Hi all, am after some help.

Have got a 2000 reg Mondeo st200 that has been great since i bought it. The last couple of days i havce noticed the idle has been a bit high, and yesterday it was all over the place, jumping to 3000rpm when its just sitting there with the clutch dipped. It is also doing it in between gear changes....when accelerating it pulls fine but as soon as the clutch dips the revs rise...

Any ideas would be greatfully appreciated...

Ross

 

i may be lying but you could poss have an air leak, have you checked all hoses etc round throttle body and breathers etc just to make sure?

 

as above , there are 2 or 3 pipes coming off the main induction pipe just after the MAF check these for any leaks or pull them off 1 at at time and put you finger over the hole , if the revs drop then you have a pipe off or split

 

Hi, I know this was ages ago but have the same problem, did this work for you or did you ever find a solution?

 

lots of pipe work to check do the works oil cap dip stick breather lines to bellows evap line under throttle body small vac lines at back of manafold check Iat sensor is firmly home in the bellows ICV pipe an gasket thats the unit at the back of the manafold next to the big pipe coming from the bellows .

 

ISCV, i had the same symptoms not long ago. be either ISCV, or its suffering throttle hang, both very common on V6 duratecs

 

Looks like I have some investigating to do! thanks for your replies will let you know after I get some time to look at it!

 

Could not find any air leaks so tried the throttle hang fix and hey presto instant fix! lets see if it lasts!