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M reg ford pickup 1994 no PAT Ring on ignition

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Re: M reg ford pickup 1994 no PAT Ring on ignition

Postby cuky » Tue Jan 10, 2017 11:34 pm

Altransit wrote:The electrical switch on the back of the ignition barrel could be faulty :idea:

Should be able to test that with a Volt meter, I do get the voltage of the battery and one of the pins. Will check the others when moving the key
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Re: M reg ford pickup 1994 no PAT Ring on ignition

Postby cuky » Wed Jan 11, 2017 12:14 am

LUCAS 196SA I post this just in case anyone else wants it.
locus196SA.jpg
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Re: M reg ford pickup 1994 no PAT Ring on ignition

Postby cuky » Wed Jan 11, 2017 12:45 am

BCP wrote:Ok, the ground is now spanking clean, wire brushes and electrical contact cleaner and clean metal to ground.

Frag wrote:
BCP wrote:Ok, so I have tested every relay in the fuse box, and the one by the side of the engine battery.

Both brown relays, left for powerhold and right for efi fuel pump are both good.

Where are these located ??

I'm sorry, i have been fiddling so much the power hold went back into the wrong slot, which was actually heated rear window.
It is now in the correct spot, and reads 0v when ignition is both on and off. Sorry for wasting time here :x


Image
One relay was duff, XI, a red 40a relay marked with a battery symbol and EFI or T/C underneath was duff, but having replaced it with a good one from a scrapyard, the ECU light still does not come on and the engine will not fire.

Are you sure you replaced this with the EXACT same type,not all relays are the same.....
Have I fried the ECU?!


The red one is highlighed green in picture. In manual it is power supply (EFI) and is the exact same fuse, same numbers, ampage and pin layout AND its in the correct position.

Ok now that the powerhold is in right place

Nope :?

If Fuse 23 is PH relay and has no power 0v.....
How can PH relay have constant 12v ? at 30 & 86 :?:

We assume the other 3A fuse 8,
is ignition feed to ECU and is working (ignition switched)



Fuse 8 = now only showing 1 vwith ignition on, 0v ign off
Fuse 23 = 0v both on and off

The power hold relay is NOT clicking now that its in the correct spot.

The replaced red 40a fuse IS clicking.



Sorry I have wasted soo much time here.


This looks like mine except they still have the imporant bit the diagram. I can work with this
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Re: M reg ford pickup 1994 no PAT Ring on ignition

Postby cuky » Wed Jan 11, 2017 1:15 am

gotgcoalman wrote:main fuse box under bonnet ok?
the 1 with the 60/80 amp fuses in.

Is it a Di or Tdi?

pic of wiring going to starter and fuel pump would help alot.



Can someone tell me where I might find the engine bay fuse box on a normal tranny mk4. Mine appears to have moved or been replaced by something else.

Cant find a fuse box in the engine? Picture 3.1a Page 12.4 Haynes Manual Tran 1986-1999.
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Re: M reg ford pickup 1994 no PAT Ring on ignition

Postby gotgcoalman » Wed Jan 11, 2017 7:35 pm

Mines only the humble Di.Yours might be different or hidden somewhere else :(
Main fues box is between the battery and inner wing.
looks like this.

IMG_20160420_145236.jpg
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Re: M reg ford pickup 1994 no PAT Ring on ignition

Postby Frag » Thu Jan 12, 2017 12:57 am

The mk4 doesn't have a fuse box in the engine bay,only fuse box as standard,is the one in cab above O/S strut top,
The engine bay fuse box in the pic above is mk5 (smiley).

Once you have a known good battery on it,if the fitted ambulance isolater is ok,
Have a look at the ignition switch multi plug,they used to overheat and melt,this would lose ignition.
(Remove lower column cover and connector block is a few inches away from switch 6 large pins if I remember)
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Re: M reg ford pickup 1994 no PAT Ring on ignition

Postby cuky » Thu Jan 12, 2017 8:34 am

Frag wrote:The mk4 doesn't have a fuse box in the engine bay,only fuse box as standard,is the one in cab above O/S strut top,
The engine bay fuse box in the pic above is mk5 (smiley).

Once you have a known good battery on it,if the fitted ambulance isolater is ok,
Have a look at the ignition switch multi plug,they used to overheat and melt,this would lose ignition.
(Remove lower column cover and connector block is a few inches away from switch 6 large pins if I remember)


Many thanks, I will check this at the weekend. At the moment I am reviving the battery. it has started to hold a charge at 12.5, so a few more cycles of charging should put it back as it was.
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