hi guys my s2 rs turbo will only run when fuel ecu is unplugged as soon as i plug in engine stalls and will not start again been trying to sort for a month but no luck if i unplug again will start straight away

 

check the heated seat fuse mate in the fuse box.

 

the fues is fine mate runs when i pull it out but not if i put back in

 

if i pull the plug off the metering head plug on the right hand side will run with everything plugged in pressure reg one black
was fine cold start used to work perfect now will not start when cold if i put heated seat fuse in will start from cold but then stalls untill i pull it out weird

can get it running but will not rev up just misfires till fuse is out or unplug the fuel ecu

 

did you find out the problem mate?

 

when you say unplug the fuel ecu do you mean the black plug on the side of the metering unit???

Baiscally with this unplugged the pressure regulator returns to default values, SO NO BOOST, it ignores values given by the air and coolant temperature sensors, so i would start by replacing these and cleaning all electrical connections including earths then let us know if it has helped.

Rob,

PS wtf????

 

Need to replace the sensor on the right side of the metering unit.

 

have changed plug on the side of the metering head makes no difference car will idle fine just will not rev up

 

i have the same prob mate, ive just changed my black box on the met unit and no joy, has your rs been converted to zvh or still cvh?

 

also does your car rev up after 4 mins of idleing?

 

standard cvh yes can only pull away after a few mins once warm i drive it like it everyday if i plug everything as it should be and drive it down the road hard its ok at about 4 to 5 thousand revs clears out then when i change gear misses again but ticks over fine cant rev it up then but if i lean the mixture up starts to rev ok till all the fuel in metering head is gone then stalls and needs to be riched up to start again then problems all over again so drive with metering head plug off so its powerless was fine till i had engine out put back in then was never right since only done rings and shells didnt disturb anthing else

 

mine isn't on the road yet so realy struggling with it, lol, but its going to rolling road on tuesday to get set up and fault find, so i will let you know tuesday what was up with mine mate

 

ok mate all info welcome cheers

 

ok took my car to rolling road and no joy, couldn't even get it started, so i went home and bought another rs turbo, that was sat on a farm in a barn, took all the bits of it that could be the problem on mine, fitted them all today and she was perfect, didn't miss a beat, i had to push the accelerator a little but started and rev'd up fine, then i noticed the petrol was leaking from the filter (was pressure tested on rolling road) so i tightned it up and was busy tidying up for about 30 mins and tried to start again and that was it, wouldn't rev again and struggle to run at all, any ideas where im going wrong anyone? cheers

 

sorted at long last yellow sensor now runs sweet

 

Alrite mate what yellow sensor was it? and weher was it?

 

under the inlet its a temprature sensor only one yellow one cant miss it under the brown as soon as i changed it pluged everything in as it should be and ran spot on on choke and boosting smooth