i havea ford sierra cosworth 2wd 1986.

can someone help me with a peoblem i keep having engine management failure.

this car will start up, tick over ok. but when i put it under load it will start to splutter at about 2000 rpm and engine management light will come in and backfire.

we disconnected wire fom ecu and wire back. distributer. no change.

ive changed on the car
phase sensor, and set up 02-03mm
ive changed rpm/tdcsensor and set up 0.4-1.0mm

ive disconnected wire from rpm/tdc sensor and wire back. to ecu. no change. tried ecu in another car, run ok.
this car has had new
coil
leads
plugs
coolant sensor
aircharge censor
map sensor
changed injectors which is runs yellow.
new fuel filter
air filter

this car has had full paint inside and out and it seems a shame just to burn it!!!