hi i have a 97 escort gti the problem i have is the idle will not come down below 1200 revs i have put a new idle valve on changed the maf sensor and been told to change a small pipe at the bottom of the inlet manafold as it was very soft has any one got any ideas please

 

Have you set up the throttle position sensor (if it has one)?
Have you set the idle with the Idle valve unplugged?
Have you reset the ECU?

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as far as i'm aware you cant manually set anything on these engines as its all controlled by the ecu.

hawkeye, definately replace that vacuum hose as they collapse and cause a high idle. that hose is actually part of the crank case breather system and if you trace it forward you get to a 90 degree corner that goes onto the pcv valve located on top of the oil seperator on the front of the block. its worth replacing this valve (think Ł12 from ford) aswell as it can cause a high eratic idle too.

i replaced those and the idle control valve on my 1.6 mk6 escort when i had it and she ran like a dream after that. might be worth an ecu reset and a service too depending on when it was last serviced.

 

maybe a leak from the inlet gasket.

 

thanks u all will try every thing

 

When i had this issue with my GTi a few years ago it turned out to be the throttle position sensor, it was as good as new after replacing it

 

Could be a inlet manifold gasket failed or even inlet manifold cracked. Have a squirt around the gasket area with easy start and see if the rpm's fluctuate at all.

 

hi do u know how to set the idle with the idle unpluged

 

thanks everyone but it turned out to b the new idle control valve faulty

 

ah, glad you go i sorted....can be really difficult to find these faults when the parts suplied are faulty!!!

 

thanks phil was up oulton park sat modified live there where some nice motors there