Hello all ill explain the situation first lol. I have a N reg fiesta mk 3.5 . It had a 1.1 engine in it but we have removed this and replaced with a 1.6 zetec. I need to know what engine loom to run as i have a xr2i 1.8 16v ecu so the ecu has no pats. I removed the old 1.1 engine loom but it has 2 big plugs that go into the body loom. Is one of these big plugs for the pats??? Can i use the xr2i 1.8 engine loom or a si 1.6 loom. Any help would be grateful cheers!!!

xr2i 1.8 loom? do you mean the rs1800 loom?

with out looking at it i would presume, plug the 1.6 loom in and make sure the wires are the same but you have to change the interiour loom as i think the 1.1 has less wires on the 2 multi plugs

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fibre is my friend, more to come ;-) SI/T squirrel muncher

i have a 1.8 16v xr2i ecu but no engine loom what so ever mate lol. I just need to know which loom is the one to use. surely someone has fitted a zetec to a non zetec car before .

when i fitted the zetec to my mk2, alex and myself had to cut and splice my 16v Si loom into the 1.1 mk2 loom

if i'm right in thinking you'd need to sort out an ignition relay and a fuel pump relay and by pass the pats!like we had to for my mk2, i'll see what i can dig up for you

edit -

zetec conversion into a 1.6 8v 2i

http://www.fiestaguides.co.uk/content/e ... rsion.html

yeah basically the ecu i have is a non pats xr2i 1.8 16v one and i have just sent some money to someone on here for a 1.6 si engine loom. If anyone knows how to get this car up and running please help!!!

its a 1.6 zetec yeah?

might be better off getting a 1.6 Si ecu and going tha route, ive not done the conversion to a none zetec fez before, only my mk2 but like i said that'll be a bit different to what your doing

its best to have all 1.6 si parts including loom and ecu i dont think a 1.8 ecu will work.

the 1.8 xr2i ecu dont have pats so that shood be fine for the engine. Yeah it is a 1.6 zetec. how hard is it to splice the ires to get it to run and also does anyone know how easy to bypass the pats setup??? what bout if i get a xr2i full loom???