Hi all can some answer me this question?

Its the black box that bolts on the distributor

3 x wires

1 x Black ignition live
1 x brown earth
1 x green ignition coil

NEW on ebay here (aftermarket) so must go wrong often if they patent part

http://www.ebay.co.uk/itm/3108544855...%3AMEBIDX%3AIT

 

Someone may be along with a better answer but I was under the impression it amplified the spark when you needed it ie. putting your foot down. My 1.4 Orion conked out and if my brother hadn't had it happen to him on an old car of his id have had no idea about this thing.

 

So ive been told it sends pulses to the coil and from the coil to the fuel pump relay..
As other chap above said 2 more you put foot down more spark...
which would cause for more fuel....

Cheers for answer

 

The amplifier Boosts the signal from the pick-up in the distributer to switch the ignition coil

 

What you are referring to is the hall effect sensor, not the amplifier.

This is essentially the electronic ignition.

Martin

 

The ignition amplifier takes a small low current input signal and switches a high current signal on the output to ground (hence amplifier).

Here it 'charges' the ignition coil primary by pulling it to ground, this typically lasts 2-6ms, the ignition amp then releases the now saturated primary. Now you see a large flyback voltage which is clamped by the ignition amplifier to 350-400v. This high voltage flyback voltage is stepped up by the ignition coil/transformer to several thousand volts on the output of the secondary.... where you get spark.

The ignition amp replaces the points and condenser in an old school distributor setup and is still used in modern cars either inside the ecu, as an ignition amplifier or right on the coil its self for coil on plug setups.

It does not do anything to do with the fuel pump of fuel system.

 

The guy in the listing gave a reasonable description of what they do:

"Ignition modules are usually found either in the distributor, on the distributor housing or in the engine compartment. It is the electronic control for the ignition system that works by receiving a signal from a magnetic pickup or a sensor in the distributor. The ignition module then uses the signal to open and close the ground circuit to the ignition coil to fire the spark plugs.

System: Inductive / Pick Up"

 

So just to clarify the green wire that goes from Ignition Module/Amplifier that's bolted on the Distributor, only give pulses to the Ignition coil to give spark to the HT lead the Dizzy Cap it does not what so ever send any pulses to the Speed Sensing Module OR THE Safety Module (fuel pump relay) the power the fuel pump or send signal to the REV counter r.p.m....?

Wiring diagram pic below staring with ignition coil ending with rpm:

 

Here my ignition module / amplifier:

 

Here is pic of new ignition amp and wiring numbers:

I Take it that
= 31 is earth
= 15 is switched live
= 1 coil

what are the other numbers???

 

It is possible the amp may send a signal to the tacho/FP relay etc. Or this may receive the signal from the trigger -ve side of the coil itself ( which is from the ignition amp anyway, so same odds )

 

It does send a signal to the tacho as well. I've had to replace quite a few for none start

 

Cheers mate finally someone talking sense

 

It depends what car your going on about doesn't it really? I think in this case your the one not talking much sense mate.

Next time don't ask such a broad question. And say: does my Rev counter attach to the ignition module in my rover metro?

And just so you know the ignition module doesn't 'send' a signal to shit. Your Rev counter may connect to the coil some where to pickup the high voltage flyback or it might connect before the ignitin amp and look at the low voltage signal fed to the amp.

 

The ignition module boost the hall signal from the dizzy witch goes to the coil and triggers that and the tacho is connected to that. The modules are common as muck to break down.

 

Well its seems everybody ( about 3 posts from other members) else new that is was for a ford cvh
NOT clear to some people

 

thats a bit harsh m8, Rob was offering good advice and info,

ignition amplifiers are fitted to many fords and different engnes including pintos, cvh's, x flows, cosworths etc, most dont have fuel pumps and a lot of older stuff doesnt have rev counters either

the job of the amp has been explained by Rob, the green signal cable in the case of youre xr3i is also used to give the rev counter a pulse and switch the fuel pump relay on, when the pump relay is energised this also gives power to the cold start & warm components,

if you had a carb rather than a mfi setup all that amp would do is supply the coil with its neg pulse,

as i have already suggested check the continuity of the cable between the coil/amplifier and the relay and rev counter.
we dont know what youre mechnical knowledge is or what other skills you have so if someone suggests something you dont understand ask be as descriptive as you can with any queries as people will loose interest very quickly if we have to keep asking what may seem like a basic question like what engine/car it is.

just for youre info my mk1 escort has 2 ignition amplifiers and neither of them do a fuel pump relay, rev counter or anything other than sort a spark out and its a cosworth engine

 

Big thanks too s1cosse and stevie turbo who must know the mk4 escort xr3i/rs turbo

 

Slider well you know what car I had so why didn't you say what you did above... mmm

 

Just a note to those of whom have not caught up

The car in question is a 1987/88 Ford Escort XR3i cabriolet 1.6 MFi CVH (mark 4 for those who don't know)

As said before BIG thanks to s1cosse And stevieturbo

will post up when sorted hopefully to help future new members

new ignition amplifier/module ordered only Ł18 from ACEPARTS

 

Yea, thanks for that mate.

You asked what it did and evey one told you. If there is another problem just ask as I we can't help you with out a clear question. Is your Rev counter not working? Or are you getting no spark?

I just thought you wanted to know what an ignition amp was and how it worked.

 

No worries mate it should get it up and running again. Also check the heated seat fuse mate as that cause a lot of problems.

 

Sorry to rob/slider I was having a poxy day yesterday, cheers for you input
To s1cosse:
Heated seat fuse I have heard of this off someone else, as it doesn't have heated seat but there one fuse in there...?
What does that part play in it

 

Does this distributor of mine supposed to have some earth wire going to the highlighted part in below photo...?

 

Its all cool mate, I was hung over when I replied a bit snippy too

Just wasn't sure what you were asking about, maybe there is another thread somewhere that I haven't read etc.

Good luck fixing your prob.

Rob,

 

On s1 / s2 the fuse is for cold start if I rember rightly. It's been a while playing round with mk3 and 4s.

None of the escorts had heated seats that I have seen. They just put cold start fuse in that location.

 

the heated seat fuse has come up a lot before, for some random reason the mk4/s2 used a feed from this fuse to do the warm up/cold start stuff so this could also be a cause of youre high revs as the aux air valve would be permanatly open so rev higher

 

I have already checked continuity between all offender cables everything there is all fine
Have ordered a ignition module/amp today should be here Wednesday
all pointing that way as the fuel cuts off and the rpm rev counter does not work either