Hi all hope you can help with a problem i Have. My RS Turbo is a B Plate S1 with a std 1600 cvh with cam and chip. The car starts poorly when cold turninig over for quite some time, have checked the C0 readings and all are with in spec, timing is spot on but still I have this problem. I have read in the Ford tech manual that full load enrichment and cold start enrichment are controlled by the same primary relay? Is this true as I also have det problems when running anything ovewr 10 psi when on full boost. Have double pace cooler to preserve std looks and think these faults are commonly linked with fueling rather than high air temps. Ok so i go to a rolling road (interpro) for a rolling road thrash with the IOW RSOC this year to be told the same thing there was virtualy no full load enrichment over 3800 rpm, car made 134bhp at 3800 rpm and he stopped the run. His advice was to source the correct relay as i had 2 black relays taped together in some kind of strange bodge. Please i need help for my poorly car I need this relay or a way of sorting it out, have tried everywhere for relay and got stuffed at every point. Do i need to run S2 ecu`s and loom or try a new managment? Help please guys have told you everythin I know!!

 

Also would like to add the car pulls fine when warm and starts fine also. The engine its self is in great shape runs quietly and smoothly with no smoke or rattles so this is purley a managment issue. Thanks for your time Jase.

 

Check the tps switch as can run in second enrichment mode best way to check disconnect multiplug and link out the inner and 1 of the outer wire's for 1st fuel mode see if that cure's it ?


Regards Doug .

 

I had a similar problem.

Adjacent to the silver fuel relay should be a black relay. This relay supplies power to the black fuel ECU which, I believe (not 100%) controls the pressure actuator and the part load and full load fuelling. Some of the control also comes from the TPS.

When I had my car set up the relay was not supplying the ecu with power and the fuelling had been pushed up to run the boost but the co at ilde was horrendous which washed the bores.

Once the relay was working the fuelling was set up and is spot on.

What it sounds like is your car is in limp home mode i.e it has basic fuel adjustment proerties to get it home but it cannot adjust for boost.

You may want to check your pressure actuator (located to the back of the metering head. Can be black or grey) is connected. There is a screw inside to up the fuel but I think this is not operating properly.

A quick call to MSD might help you too. They are always good with things like that.

 

Thanks for that mate will give that a go. Any ideas where the relay can be purchased from?

 

Checked the connection of the plug and it was correctly fitted and when discommected the car cut out what does that mean?

 

that means you have power and it is doing its job.

do you have any noise from the fuel pump?? a large buzzing sound?

 

Try to disconnect the cold start valve at the back of the engine. and give it a run from cold.
You also might want to check the resitance accross the auxiliary air valve which is connected to the cold start functions.

PM me your email and I will forward you an RS Turbo tech document. Which will give you the resistances to look for.

Sounds very strange. does it only do it when cold?