hi,iwas wondering if anyone can help me.i have a cosworth engine fitted to my mark 1 escort,everytime the engine is set to idle properly and turned of and started the day later it seems to loose its setting and does not idle properly.I have tried a different ecu, map sensor and injecters but the same happens,has anyone ever encountered this problem???
Any help would be gretly aprreciated,cheers.

 

What do you then have to adjust to get it to idle correctly once again ?

tabetha

 

clean the plugs (specially the fourth) adjust fuel pressure and sometimes the co setting.
could it be a faulty fuel pressure regulator???
i also have been told to check the Air temp sensor
Any ideas will help!!
cheers

 

PM replied to with the below:

Not air sensor this will have no effect at all, CTS, this tells the ECU info on the coolant temperature and hence can fuel accordinly these are basically thermisters as is the ACT and they go out of range after a while provides false info. The CO needs to be set to what the author has written that chip for. If you do not know it is normally written on the chip itself, same applies for FP. It is very rare to need to adjust this though as most chips use standard fuel pressure (3.5 BAR).

Martin