South East Scoobies

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-   -   No spark (http://www.southeastscoobies.co.uk/vbulletinforum/showthread.php?t=5856)

Jolly Green Monster 16-09-2010 09:31 PM

the ecu won't trigger injectors without triggering spark.. therefore if the same on two ecus then it is unlikely to be an ecu fault (unless something on the car has damaged both ecus which is highly unlikely) therefore it has to be coilpack or wiring.
Unlikely to be leads as not going to get all four fail at once, it would run on two cylinders.

It would be strange for coilpack to fail but possible.. could well be wiring issue to coilpack.

From memory the coilpack has 3wires to it.. 12v and then the trigger wire for front two cylinders and rear two cylinders. check there is 12volts with ignition turned on, on the from memory yellow with red trace.. and the other two wires are red and a blue iirc.
Simon

Legacydan 16-09-2010 09:36 PM

Just a quick one, did you plug the coilpack wiring back in?

Jolly Green Monster 16-09-2010 10:00 PM

Quote:

Originally Posted by Legacydan (Post 61828)
Just a quick one, did you plug the coilpack wiring back in?

I was trying to be more subtle..

chuckle chortle!

Simon :D

Greig 17-09-2010 06:09 PM

Got new coil pack no joy
power fc says airflow at 1040 mv and doesn't change when turned over
it also said injector duty 0 percent and ignition timing is 21 degrees?
:fool:

Greig 17-09-2010 06:31 PM

Also the front two plugs are a lot wetter than the rear two

Nige 17-09-2010 07:07 PM

Bloody hell mate you seem to be having a right mare with this car. Hope one of the above guy's helps sort things for you. Did your brother sell my old bug? :drive:

Greig 17-09-2010 07:19 PM

Quote:

Originally Posted by Nige (Post 61896)
Bloody hell mate you seem to be having a right mare with this car. Hope one of the above guy's helps sort things for you. Did your brother sell my old bug? :drive:

Yes unfortunatly, first person who rung up came to see it and payed full asking price, said he's been to see loads and it was the best one he'd seen by miles!
Apparently it's going to be used for hill climb events.
Was an awesome car but he wanted some money for a house,

it's getting a bit annoying now as it was all back together nd now it's apat again!
Hopefully I'll get it sorted somewhen :)

how's the evo? Any more mods to it yet?
Have you done any more track days?

Scott.T 17-09-2010 09:18 PM

you mentioed earlier that there is 12v to the coil pack. You could try measuring the ecu sigal wires that aslo connect to the coil. According to the chart above these should measure 3.4v max. Try taking a reading at the ecu and also at the coil.

I can't remember fully but is the coil pack connector/harness part of the inlet manifold harness that comes off complete with the inlet and fuel rails i.e you can lift the whole thing off as a complete item..
Whe the inlet is removed you have to disconnect the harness from the main loom over by the battery.

If so could also be worth buzzing through the ECU ignition signals to this connector block, incase some pins have been pushed back or something has trapped and cut or earthed these signal wires.

Legacydan 17-09-2010 09:19 PM

Greig if you want me to pop down next week & have a look for you I have a spare couple of days Tuesday & Wednesday.

Dan

Jolly Green Monster 17-09-2010 09:29 PM

so if you have rpm on the commander but injector duty 0 and maf not moving.. I suspect it is seeing the crank rotating and the trigger but not the cam.. it is not going into proper sync and is not 100% sure when to injector and spark so is doing nothing.

The cam sensor plug / injector number 2 been discussed already?

cam wheel or crank triggers damaged?

Simon

Scott.T 17-09-2010 09:33 PM

Quote:

Originally Posted by Jolly Green Monster (Post 61905)

cam wheel or crank triggers damaged?

Simon

Does only the one cam wheel have the pick-up ?
Can the cam wheels be fitted to different cams i.e the one where the sensor is is the wrong cam wheel with no pick-up ??

Jolly Green Monster 17-09-2010 09:35 PM

yes only one cam wheel, one with the cam sensor over it.. passenger side inlet cam.

They are all marked but yes it is possible to do that.

Simon

Legacydan 17-09-2010 09:45 PM

Yes simon already said about cam & injector plugs mixed up. Like you say though it could be very possible that the cam sprocket could be in the wrong position. The inlet & exhaust on the n/s are identical apart from the pick ups on the back.

Scott.T 17-09-2010 09:46 PM

Quote:

Originally Posted by Jolly Green Monster (Post 61907)
yes only one cam wheel, one with the cam sensor over it.. passenger side inlet cam.

They are all marked but yes it is possible to do that.

Simon

Time to take those Cam covers off again then Greig and check the Cam wheel

Simon, is the pick-up easy to spot on the wheel...probably a bit more obviouse then my old RS1600i that just had a slightly larger tooth on the Flywheel.

Legacydan 17-09-2010 09:49 PM

Quote:

Originally Posted by SilverSurfer (Post 61911)
Time to take those Cam covers off again then Greig and check the Cam wheel

Simon, is the pick-up easy to spot on the wheel...probably a bit more obviouse then my old RS1600i that just had a slightly larger tooth on the Flywheel.

Easy to spot, if they are plastic sprockets they will have metal pick ups on the back if they are metal they will have pick ups at various intervals on the back.

Jolly Green Monster 17-09-2010 09:57 PM

what Dan said

Nige 17-09-2010 10:28 PM

Quote:

Originally Posted by Greig (Post 61897)
Yes unfortunatly, first person who rung up came to see it and payed full asking price, said he's been to see loads and it was the best one he'd seen by miles!
Apparently it's going to be used for hill climb events.
Was an awesome car but he wanted some money for a house,

it's getting a bit annoying now as it was all back together nd now it's apat again!
Hopefully I'll get it sorted somewhen :)

how's the evo? Any more mods to it yet?
Have you done any more track days?

Good man & he made a little profit. Tell James he owes me a pint:chug:
Don't think i will be doing any track days this year as ££££ is a bit tight. Will be all go for next year though. Have some plans for the old girl. Looks like you might be getting closer to solving you car probs mate. Good luck :drive:

Greig 18-09-2010 09:31 AM

Morning technical help :)
have checked the cam sprockets, all right inlet and ex correct
have 3 plastic wheels and the inlet on the cam with sensor is metal with lumps on the back pick ups?

Got dads mate having a quick look this afternoon
he's a auto sparky, but if no joy then can I still take you up on the offer for next week? Thanks for all your help :)

Legacydan 18-09-2010 11:07 PM

Yep not a problem at all Greig!!! Let me know if your dads mate has no joy. :ok:

Greig 20-09-2010 08:47 AM

Dads mate has traced it through, appears to be cam shaft sensor so will order a brand new one today and fingers crossed:)
thanks for all the help everyone hopefully it'll work

Anger 20-09-2010 08:55 AM

hope that sorts it mate

worzel 20-09-2010 11:08 AM

This has to be said.

I have watched this thread progress all the way through and to say I'm impressed by the level of help and guidance offered is an understatement. :nod:

Fantastic job guys, it's great to see members and mods helping each other like this :ok:

Greig 20-09-2010 12:46 PM

Yes really apriciate all the help, after all the trouble I've had with the engine build from before to finally Finnish it and it not to start, felt like giving up!

Everyone has been so helpful has given me the enthusiasm to Finnish it:)
beers all round when I see any of you at a meet:)
thanks again

Scott.T 20-09-2010 12:48 PM

I thought you had tried the sensor ?
12V pulse from the injector connector wouldn't of helped it much.

Greig 12-10-2010 06:13 PM

Does anyone know if plugging the injector and cam sensors in the wrong
way would have damaged the ecus?
Still no joy with it, feel like breaking it at the mo :(

Nige 12-10-2010 11:24 PM

Mate you must be pulling your hair out! Hope things work out. Now sounds like you may have to ask one of the mappers to investigate. :drive:

Scott.T 13-10-2010 01:19 PM

Quote:

Originally Posted by Greig (Post 63547)
Does anyone know if plugging the injector and cam sensors in the wrong
way would have damaged the ecus?
Still no joy with it, feel like breaking it at the mo :(

I doubt it.
I could imagine the injector pulse damaging the Cam sensor, becuase the ECU would be sending out a 12v pulse to fire the injector, or it has 12V applied and the firing is done on the negative side. Therefore potentially damaging the sensor.

But the injector that the cam sensor connector was attached too would of done nothing to induce anything back into the ECU.

Greig 11-11-2010 08:31 AM

Happy days :)
after replacing cam and crank sensors cam and crank pulleys still no joy so stripped it all back down,
rebuilt it all and it lives once again :)
so nearly scrapped it after 18 months of probs and
shed loads of cash!

I'll be rebuilding the rest of the car at the weekend
then mot and orginize a running in map.

Thanks for everyones help :ok::yeah::hurrah:

BIG"E" 11-11-2010 08:49 AM

Brilliant news.:ok:

So what was the problem then ?



Or should I not ask.

Jolly Green Monster 11-11-2010 09:00 AM

well done, so do you know what was actually at fault?

admin 11-11-2010 09:19 AM

Glad you got it sorted, hope the strip and rebuild helped find whatever the issue was?

Nothing worse than putting it all back together again, in the same way and it works!!!

Greig 12-11-2010 08:13 PM

Think it was. A wiring issue with the three connectors that do injectors and cam shaft sensor.
Can take the car apart with my eyes shut now!!
Will be nice to drive it again after nearly 2 years:(

Scott.T 12-11-2010 08:17 PM

Well done Greig.
Was it the connector blocks by the batery then ?
The ones you disconnect to remove the manifold and ancillaries from the block/heads.

Jolly Green Monster 13-11-2010 12:23 AM

nice one


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