Hi all ive had a few minor idle isues with the mondeo since i got her, i cleaned out the original idle valve but since found out it was leaking air so i replaced it with a genuine ford one. Now the when i dip the clutch the revs rise to around 3k and the slowly come back down where it will eventualy settle around 700. There were a few other thing that were done at the same time which was the moose pipe had a hole drilled in the end for some unknown reason so i sealed that and they had also put a piece of copper pipe in the same hose with a reducer in it which i also removed. Engine is near standard apart from an exhaust system, magnecore leads and a piper x viper induction kit so anyone got any ideas? Thanks for your help guys.

 

The ST200 confuse's the hell out of me mate
but your more then welcome to look at mine or borrow a part to test

 

thanks mate, im just going to go and try one thing that someone else advised on another site. they told me the copper pipe should be put back in as its something to do with throtle hang? cheers mate

 

What ever that is LOL
just send us a PM if you change your mind fella

 

throttle hang, thats why there was a reducer in your moose pipe. throttle hang is VERY common on the 2.5 V6 duratec

 

right ive put the copper pipe back in and its better (dont rev up when i dip the clutch) but it just doesnt seem right and takes time to come back down then idles around 650-700 ish.

 

the inlet manifold runner control (imrc) has nothing to do with the idle does it? it just controls the secondries right? its just ive seen that a few people have moved theres to under the battery tray and wondered why?

 

no, the imrc just controls the secondaries, the only thing that will do if broke, is not open the secondaries, which results in no pick up in power at 3k+ revs. i have replaced, and moved my imrc, its now on the battery tray. the reason for moving them, is ford genuis idea of placing it on top of a red hot rocker cover, isnt the greatest idea. on the battery tray, there is no chance of it over heating.

if your revs are not jumping up to 3k now you have put the reducer back in, the throttle hang is cured, as for it ticking over at 700 revs, i would worry, mine does.

 

cheers mate, ive watched my secondaries open so i know there working, so would it be worth moving to under the battery tray anway then? i take it thats menat to say i wouldnt worry, mine does? thanks mate

 

prevention, is better than cure mate, as they say, especially when the cure, is well over Ł200 from ford for the part alone, so yes mate, move it to the battery tray

 

thanks mate, i think ill get it moved then. ill see how the car goes now for the next day or so as maybe its me just not used to the duratec v6 engine and how they idle ect as im used to driving 16v engines.

 

As Fiddy says the copper cap was there to assist with a very common problem which is called throttle hang. The other thing that can cause these symptoms are the Idle Control Valve which sticks due to becoming clogged up. but you say that youve cleaned this

How long is it since the Viper was cleaned out?

Jeff

 

i had the viper of the other day and it doesnt look too bad and i cleaned out a couple of loose bits, the iacv is brand new from ford. Today its been playing around again when your driving its fine and there is very minimal throtle hang but when you put the clutch down the revs drops down to around 1k then will bounce down between 250 and 500 and nearly stall then correct its self and bounce back up to around the 650-700 mark and sit there all day untill you drive and dip the clutch again. This is sending me mad now, this wouldnt be the new iacv playing up already? Thanks for everyone help on this but im getting very old very quick lol.

 

thats a good point actually jeff, i havnt cleaned my viper out for ages.

 

what did you clean your ISCV out with mate ? brake fluid is best, and leave it to soak for a few minutes aswel. i cleaned mine out not long ago, becasue when i was breaking, and going down the gears for junctions, roundabouts etc, it started cutting out, and its not very good crusiing upto junctions and roundabouts, with PAS or brakes lol. it hasnt really made my idle any higher, but it doesnt cut out anymore. i used brake fluid to clean mine, cleaned it up a treat

 

its a brand new idle valve mate (Ł75 lighter from ford)

 

just had the viper off and gave a good clean/blow with the compressor and sealed the joint to the airflow meter so ill see if theres and difference in the morning.

 

oooof. i just cleaned mine, and got another off a lad local to me who was breaking a V6, so ive got a spare.

 

Clean the throttle body with brake cleaner, its not fully closing due to carbon build up.

 

thanks mate but ive already done this, i total striped mine down and cleaned it with a tooth brush lol

 

It does sound like the idle control valve could still be playing up.

Unless, there is a split pipe somewhere that could be causing issues. I wish you were closer as I would have taken a look for you. I am in Kidderminster the week after next so if it is still playing up then we can arrange to meet somewhere.

 

Thanks mate the drive i did this morning seemed better and it didnt do the funny idle going down to 250 ish. Got a bit of driving to do latter so ill see how it goes then. Another man of here has also said i can swap a few of his bits over to mine to try and eliminate the problem. Ill keep thread up to date.