iv got no power to injecters got spark fuel ect just no injecters, the car had a crashed the crank sensor got broke never starter in a year in 9 monthswhat could it be?thanks

 

anyone?

 

I would be more inclined to say No Spark as that is the usual syptoms for a knackered CPS.

Someone will probably corrrest me tho lol

 

Ignore. Didn't realize it was a Fiesta. Though it was an Escort Cosworth.

 

is it possible that it could be the fuel cut of switch due to being involved in a bump

 

It is an Escort Cosworth

T28 car converted to weber management.

I think the crank sensor does just the spark? Well i'd say if you have spark you should have injectors... Does the fuel pump prime?

 

Injectors are fed from the same relay as the ecu, idle valve and boost valve.
See: http://www.siipicossu.com/manuaaleja/engine2.jpg
Could be fuse 3 or fuse 25.
Also see: http://www.siipicossu.com/manuaaleja/engine1.jpg
Inertia switch only blocks the fuel pump as you can see above.

I assume you used a wiring loom from an Escort Cosworth.
If not, please specify which wiring loom is used.

 

hi mate, its my car my brother is on about as im working most of the time.. right it was a small turbo car at some stage in its life now big turbo engine using 4x4 engine loom, fuel pump is bye passed too mate, any idea's mate as this is goin on months im starting to run out of things of what it could be, cheers hugh

 

yes Paul, tried the ecu still no go ha running outa things it could be now the fuel pump is working hav fuel at the injectors thou, cheers hugh

 

4x4 loom is basically the same as the Escort loom
http://www.siipicossu.com/manuaaleja...ediagramL8.pdf
Main relay has two outputs: 87 and 87a.
Perhaps one of these does not make contact.

 

Have you checked all the fuses/relays lad?

If the loom is good, it has to be something like that? Also are the crank and phase sensors gapped correctly? Something silly to check - you haven't plugged the Crank sensor into the knock sensor connector on the loom by mistake?

 

Should effect +VE to the injectors, but they will have no -VE pulse to open them without the CPS, so yes essentially they end up with no power, as to have power requires both +VE and -VE

On some ECU's it will be the other way around and they will have -VE but not +VE pulse, depends on if they are + or - switched in the first place, but either way they wont ever operate.

 

all fuses are good, il check relays! i gapped the cps sensor 0.8mm u dont no the gap for the phase sensor? i checked them but still not thing thanks for the help guys

 

Does the rev counter move when you crank it over?

 

it goes run to the end chip?

 

when its turning over the phase sensor is clicking like hell!

 

Do you speak english?

Is the rev counter working when you turn the car over?

Try doing so with the plugs taken out if in any doubt as it should spin over a lot faster then.

 

Sounds like its gapped so its touching then?

 

i hope i do
when u try starting it the needle goes past 7000rpm!


do u no the gapping for the phase sensor?

 

same sort of problem i have. i have a spark the fuel pump is priming got no pulse / power to the injectors

help

thanks

dave

 

dave get your self on escortrscosworth.com they helpfully guys

 

thanks mate will do

 

if it had a bump, check all the lugs are ok on the crank pulley

if its on l8 ecu will it not go into limp home and run without the phase sensor

 

Do you have BOTH no pulse and no LIVE, the main power relay that feeds the LIVE to the injectors and the ecu's are fed from terminal 87 on the relay, 87a is a changeover relay marking, this extra 87a is not used by ford as not needed just the std 4 terminal switching relay, where on a relay a extra 87a terminal exists it is in the centre of the other four that around the edges, and so won't be connected as relay holder is designed/wired for a 4 pin relay.
On cossies the injectors are pulsed negatively by the ecu when in receipt of power and good crank signal, phase is only used when starting, if out of phase it will over fuel massively.
tabetha