Having trouble with my xr2i converted fiesta rs turbo runs rough on idle and when you rev it it won't settle just cuts out its running an ofab ecu with t3 any ideas would help

 

Have u checked all pipes/hoses could be a air leak if there not on tight...if u done a conversion it will need a set up at a tuners to set up fueling/timing/revs/boost ect

 

What injectors and chip are you running?

Lee

 

Rs turbo loom or converted xr2i loom?

chris

 

STD ecu and injectors and converted xr2i loom with the pin changes

 

MAP sensor connected and a good vacuum signal?

 

Yes map sensor connected how do I check for a good vacuum signal?
It runs just very lumpy over fuelling ? Can smell it

 

Any ideas guys want to get this on the Rd now

 

What is the car idling at? I find Denso iridium IK27 plugs are better for the EFi turbo, With NGK mine idled worse. Have you cleaned the ISCV out with carb cleaner, Also clean out the throttle body too. the other thing to check is the CTS.

 

Plugs have been in before and ran fine have cleaned iscv out not made a difference have replaced co pot , Edis, injectors and fuel rail for known working ones new cold start valve still the same it's had a t3 conversion but still runs std injectors and ecu would this be a problem

 

Won't affect idle. Have you set the base idle? also, what breather?

Lee

 

I mention the breather as I had a similar issue. The issue I had was where I removed the breather system in favour for a mini K&N on the rocker cover; bad move. There are two vacuum ports on the lower inlet manifold, these take in fresh air and vapours from the breather system for idle.

Lee

 

Standard breather how do.you set base idle?

 

Have you connected the 2 vacuum outlets to the breather?

For the base idle there is an adjustment screw on the bottom left of the throttle body as you look at it from the front of the car (near the TPS). IIRC you need to disconnect the ISCV, hold the revs at 2k for 30 seconds and let them drop back. If the car cuts out turn the screw on the throttle body a quarter turn anti-clockwise.

Lee

 

Still no joy think the problem is that's it overfuelling mega and can't find out wy

 

Have you checked the fuel pressure at the rail?

 

Try disconnecting the pipe from the vacuum ports on the inlet to the breather at the breather end so that the pipe is open to air. Does it idle happily up high? If so the breather may be blocked. If not, remove the one way valve and repeat. The one way valve may be back-to-front or blocked.

Lee