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Author: Subject: St170 fuel injection on a budget project.
big_wasa

posted on 11/10/12 at 07:52 PM Reply With Quote
quote:
Originally posted by Lingy
Would i not need the dash loom then?


I dont think it will be needed. You could add sensors for your dash or you can get gauges that run the can-bus system, scan dash is one that springs to mind.

quote:
Originally posted by Lingy
What sort of money would it cost to get a loom sorted
For my mk1 ?


Not got a scooby doo as I havnt got this one done yet. I just dont know how happy the ecu will be with out talking to the other systems on the Can-bus.

Ive just bought 20 meters of heat shrink tubing so I can start hacking into the loom this weekend depending on work.

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Lingy

posted on 11/10/12 at 08:20 PM Reply With Quote
Its a shame your so far away,But if theres a way I'm very interested
In having mine sorted out ,I want the vvt to work as it should ...

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big_wasa

posted on 11/10/12 at 08:37 PM Reply With Quote
Yeh shame as I havnt got the full engine yet, If yours was ready to go yours could have been the test donky

I would have done the work and the only cost to you would be to see some dyno and emissions results.
How far along is your project ?


[Edited on 11/10/12 by big_wasa]

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Lingy

posted on 11/10/12 at 09:17 PM Reply With Quote
Im at the stage of mocking the engine and box in the bay

Plenty of parts needed yet though

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johnH20

posted on 12/10/12 at 10:11 AM Reply With Quote
Hi big wasa, got my TIS off ebay like you many years ago. Not the easiest thing to navigate but there is a lot in there if you can find it. I found the 'connector view' particularly useful for tracing all the plugs and selecting what to eliminate.
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big_wasa

posted on 12/10/12 at 02:23 PM Reply With Quote
I've got that with autodata, info is a bit thin on the st.
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Lingy

posted on 13/11/12 at 04:35 PM Reply With Quote
Any news on this chap?
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big_wasa

posted on 13/11/12 at 05:55 PM Reply With Quote
Work has been really busy but I have bought a cheap fuel pump and a few more bits and bobs. I hope to get a few hours on it this week end.
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Lingy

posted on 13/11/12 at 06:10 PM Reply With Quote
Brilliant ,I have the engine ready to go in ,Just been modding the sump and
Mounts ,Long way off yet,Just wanted to ask incase you had got any further with it ,

Cheers

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carlknight1982

posted on 17/11/12 at 01:02 PM Reply With Quote
Good luck with this Warrenl, Ill be watching with intrest ive just brought a St170 to fit into my roadster but im planning on Jenveys and Omex for my install next winter.

Carl





Logic will get you from a A to B
Imagination will take you everywhere.

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big_wasa

posted on 18/11/12 at 08:56 PM Reply With Quote
Ive done a marathon session on the wiring loom this week end.

I "think" I have traced back and worked out the colour and function of every pin on the st170 ecu loom.

Now starts the work of choping the loom up and removing the bits I dont want and rebuilding the loom to fit my kitcar.
I am finding twice as many functions means twice as much work

If any one is thinking of having ago ? then the only plug you need of the car loom with the fuse box is the plug for the Imrc.

On the gearbox loom you want the pre o2 sensor plug and the cps plug.

On the dash board loom there is the tranceiver plug and the obd2 port. I just robbed these two from a mk3 mondeo.



[Edited on 18/11/12 by big_wasa]

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Lingy

posted on 1/1/13 at 04:17 PM Reply With Quote
Any more updates bud ?
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big_wasa

posted on 1/1/13 at 04:39 PM Reply With Quote
Winter is my super busy period at work so ive only touched it, to move it

The loom is nearly finished and ive sourced other bits for the static engine but I still havnt found a cheap local engine.

Should be ready to bench test the loom in the next week or so.

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Lingy

posted on 1/1/13 at 05:03 PM Reply With Quote
Good luck i hope you can get it working stripped down
As it would control the vvt as it should

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big_wasa

posted on 1/1/13 at 07:07 PM Reply With Quote
quote:
Originally posted by Lingy
Good luck i hope you can get it working stripped down
As it would control the vvt as it should


There would be no point otherwise.

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Lingy

posted on 1/1/13 at 07:11 PM Reply With Quote
Haha yeah ,You might get swamped with people wanting them if it works properly



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big_wasa

posted on 12/1/13 at 09:44 PM Reply With Quote
And we have progress. It was cold out side, the wife was at work and the kids where glued to some silly xbox game so I had the afternoon finishing my wiring loom.

A quick check over and I had to see if I could make it fire. I dont have an st engine yet so I slapped it on the silvertop.

Its running in very much a limp home mode as the sensors that are conected are only sat on top of the engine bar the crank / cam / coil.

The reasons for this again is getting the st engine to run in a 7 on a budget with the vvt and dsi that will go well and meet iva emisions.
And when I say budget, ive been paying <30 for ecu's.

Still lots to do..... But looks promissing.



[Edited on 12/1/13 by big_wasa]

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Lingy

posted on 13/1/13 at 02:50 PM Reply With Quote
How will you byepass the dash /Petrol pump and all the other sensors etc ?
Surely It will only ever run in limp mode while the ecu is looking for the sensors ?

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big_wasa

posted on 13/1/13 at 04:01 PM Reply With Quote
What do you mean by bypassing the dash ?

What do you mean by bypassing the fuel pump ?

Most of the dash gets its info by canbus by the same conection from the ecu as the obd2 port. For a bench engine I can conect a bluetooth dongle and have a vertial dash on a tablet pc and use the Torque software. Or being cheaper I can wire it up to the garage pc like I did with the dta.

http://youtu.be/PzaIcZVmEtg

In car you could run one of the obd2 style dials or add extra sensors for any dials you like.

Fuel pump, Ive been looking a lot at this and have butchered a perfectly good st170 pump to see what makes it special. The answer is not a lot.

You have a pump and a one way check valve. There is a tube down to a bit of plastic with a tiny tiny hole that looks like it bleeds the presure in the pump when its not running.

The St170 Is returnless for emissions reasons. It has a driver and a fuel presure sensor in the rail.

My plans for the fuel system are an external setup, so out of the tank / swirl pot into a filter, to a pump to a check valve to a filter and to the fuel rail with the st170 driver running the pump and the ecu controling the driver.

Drivers are cheap and fuel presure sensor comes on the fuel rail so hapy days.

Its still early days as untill I can get an engine and bench run it I cant tell if the ecu will need any info from other items along the can bus.

Unlike older fords there is very little in the way of emisions extras to mess about with. No egr ect. So I am using nearly all the sensors found on the engine. I will bin the canister purge and give the ecu a dummy load.

But we have progress in that its running.

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big_wasa

posted on 13/1/13 at 04:17 PM Reply With Quote
For the test the engine sensors/ actuators where pluged in but not showing all the corect data to the ecu.

ie

The fuel presure sensor would see no presure.

The maf would see no air flow.

The Tps would show the corect value for idle.

Both O2 sensors are sat in fresh air but they wouldnt be needed untill it runs closed loop.

Imrc and the fuel pump driver where not pluged in.

Barometric sensor was plugged in, aswell as canister purge.

Iat would read fine so would the Ect

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Lingy

posted on 13/1/13 at 04:56 PM Reply With Quote
Its just what reading up lead me to believe ,I know nothing about car electrics
What you have done already is way beyond me ,Good work ,Its a pity theres no one local to you who has an ST
To test it out on .

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big_wasa

posted on 13/1/13 at 05:45 PM Reply With Quote
I will get one but ive just spent lots of dosh on the tintop brakes and xmas and other stuff.

Can you get the standard inlet into your project ?

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Lingy

posted on 13/1/13 at 07:05 PM Reply With Quote
I am going to try ,I have been talking to a guy who is using his ,Although hes stripped a few things off it to get it to fit upside down
I just need some longer 50mm silicone ,Im not sure i can use it if i have to connect everything up

^ this has to come off and the holes will need sealing ,Any idea what it is
Also the air tract lever needs to be locked fully open ?
Using the oe loom hopefully these parts are s not needed ? Or its got to be aftermarket ecu

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big_wasa

posted on 13/1/13 at 07:42 PM Reply With Quote
Yeh there needed. The first item is the idle control valve and if the dsi doesnt work it will go into limp home mode and if you make the ecu think its working the map will give you no bottom end torque.
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Lingy

posted on 13/1/13 at 07:54 PM Reply With Quote
Its got to be the aftermarket ecu then .Cheers

[Edited on 13/1/13 by Lingy]

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