phil1973

Hi all
My car is still dead (turns but not fires)
After doing some reading up on the net there has been some possibles (not relays as posted earlier) and thats hego sensor (oxigen sensor) and that my jets mabe blocked.
I have a granada/scorpio MK3 94 ghia
does anyone know can these be cleaned and how please??????
regards
phil1973

CosKev3

Don't think either of those are very likely

Injectors can be ultrasonically cleaned/reconditioned,but unlikely they are blocked enough to stop car starting

You really need to find out:

1,If you have fuel getting to the fuel rail/injectors????

2,If you have got a spark at the spark plugs???????

byrrul

I've been told that it's not possible to clean the hego (heated exhaust gas oxygen) sensor, once they are gone thats it!
My 93 Escort Cosworth went into limp home mode and I was told that it was the oxygen sensor had failed possibly after my head gasket was weeping. Anti freeze coolant in the exhaust gas will kill the sensors very quickly as will using leaded petrol.
I was told that Oxygen sensors should be replaced every 80k or so.

Cheers,

Mark.

phil1973

hi
I have had the spark plugs out and did the crank test and i have a good healthy spark on 3+4 but were unable to access 1+2. The plugs i could see were in good condition so i am asuming that all is fine there.
Some more reading on the net is saying that my problem is highly unlikely to be the hego sensor so i will discard that one for now.
Im hopeing to get the fuel rail off tomorrow and when i slacken the fuel feed pipe that should indicate if fuel is getting there or not.
Im hopeing i dont have to get to the pump as this is situated on the top side of the fuel tank so it means i will have to empty the fuel tank before i can drop/remove it to get to the pump .
wi;; let ya know more tomorrow......
if the rail/injectors are blocked is it an easy job to clear?
regards
phil

foreigneRS

hego sensor will not stop an engine starting

phil1973

hi
just got the fuel rail out and upon inspection i have 3 out of 4 injectors bone dry and one wet (fuel) also the seal of one is split it is on one of the dry ones....
When i disconected the fuel feed hose fuel did seep so i am asuming that fuel is gettin there.
as for the return hose there was nothing not even the smell of fuel so i guess thats faulty????

tabetha

As said the HEGO will not stop engine starting, it can only cause it to lose fine control of the fuelling due to no LAMDA reading, so it will either go into LOS(LIMP HOME MODE) or set value of a hot engine.
If there was any doubt about the fuel supply, just rig up pump to a permanent live so it runs continuously then try and you will most likely find all is ok then, so you would be looking at a fuel pump signal issue.
a said the injectors are not sudenly going to block, and you seemed to have determined it is sparking.
tabetha

phil1973

arghhhhhhh
Just found out i have a granada 4x4 and that means i have the wrong manual for the damn thing....
does anyone know where i can get one?
I looked on e-bay and haynes site but all im finding is manuals that dont cover 4x4,cozy etc....
well looks as though it is the pump but now i dont know where the bl**dy thing is...
Any advise pleaseeeeeee

tabetha

Most likely on the bottom of the spare wheel well, in a cradle thing with the fuel filter.
A 4x4 granada is going to have the same fuel system as 2wd one anyway!!
There are no HAYNES cossie manuals, as they tendo not to do unless they see a certain amount of sales of the car to know they have a market to sell to, don't know how many it is but quite a lot!!
You would first do well to check your fuel cut off switch has not tripped out, and can see this by the button poking up which you have to depress to reset it, either in the kick panel by your feet, or passenger side, or if not look in boot under spare wheel.
tabetha

phil1973

Hi thanks for the reply
I have checked the switch and it is fully depressed so i dont think thats the problem but i will pull it out and do it the way the manual tells me too....
as for the pump i will have a look at this strange little box a little closer see if thats anything to do with it.
You are right they dont seem to have done a manual as it would apear my car is rare and not maany were made let alone sold (bummer)
so looks like my baby is off the road for a while till i can either sort it out or afford to get a mechanic in
will let you know how it goes..
regards
phil

phil1973

Ok strangest thing
i came to test the cut off switch and two things one it was unplugged and two the wires were attached together using one of those wire clip thingys
dont spose there is a known reason for this is there?
anyhow put it all back together the way it should be and still no joy..

CosKev3

Switch could be knackered,and some tight t*at has bodged it rather than buy a new switch,needs replacing really,if you had an accident the fuel pump would keep running and possibly spraying fuel all over car and its occupants,not good

I would put the wire bodge piece back in untill you have got it running,cause you could have just connected up a dodgy cut off switch

Really need to get a 12 volt testing screwdriver,check if you have a live feed to that switch,and go from there

Ref the location of fuel pump,it prob is in the top of the tank,but not sure.

If its like a vauxhall there will be a panel under the rear seat that you unscrew which then gives you access to pump and tank float,but never worked/looked at a granada so not even sure where tank is

phil1973

Hiya

the fuel tank is located under the spare wheel well (what a strange place to put it) as for the access hatch... No such luck there aint anything under the back seat so looks like i gotta pull off the back bumper,towbar and then drop the tank .... Looks like im in for a few buisy days Me v's car wonder who will win

CosKev3

You want to check you have got voltage goin to the pump before you f*uck about dropping tank m8

Old rusty Fords allways win!!!!!!!

You realise that your fuel pump does not run all the time your ignition is on??????
Will only prime for a few seconds then stop running,untill the engine starts

phil1973

I didnt realise that i thought if i had left the fuel feed coupling nut off the injector rail that when i start the engine that it would come out ... but it didnt so i asumed that the pump was buggered.
Im not sure if i can test the voltage to the pump as i dont know where the bleeding thing is
This car has got me close to being beat and i HATE it when that happens
i also found out that all the relays for the fuel pump (timing etc) are under the crash pad (top of dash) so in order to replace,test etc i gotta take my dash apart

CosKev3

You've found the cut off switch for pump,test the voltage there,or follow/trace the wires from the switch to find pump

phil1973

Hi
I have located the pump by cuttin a hole in my boot floor-Now before anyone has a go at tellin me how stupid that is please understand that there was no way i would have been able to drop the tank..The clips were rusted beyond recognition,The straps would have just fallen apart if i had undone them. So i felt i had little choice as i dont wanna scrap it just yet.
I have found that the pump is not primeing at all (no noise when the key is turned) as yet i have not tested the curcit in the cut off switch and that is because even though i own a multi metre i dont know how to use it (i know ..Dumb ass) and now that i have access to the pump i dont know wheich wires to check as there are 3 going to the block.
I have had my neighbour sugest the problem may be in my ECU as he had a car once that wouldnt start and he traced the problem down to that.
He said this because for some reason my car seemed to skip the limp home mode and just died.
Is this a possibility?
or is he just making me feel worse?
On my pump there is two electrical blocks one white one black as i have said before my pump is shared with the sender. There is also an earth wire which i have cleaned and replaced.
But there was no change.
I have no idea how to test a a relay and to be honest i aint got the money to go spending on all these things that could be wrong.
It's gonna be weeks before i can afford a mechanic to come round just to look at the car.

phil1973

Hi again
Right i put a charged bettery to the pump and that works fine fuel getting right through so does anyone have any other ideas please?

I thought mabe the fuel pump relay?
please help i cant go much longer without my motor

phil1973

Hi all

success
Got to the bottom of this damn problem..thanks to all in here.

It was the imobaliser module.
Once i had found it (behind the stereo) took it out,opened it up and there was a great big burn mark in the middle..Got another one from my local scrappy for £7 and the car just burst back into life.

Just gotta stop the leak from the return hose now before i drive it
but thats the easy part.
Just wanna say a great big thanks to all the advice given by you guys.
regards
phil