Brawlsteins

Hi all, been a while since I've been on here, lost me login and all that so had to re-register.

Basically cutting a very long story short I fried the ignition module in my ECU (L6) resulting in a loss the spark, I had a spare ECU (L8) kicking around, plugged that in and got a spark back but over fueling.......

What I'd like to know is, is there a ' mobile Cosworth tuner' in the Hertfordshire are or sounding areas to at least get the old girl running again.

Ta, Pete.

jamie956

Did you change the TPS when you swapped the ecu you need a PF09 for the L8, is the car standard.

Brawlsteins

Hi Jamie, thanks for the quick reply,

Good point...!

No the car isn't standard,

- light blue injectors
- T34.
- re 500 style inter cooler

The ECU Has a ahmed bayjoo chip and came from a escort cossie running the same mods as above.

jamie956

Once you got the TPS changed and set up I would get it into someone to make sure its fuelling/set up correctly. If you go to someone who works with Ahmed they should be able to get the spec of the chip you really need this info to set the car up properly.

The Youth.

iTrader: (1)

you also need to change the chip as just fitting the chip that was in the L6 is no use in the L8


steve

Loomer

It would work if you took the expansion board out. But then it's not really a L8 lol

Brawlsteins

Thanks, Jamie, will do.

Hi Steve, I haven't changed any chips, the L6 with the fried ignition module still has its chip and the Ahmed chip is still in the L8 ECU.

Thanks.

jamie956

I think hes saying the L8 has a chip in it same spec as the car/old L6.

Loomer

The tps may well be much of the issue as you will be referencing from the full throttle enrichment maps, add that to a cold start enrichment map with bigger injectors and you will certainly have rich running as it fires up.
Check the fuel pressure, and that the ect,act and map sensors are good also.

The ign module/amp is external from the ecu though, what part of the ecu died?

Brawlsteins

Thanks all for your input, great help...

Basically I damaged the ignition amplifier which then fried the L6 ECU.

Fitted the L8 ECU which came off a escort cossie running the same spec as mine.
In the aim to just to get the old girl running so I can take it somewhere to get set up...

Ta.

Loomer

Yeah should work, so long as you also fit the pf09 throttle sensor and swap the two outer wires.

Brawlsteins

Thanks Loomer, I'm planning on tinkering on Saturday, I'll keep you all posted.....

Great help...!

The Youth.

iTrader: (1)

are the specs of the 2 chips the same?



not sure just asked above lol

Brawlsteins

Hi Steve, no they're not. The L6 was only around 270bhp...

The L8 is 300+bhp.... If this makes any sense.....?

Loomer

The chip in the ecu your using has to match the engine/components fitted.
It has to be for the correct engine spec, injectors, map sensor etc, or it will never run correctly if at all.

I think I have a good working L6 if you need to buy one. Drop me a pm if so

Brawlsteins

Cheers Loomer, that's good to know. Might have to take you up on that offer..!

oldford

Are the map-sensors the same for the L6 and the L8 setup?
The Escort Cosworth uses standard a 2.5 bar map sensor.
You can't get 300bhp on a standard Sierra 2 bar map sensor - at least not save.

Are the numbers on the injectors for both setups the same?
There are so many light blue injectors.

Brawlsteins

Hi, the guy I bought the L8 from said that it came off his escort cossie running:

T34.
Light blue injectors.
RS 500 style inter cooler.
Power 410 or 390bhp, can't quite remember which one.
I'm not too fussed about the power side of things as I've only got 13's on the old girl.......

The car is running the same as the above with a L6.
The injectors are 0280 150 400....

Thanks.

martysmartie

iTrader: (1)

As said you can't interchange chips between ECU's.

In addition to swapping the TPS, you need to invert the outer two wires, as said.

Also are you sure it's an L8 you have, as Escos did not have this?

What is important is that the software is calibrated for your setup.

Martin

Brawlsteins

Hi Matin, I'm not swapping chips between ECU's, Im swapping the whole ECU, from a L6 to I'm hoping a L8 now.....?

Thanks.

Brawlsteins

**From a L6 to a L8**

cossynut2

As you said you must fit the PF09 and swap the 2 wires when you put an L8 in place of the original L6. I have done this change on my 2WD Saff as I run Siemens 83 lb injectors and the chip to run them has to go in an L8 ecu.

martysmartie

iTrader: (1)

So you are, chips were mentioned earlier, so I thought this may have been what you were trying.

The only way to tell is to post the model number printed on the ECU, visually they are also different.

The Escos (BT) has a P8 so unless the guy changed it, then this is what it will be.

Irrespective, you need to sort the TPS out.

Martin

Brawlsteins

Hi all, quick update, I fitted the PF09 and swapped the two outside wires round, ie the red and green/brown, left the middle wire as is ( black )

The car tried to fire then died....... Then the good old battery died....

I'm working tonight so had to leave it for today but my mate is going to lob a jump pack on it later so I'll keep you all posted.....

I'm finding it hard to post pics on here as I'm only using an iPad but the details of the ECU are as follows:

CO2 screw: White.
No mounting wings.
Sticky lable: red and white.

Red bit: Webber IAW
Italy. 048/02

White bit: WD48.08/L3E_31

Thanks Pete.

Loomer

That is L8.
take the plugs out and clean them up/replace ideally as the fuel contamination may have killed them.
leave them out over night let the fuel that will be sat on the piston crown evaporate.

Brawlsteins

WOW, thanks Loomer for the quick reply...! I'll pass that on and thanks for confirming its an L8..!

Event of a worst case scenario, the L6 ecu you said you had spare, is that a standard ecu...?

Thanks.

Loomer

Yes all std

Brawlsteins

That's brill, thanks.

Brawlsteins

Hi all,

The saga continues.............
Basically the cars symptoms haven't changed apparently.

I'm contemplating nipping it all in the bud before I start spending sutpuid amounts of money chasing my tail ( I've been there too many times before ) and just getting another L6 ecu and putting my chip from the fried one in it.

If I did swap the chips over, L6 to L6, do I have to send it away or is it something I could do...?

Thanks

Loomer

The chips are easy to swap over, just make sure they go in the correct way around, keep an eye on the notch on the chip

martysmartie

iTrader: (1)

Assuming your chip is not encrypted, you can just change it, as said.

Martin

Brawlsteins

Thanks Martin.

Brawlsteins

Hi all again. Another update....

Still no joy. To keep things simple I got a another L6 ECU and a new chip.
Plugged it all in and still no spark.

Plug in the L8 ECU and I have a spark.

Question is, does a L8 send and receive a spark differently to a L6......?

Many thanks, Pete.

Loomer

Nothing different, they are pretty much the same,
Does the fuel pump prime ?

Turbosystems

iTrader: (5)

The l8 has limp home the l6 doesn't

Stu @ M Developments

iTrader: (12)

Ive fixed your errors Tony.

Brawlsteins

Thanks all for all the quick replies,

Loomer, I have the fuel pump on a switch , but the relays do 'click ' when the ignition is first switched on by key.

I'm starting to think timing, hence is the L8 different to a L6 on the timing front..? Starting to clutch at straws now to be honest...

Loomer

There is no difference like that on them.
you can easily swap between the two, the components are all the same apart from the L8 having a knock sensor,and a PF09 Tps

Pull your engine loom out and send it to me to test if you like

Brawlsteins

Thanks Loomer, appreciate that mate.

I'm a sparks by trade, but car electrics is a completely different ball game..

I'll go down there tomorrow and sit with a meter belling/continuity testing the loom.
Any tips I should be looking for..? I take it for the size of cable and length of runs you looking fr no more than 2.0 Ohms...?

Still can't get my head round how one ecu will give me a spark and the other won't...

Thanks again.

Loomer

www.bigturbo.co.uk will give you some help on testing them,