supermatt

i have a mk3 fiesta with a 2l mk1 mondeo engine in it.
running 2fcd 1.8 16v 105hp ecu

been running fine up till the otherday where it just stopped and hasnt started since.

my prob is not spark and no fuel pumped.

i no my fuel pump works as i have put a new feed to it to test.

i've changed ecu, edis4,coilpack aslo checked cps and its reading 400ohms which from what ive looked up its right.

i've found i have no ignition feed to my ecu.

if it was a relay would that also put out the fuel pump if so which relay is it.

im not very good with cars.

im changed my cps 2morrow to see if it helps. but im sure its summit to do with my ignition feed and also what pins on the ecu do i need power to have it running?


please help thanks

supermatt

bump

tabetha

Look at the main feed relay that powers the ecu, a duff cps will stop both fuel and sparks though, if the main power feed is not present there will be no ecu output, and fuel pump is ecu fed, as of course is ignition, so I'd start there.
tabetha

gavintwopies

Ditto

supermatt

ok i'll have a look.

what will the main relay look like. will it be with all the other relays

if you got a pic of it that would help alot thanks.

tabetha

The main power feed relay, may be marked pcm, on lid of fusebox/relay box, it will just be a boggo std spst relay, with numbers 30/85/86/87 on it, as most are.
Do you not have a handbook for it ?
tabetha

supermatt

nope i dont have the handbook, think its worth getting a haynes on it,

is it going to be a 4pin relay or a 5pin one?
thanks

supermatt

bump.

had it running for a couple of days and now its playing up again.

ive got spark but no fuel which number in my box is the fuel pump relay.

i know my fuel pump works as i have tested with a feed straight from the battery please help.

john_d

what did u do to get it working for a couple of days?

tabetha

If the loom has a fuel cut out(impact) switch, feed the pump direct from ignition, or find where the supply is missing, start at fuel pump relay, this will be fed most likely from the main power relay, that feeds the ecu.
tabetha

gavintwopies

i have seen the impact switch also pack in as a mate have a 1.3 hcs van with one that had burnt out internally so by pass it to confirm its not this.