 25^th, 2006, 6:24pm

Where are you, Perhaps there is someone near you that can help.

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by madalaine123 on Oct 25^th, 2006, 6:34pm

hi i am in hatfield in hertfordshire near st albans and welwyn garden city the thing is i can't afford to pay someone to look at it i was wondering if there is a sensor in the induction of the engine because it looks like there is but i didn't want to take it out and look at it before i got some advice on this matter i have also noticed that the car runs cold as well i thought that this would be down to the thermostat maybe this is all the same problem i just don't know

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by RichardMS on Oct 25^th, 2006, 6:37pm

When I said for someone to have a look I meant a member, I don't think anyone would charge for helping a fellow member out, You are too far from me i'm affraid.
You could try cleaning the ICV for the bad idle, as for the bad gear changes it could be the soleniods in the box, what state is the gear oil in and how many miles has the car done.

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by madalaine123 on Oct 25^th, 2006, 6:44pm

that's a shame you're too far away i really appreciate your offer though. I think i am going to change the gearbox oil and filter and see what happens then coz i don't think that will cost me very much

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by RichardMS on Oct 25^th, 2006, 6:49pm

on 10/25/06 at 18:44:56, madalaine123 wrote:

I think i am going to change the gearbox oil and filter and see what happens then coz i don't think that will cost me very much

You may have a suprise there, Perhaps some others will come to you're rescue yet :)

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by madalaine123 on Oct 25^th, 2006, 6:56pm

hi i was wondering what the icv sensor is and how i go about finding and cleaning it thanx

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by Dave on Oct 25^th, 2006, 7:17pm

Hi Madalaine,

from memory on the 12v it is near the front of the engine, attached to the inlet (large silver gubbins to you and me). The idle valve is a silver cylinder held on by 2 10mm bolts and has 1 electrical connection on the end.

Remove the plug and the 2 bolts, take care of the gasket unless it is in poor condition then you will need a new one. Spray carb cleaner into the valve until it is clean inside. Refit, but do not ovetighten as the bolts are going into alloy.

Hope this helps :)

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by Dave on Oct 25^th, 2006, 7:21pm

PS This auction has a good picture that shows you what the valve looks like:

http://cgi.ebay.co.uk/Ford-Sierra-XR4x4-XR-4x4-2-9i-Idle-Speed-Control-Valve_W0QQitemZ110045590075QQihZ001QQcategoryZ21654QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by RichardMS on Oct 25^th, 2006, 7:25pm

ICV = Idle Control Valve, Two 8mm headed bolts to remove it, not sure where it is on the 12V.
You take it off and squirt some carb or brake cleaner in it, wait for a few minutes and shake out whats left in there then let it dry out, give it a squirt of WD40 and then put it back on the car.
Here is a link that may help out,
http://www.fordscorpio.co.uk/pooridle.htm
The ICV on all the engines looks very similar, Another problem you may have is an air leak :-/

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by Dave on Oct 25^th, 2006, 7:30pm

Another point, have you checked the gearbox oil in the right way?

You need to go for a drive of a few miles. Then park up but leave the engine running. Run the selector through all gears 3 times, pausing in each gear (i.e. P, R, N, D, 3, 2, 1) long enough for it to enagage. Then return to Park and check the gearbox oil via the dipstick, still with the engine running. It needs to be on max and a pinky red colour.

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by harry.m1byt on Oct 25^th, 2006, 7:43pm

on 10/25/06 at 18:37:49, RichardMS wrote:

You could try cleaning the ICV for the bad idle, as for the bad gear changes it could be the soleniods in the box, what state is the gear oil in and how many miles has the car done.

I had an ICV fail on my previous but one Granada. Syptoms of the failure was dieing when trying to idle when weather particularly cold. It gradually got worse to the point where it would not idel cold, even in warm weather. It was very sticky in its movement and I found it internally choked up in carbon. I wrecked its internal valve using the wrong cleaner.

On this engine (2.9 12v), it is the nearest part of the engine to you, looking over the top of the radiator. It is held on by two bolts and has a two pin electrical plug.

The KOER diagnostics for the 2.9 12v would report a problem with the ICV long before you would notice a problem. For this engine the diagnotics unit is a cheap and easy DIY project.

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by madalaine123 on Oct 25^th, 2006, 7:54pm

hi i have looked at this icv thing before but when i cleaned it i used wd40 coz i didn't have any brake cleaner or carb cleaner so i will get some and see if i can clean it with that and see what happens cheers for the advice

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by Zombie on Oct 26^th, 2006, 7:21pm

I never knew the 12v didn't have a MAF either. One less thing to go wrong.

As far as a gearbox oil and filter change goes, be wary of using a Ford main dealer. The crooks fleeced me for £200 and did not even change the filter.

Does it not engage when cold? Mine did and it just needed a top up.

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by madalaine123 on Oct 28^th, 2006, 6:02pm

hello i have spent all day on my car trying to sort out why it's not idling properly and i cleaned the icv three times but it has not made any difference i am thinking maybe it's the spark plugs or a leak somewhere but i am not sure which bits i should be checking for leaks can someone help me oh and is there anyone near hatfield hertfordshire that has one of those things that you plug into the car and it tells you what's wrong thanx

Title: Re: how do you clean the maf sensor on a 2.9 12v
Post by madalaine123 on Oct 28^th, 2006, 6:08pm

i have spent all day looking at my car and have cleaned the icv three times and have had no joy infact it's not any different at all so i was wondering if anyone could advise me on what bits i need to be checking for air leaks and if anyone has got one of those things you plug into the car that tells you what's wrong with the car i am in hatfield thanx