C20xe help urgent!!

[Jamie-McKay]

Done a c20xe conversion on my 1.2 mk1 saloon which was a carb model. Had this problem for weeks now and losing my patience with it. Engine will turn over but not getting spark or power to injectors? Get power to the fuel pump and the coil though. Had 3 looms and 3 ecus also replaced crank sensor aswell. Not an earth problem I know that. I don't have a fuel tank vent valve and the wire I just sitting there if anyone knows that could be my problem also not sure where's best to run that ignition.live wire near the gearbox to?

[Adam]

Wire the ignition live to the old coil ignition live on the passenger inner wing.

[nova_saloon]

well have you connected up the black wire from the loom to the (dont qoute me) black with green stripe wire from the original cars loom?

[nova_saloon]

http://img147.imageshack.us/img147/183/xewiringct6.jpg

Wiring Guide

Right, hope I haven't forgotten any wires here, otherwise be pretty useless

This is for a DISTRIBUTOR C20XE, the dispacks are identical apart from they have on more plug for the dipack unit.



ALL WIRES/PLUGS ARE BLACK UNLESS STATED OTHERWISE

WIRES FROM THE DIAGRAM:

1- This is the wire which goes to the fuel pump, the fuel pump live. It is blue with a red trace, as illustrated.

2- This is the Fuel Pump Relay, they have a few wire going into them and only one coming out which is item 1 on the diagram

3- This is the big plug which goes into the ECU, It has a silver clip which you push down to secure the plug into the ECU, these can be tricky to master the first few times you do them!

4- These are the dash signal plugs, out of these two you will use the following wires:

BLUE- Temperature Display for Dash, to BLUE on Nova dials
BROWN with BLUE trace- ECU warning light, colour for colour on injection Nova dials/Digidash, unless it was a carb model, in which case, use the choke light as a ECU light, which is BROWN with YELLOW trace
GREEN- Tachometer (rev counter) goes to GREEN on nova dials

5- This is the gromet bung which is where the wires will go trhough to the inside of the car through a 60mm hole you drill in the bulkhead. TIP: you need to cut the tape holding the bung in place and slide it down towards the ECU plug for a better fitment

6- This is the Permanent live for the ECU, it is a red wire, in a black sheafing, it should have a ring terminal on the end, it goes to the positive side of the battery

7- this is the three pin plug for the Lambda Sensor, the line going through indicates that the plug should be around here somewhere.

8- This is the plug for the Air Flow Meter (Commonly known as AFM) Think it has 7 pins?

9- This is the coolant temperature wire, it is blue and simply pushes onto the nipple next to the Coolant Temperature Switch.

10- This is a blue plug with 2 pins, it goes to the coolant temperature switch sensor (commonly known as CTS Sensor). This is located at the front of the block by the top rad hose

11- This is the Crank Position Sensor,, it goes in the lower front face of the block, it is held in by one bolt. The line further up the loom towards the ECU indicates a plug for it

12- This Plug goes into the Hall Sensor on top of the distributor, it has 3 pins, you really cant miss this one!

13- This plug goes into the coil.

14- This is the switched live (a.k.a. Ignition Live). This should go to a 12V igtion live source, this will turn the ECU on and off with the ignition.

15- This is a 5 pin (I think?) plug which connects to the back of the block loom. It will be down by the speedo cable drive somewhere. (The loom from the back of the block should include, knock sensor, ICV etc)

16- These are earth, 3 separate wires, one on cambelt end, 2 on gearbox side, they should be earthed to the fuel rail.

17- This is the plug for the Fuel Tank Vent Valve, it is a 2 pin plug. It goes at the very end of the block, usually bolted to the bottom stud of the inlet manifold (gearbox end)

18- This is a plug for the Throttle Position Sensor (TPS) It is located on the cambelt side of the throttle body.

Other Wires

You need an earth that goes from the gearbox to the chassis.

You also need to connect the starter motor live to the +ve side of the battery

[NitrousVaux]

try the coolant temperature sensor at the front. Mine had very similar problems, took off the plastic boot and the wires were disconnected.

Give it a try!

[Jamie-McKay]

I've got that diagram. I've got it going to a black wire with a grey spade terminal on it dunno what that was from? What do you do with the temp coolant wire from the car loom?

[Jamie-McKay]

Anybody?

[Adam]

Have you got a multimeter?
Is the ecu light wired up?

You can use either the car loom coolant temp wire or the engine loom one(if there is one), as long as whichever you use is wired up to the temp gauge on the dash

[Jamie-McKay]

I don't have the light wired up to the dash yet, that wouldn't stop it from starting tho would it?

[Jamie-McKay]

Yeh I've got a multimeter

[meritlover]

Well something is wrong somewhere.
either the ecu doesnt know the engines craking, it is isnt telling the coil to spark.

If the injectors arent firing either then its either the above or something common to the inj and ign

[Jamie-McKay]

Well I've tried 3 ecus and still the same. Think it's my wiring, is there not a step by step guide on how to wire a xe into a carb model nova on here?

[Steve]

The diagram on the previous page!? I'd personally just go throught every wire you've connected so far and double check that first.

[Jamie-McKay]

I'm sure it's that ignition live wire near the box I've got wrong colour of wire should I run that to on a carb model?

[Andy]

black to black

[Martin.p]

Hi, hope you don't mind me butting in on your thread.
I've been using the diagram to wire mine up and I'm not 100% sure about number 14 (on diagram, page 1)
The switched ignition live?
Is it the single black wire seen below (one with black plug on end)
Where is a good place to wire it to?? Something switched live by ignition I guess but what?
And are the two plugs on right side of pic redundant?

http://i992.photobucket.com/albums/af46/martinstu/C7409209-F44B-4FFA-8000-375E001412C2-881-000000D240B8BF17-1.jpg