My mate from work has a ST170. The engine light has come on it and he said he did 100 mile to half a tank the other night. Does anyone have any ideas. We plugged the ford diagnostic tester in to check to see if the lambdas are working and they seem to be fine.

There was also another fault code which was for the inlet manifold. We the engine is reved you can see that the cable from the control unit is pulling the flap open in the inlet manifold.

Has anyone got any ideas.

 

That's the IMRC P1518. There was a recent thread on it with a description of the problem.

https://passionford.com/forum/ford-f...ml#post6471041

 

Could be lambda sensors too, think they fail quite often on these

 

As above matey. They seemed to be working ok on the ford tester.

 

Well last week my mates ST.s engine light came back on again. It was a lambda sensor fault. He replaced both sensors. The car was mint for a week and the light is back on. The inlet flap is sticking open. It looks like the imrc is at fault. We will take it apart and see if we can see anything inside.

 

when the engine starts does the cable pull straight away?

 

100 miles to half a tank works out at roughly 22mpg, if he's been booting it that's what he will get, that's roughly what I'm getting

 

I'm getting 21 MPG out of mine regardless of how I drive it, slowly getting used to the idea that its not gonna get any better. luckily I only do under 6k a year,

 

I havent noticed.

He said the engine light came back on last week and the fault was the imrc again.

 

U can by pass the imrc then get it remapped 2 let the ecu know that the imrc is not being used and wont have the exspensive problem of replacing the imrc now and in the future as it will go again