finally got to the bottom of a strange running fault, worth a read guys,

[tillygti6]

since finishing my ph1 106 build, its had an intermittent idle/missfire. being intermittent it was a git to try and diagnose,so after going over the whole lot, sensors, fuel pump ecu etc etc,
i was pretty certain it was map sensor related, as it was hunting badly.
anyhow. id swapped sensors out to little effect until i got really fed up wit it last night, and pulled all the insulation off the loom from ecu to map sensor and sure enough the white wire to the map was mostly broken right through, when stationary it was making a reasonable connection although somewhat corroded, but as soon as the engine moved a small amount it broke the connection!!!!!!!!!

so ive just gone through all my spare looms too check the plugs and of 4 looms 3 have damaged wiring to the map sensor! so it must be a common fault of sorts as its quite tight between the ecu and sensor itself the cable it taught!
ive now sorted another plug with longer tails and so far soo good!

il get a piccy up as soon as photobucket sorts it life out but i bet theres plenty of cars out there with the same fault!

tommy