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 Post subject: Efi issues.
PostPosted: Sun Aug 02, 2015 3:46 pm 
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Location: loughborough Drives: mk2 fiesta 1.4 Lwith RS goodies :)
Right just put a 1.8 Zetec into a mk2 on rs1800 efi.
With a 2fdc ecu.
Got an issue where there is no live to the coil. But using my power probe shows a neural flickering when you turn car over. Can put a 12v direct (via power probe ) and it'll
Spark.
Any ideas ?
Also. When you do this the car will start (full throttle ) but then cut out straight the way.
Will run fine on easy start.
Car front end is up on axel stands.
Car has the 1.4 cfi tank. And erst rep pump. That works as it should. For good fuel pressure up to the rail.

Any ideas to what the issue could be. On either problems. Would be great.

Thanks guys.

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 Post subject: Re: Efi issues.
PostPosted: Sun Aug 02, 2015 8:06 pm 
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Should have 5v at the coil with the ignition on, I wouldn't put 12v to it.

How have you wired the Zetec loom into the car?

No spark or injectors sounds like no signal from crank sensor but that wouldn't explain no power to the coilpack on ignition.

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 Post subject: Re: Efi issues.
PostPosted: Sun Aug 02, 2015 8:20 pm 
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Location: loughborough Drives: mk2 fiesta 1.4 Lwith RS goodies :)
wired it as per the guide the stu?? did. but not wired in the rev counter wire (car doesn't have one). nor have I done anything with the wires that are used for the water temp as per guide.

injectors work as far as im aware, all the stuff supposedly came out of a running car.
if you put the throttle flat to the floor so the butterfly is all the way open, the car will fire then die.
all this stuff supposedly came from a 'running' car
everything else seems to work ok, car spins over as it should ect.
like I say car will run on easy start with some assistance from the power probe,
I know its not a good idea to fire 12v at the coil. just wanted to make sure this engine was a good one after first one being scrap lol.

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 Post subject: Re: Efi issues.
PostPosted: Sun Aug 02, 2015 10:52 pm 
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I assumed it wasn't getting fuel from you saying it will run on easy start when you're living the coil.

If it were me I'd check all the earths, relays, fuses and easy stuff then move onto more involved tests.

I'd diagnose and fix the lack of power to the coilpack on ignition before trying to start it again.

If you take a plug out you'll be able to smell if there is petrol in the bore to know if the injectors are firing.

As a pointer I'd look at the EDIS wiring first.

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 Post subject: Re: Efi issues.
PostPosted: Mon Aug 03, 2015 7:20 am 
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Location: loughborough Drives: mk2 fiesta 1.4 Lwith RS goodies :)
Yes I think that's going to be my port of call.
So the coil live will come from the edis modual.
If only it was as easy fix as my other zetec lol.
All this supposedly came from w running car in April.
I have power to and from the fuses where I need.
Car itself was a 1.1. And was a brill little runner.
I'll have to whip the plugs out and see if they are wet.

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 Post subject: Re: Efi issues.
PostPosted: Mon Aug 03, 2015 7:32 am 
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Location: loughborough Drives: mk2 fiesta 1.4 Lwith RS goodies :)
I have power to the injectors.
Just seems odd that in full throttle it'll
Fire then cut out.
Would a dodgey icv or tps cause these symptoms.

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 Post subject: Re: Efi issues.
PostPosted: Mon Aug 03, 2015 6:25 pm 
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Have you taken the ignition feed off the correct wiring as you need to make sure its stays live when cranking! :)


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 Post subject: Re: Efi issues.
PostPosted: Mon Aug 03, 2015 9:09 pm 
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Location: loughborough Drives: mk2 fiesta 1.4 Lwith RS goodies :)
Yeh all that side is right.
All live where needed when cranking.
Found that the coil wire from the edis has a break in it somewhere.
Just need to sort the lack of neg pulse for the injectors.

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 Post subject: Re: Efi issues.
PostPosted: Tue Aug 04, 2015 10:42 am 
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Cool so now you have 5v at the coil on ignition?

The injectors not getting their switched earth is usually cps related.

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 Post subject: Re: Efi issues.
PostPosted: Tue Aug 04, 2015 10:52 am 
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Location: loughborough Drives: mk2 fiesta 1.4 Lwith RS goodies :)
Yes I have power to the coil now mate.
I have a spare sensor so I'll stick that in.

Strange that it'll run with the easy start.
But I guess on this system.
It cut the injector pulse. Rarther than the spark.

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 Post subject: Re: Efi issues.
PostPosted: Tue Aug 04, 2015 11:09 am 
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Depending on the type of plug you have you can plug the CPS in the wrong way round.

So long as your injector relay wiring is correct I'd continuity check the wiring from the CPS plug to the EDIS plug next then the CPS itself.

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 Post subject: Re: Efi issues.
PostPosted: Tue Aug 04, 2015 11:32 am 
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Location: loughborough Drives: mk2 fiesta 1.4 Lwith RS goodies :)
Yeh. Will do.
God I hate electrical faults lol.
I've checked to make sure the injector wiring is ok.

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 Post subject: Re: Efi issues.
PostPosted: Tue Aug 04, 2015 1:42 pm 
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Location: loughborough Drives: mk2 fiesta 1.4 Lwith RS goodies :)
Also. Anyone know if the coil wire only goes to the coil.
Like it's not power for something else and splits off.
Cause if it's just a direct feed I'll just cut and splice from edis.

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