Im running greys on a L8 ecu,ive replaced the water temp and air tem sensors,and it wont idle less than 1050rpm with the iscv connected even though its 900rpm when disconnected.

At idle the co is 7.5%! and it wont go any lower however much i adjust the co screw on the ecu.

Any ideas please??

 

Maybe map sensor as this also has a major effect on fuelling.

 

Check TPS alignment.

 

Seem better now ive set the tps to 0.20v closed even though i was told it should be 0.35v.

The beauty of buying non standard cars that have been messed with eh!

Will have to get it up to you to check

 

Throttle angle is absolutely critical to the ECU's idle, warm up and overun strategies. We set them in degrees via IAW monitor as opposed to V's as its far easier and more intuitive.

 

Wont tick over less than 1000rpm either even though ive set the base idle, the mapper told me that it was set like that.
Does that sound right?

 

Weber looks for 850 - 900 rpm and raises it if it sees it lower or requires it due to coolant temperature. If you set it to 900rpm when hot and then plug in the ISCV and it changes, something isnt quite right.

Contrary to popular belief - The ISCV is NOT there to control idle speed.

 

Hi Stu

What should the TPS be set to in degrees??

 

Zero - closed.