No spark No fuel, engine conversion - Saxperience

rich112 · 12th March 2012, 10:33

So stuck on engine conversion right now. Whole vts engine is in my 1.4 furio now, everything plugged in correctly all of the loom is in. Only thing that isnt on right now is the radiator and gear oil. The problem i have is that at the turn of the key i have no spark and no fuel priming from the pump, the car is trying to turn but goes no further. Ive tried a couple of ecus and had no immobiliser light on the dash. I seriously cant find an immobiliser box so we went ahead, i have a box under dash which is cobra for my simple alarm which im not sure would affect it. Ive been told i will probably need to get key,barrell, transponder ring does anyone think this would sort the problem? Thanks

Mochachino · 12th March 2012, 10:37

When an ECU is locked the fuel pump will still prime and the coilpack and injectors will still get power but will not operate.

If you are getting no spark and the injectors are not injecting then it would suggest a locked ECU. Fuel pump maybe an earth.

rich112 · 12th March 2012, 22:07

All earths are on I'm pretty sure of that its been triple checked.
Im thinking that the cobra alarm I have has an immobiliser and that's blocking it, any thoughts?

rich112 · 13th March 2012, 21:04

I've tried unlocked ecu guys and still no luck. Immobiliser is deifinatley out also.

rich112 · 14th March 2012, 19:00

Someone please any ideas, I'm without a car.

Beaniemoo · 14th March 2012, 19:52

Simple one but have you checked the crash switch is connected a reset?

rich112 · 14th March 2012, 20:45

Quote:

Originally Posted by Beaniemoo

Simple one but have you checked the crash switch is connected a reset?

Yeah mate, if you mean the big red button top right of bay the fuel cut off sure that's plugged in.

Beaniemoo · 14th March 2012, 20:48

Yeah thats the one, have you pressed the red button also?
So did you find your immobiliser box and disconnect it?
Do you have access to a multimeter?

rich112 · 14th March 2012, 21:01

Quote:

Originally Posted by Beaniemoo

Yeah thats the one, have you pressed the red button also?
So did you find your immobiliser box and disconnect it?
Do you have access to a multimeter?

Yeah mate tried pressing that. Immobiliser box is unplug yep.
I also have a multimeter.

Beaniemoo · 14th March 2012, 21:05

Might be worth checking which pins on the engine sensor relay (big one under the ecu) have 12v to them with the ignition on, so you can make sure thats ok.
Did you plug the big connector into the bottom of the fusebox ok?

mcjacko1987 · 14th March 2012, 21:17

bit of a silly one but check all fuses, fuel regulator also. is the fuel pump defiantly a working one?

rich112 · 14th March 2012, 21:47

Quote:

Originally Posted by Beaniemoo

Might be worth checking which pins on the engine sensor relay (big one under the ecu) have 12v to them with the ignition on, so you can make sure thats ok.
Did you plug the big connector into the bottom of the fusebox ok?

I was considering changing that relay box but your right I should multimeter them first. And with the fusebox connector I will double check that as it's a good point. Only other thought I had was tracing back from fuel cut off switch and following off every line checking them.

rich112 · 14th March 2012, 21:50

Quote:

Originally Posted by mcjacko1987

bit of a silly one but check all fuses, fuel regulator also. is the fuel pump defiantly a working one?

Fuel pump definatley was working before I put the engine in mate.

Beaniemoo · 14th March 2012, 21:55

If you can work out how the relay works by using the diagram on the side, you can earth the switching side of the relay and see then if the pump runs.
If you check which pins have ignition feeds, which one goes to the crash switch, which one goes to the fuel pump and to the coil, we could work out where your problem most likely lays

citroen_saxo_vtr · 14th March 2012, 21:56

Relay under the ecu? I would personally say the ecu as i had this problem and tried ecus and the only ecu it would run on was the original furio one.

Beaniemoo · 14th March 2012, 22:03

I very much doubt it's the ecu, I'm just trying to diagnose the problem rather that just fit components

rich112 · 14th March 2012, 22:31

Quote:

Originally Posted by Beaniemoo

If you can work out how the relay works by using the diagram on the side, you can earth the switching side of the relay and see then if the pump runs.
If you check which pins have ignition feeds, which one goes to the crash switch, which one goes to the fuel pump and to the coil, we could work out where your problem most likely lays

I think that's what I will try tomorrow night beanimoo with the relay box idea.

Quote:

Originally Posted by citroen_saxo_vtr

Relay under the ecu? I would personally say the ecu as i had this problem and tried ecus and the only ecu it would run on was the original furio one.

tbh I don't think it's ecu related as I've tried 3 separate ecus.

Beaniemoo · 14th March 2012, 22:37

Wish people having these problems were closer, I'd happily pop over and help out

rich112 · 14th March 2012, 22:39

Quote:

Originally Posted by Beaniemoo

Wish people having these problems were closer, I'd happily pop over and help out

I wish also lol. I would like a smooth tucked bay like your old one

Do you think earths could be an issue?

Gandi699 · 14th March 2012, 23:06

Check all the earths, that relay and crank sensor. Test the pump by pulling the its power feed plug off and wiring it to directly to a live and earth from the battery - if the engine starts when the pump is running then you know you are getting spark as well as fuel.