No spark, at a lost end
25 August 2012, 07:52 PM
#31
Defiantly a challenge!
Duncan did check the sensor outputs on his laptop and all was well.
It's defo something I've done as was running before it came off the road.
Does seem like a wiring problem, yes.
I have downloaded wiring diagrams and a lot of other info from here
http://www.northursalia.com/techdocs/pdf/pdf.html
http://www.northursalia.com/modifica...ng/wiring.html
Went to my local impreza breakers today and picked up all the relays inside and out which made no difference. Dale also lent me another immobiliser set to try, which unfortunately made no difference. Also changed the ignition switch on the back of the ignition barrel incase that was playing up.
However I noticed something strange, if I unplug the immobiliser completely and turn it over it still primes, cranks and sparks at the end of cranking???
Dale is coming out Tuesday night all going well for a look and to try his Subaru diagnostic computer.
Top bloke is dale @
http://www.imprezabreakers.co.uk/index.htm
I've checked most of the wiring the best I can but I'm no auto electrician by any means.
All I can do is keep going over what I've done with a fine tooth comb, but it's getting rather time consuming and agrivating now to the point where I'm happy to pay someone else to sort (within reason with cost) or even break it up!
Reading some of the PDFs I downloaded it says
As I've had the throttle body apart to paint outside, clean and polish inside have I disturbed the throttle position sensor which is causing a problem? I did put the sensor in the exact same position within reason
Duncan did check the sensor outputs on his laptop and all was well.
It's defo something I've done as was running before it came off the road.
Does seem like a wiring problem, yes.
I have downloaded wiring diagrams and a lot of other info from here
http://www.northursalia.com/techdocs/pdf/pdf.html
http://www.northursalia.com/modifica...ng/wiring.html
Went to my local impreza breakers today and picked up all the relays inside and out which made no difference. Dale also lent me another immobiliser set to try, which unfortunately made no difference. Also changed the ignition switch on the back of the ignition barrel incase that was playing up.
However I noticed something strange, if I unplug the immobiliser completely and turn it over it still primes, cranks and sparks at the end of cranking???
Dale is coming out Tuesday night all going well for a look and to try his Subaru diagnostic computer.
Top bloke is dale @
http://www.imprezabreakers.co.uk/index.htm
I've checked most of the wiring the best I can but I'm no auto electrician by any means.
All I can do is keep going over what I've done with a fine tooth comb, but it's getting rather time consuming and agrivating now to the point where I'm happy to pay someone else to sort (within reason with cost) or even break it up!
Reading some of the PDFs I downloaded it says
The ECU processes signals from the crankshaft position sensor and camshaft position sensor, as well as other engine management system inputs (throttle position sensor, coolant temperature sensor, knock sensor, etc.). The ECU then sends a
control signal to the igniter.
control signal to the igniter.
Last edited by Badger_88; 25 August 2012 at 07:59 PM.
29 August 2012, 03:41 PM
#34
Voltage was dropping very significantly whilst cranking so it is possible that faulty starter motor with a large current loss in it which is taking away needed voltage for the coilpack to work. We were getting sparks while my booster pack was connected and voltage high. And enough for it to try to start on occasion.
Cam crank and tps were all giving correct signals, showing rpm while cranking and moving normally.
Cam crank and tps were all giving correct signals, showing rpm while cranking and moving normally.
30 August 2012, 07:27 PM
#35
Cheers Duncan. I'll try another starter at some point too.
anyone got any thoughts on this? The key light isn't on on the dash but neither is it when the immobiliser is completely unplugged?
Wish I could find a wiring diagram on the factory immobiliser so I could test the wiring but there's no mention of it on any of the wiring diagrams I've seen.
Dale also lent me another immobiliser set to try, which unfortunately made no difference. Also changed the ignition switch on the back of the ignition barrel incase that was playing up.
However I noticed something strange, if I unplug the immobiliser completely and turn it over it still primes, cranks and sparks at the end of cranking???
However I noticed something strange, if I unplug the immobiliser completely and turn it over it still primes, cranks and sparks at the end of cranking???
Wish I could find a wiring diagram on the factory immobiliser so I could test the wiring but there's no mention of it on any of the wiring diagrams I've seen.
30 August 2012, 08:03 PM
#36
Found immobiliser diagram and diagnosis at last!
Thought I'd post it up for anybody else having trouble
http://www.spooledupracing.com/downl...mmobilizer.pdf
Something else to look at over weekend.
Thought I'd post it up for anybody else having trouble
http://www.spooledupracing.com/downl...mmobilizer.pdf
Something else to look at over weekend.
01 September 2012, 12:30 AM
#39
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big spark in one go? sounds like the coil ( amplifier) either that or poss leads all had it, are they routed to correct plugs. is the battery discharged ? ive found 2 scoobs i had both had flat battery after just a wk of standing
hope u get it sorted soon!!
hope u get it sorted soon!!
Last edited by sssssteeeee; 01 September 2012 at 12:33 AM.
01 September 2012, 08:21 AM
#40
That's the last thing I would have ever thought of.
I've been replacing all sorts I.e sensors, fuses, relays, immobiliser, ecu, coil pack. Checking everything I've done since its been off the road. Testing all the wiring loom. Looking for a dodgy plug, broken wire or dodgy earth. And it turns out to be a starter motor?!?!?!? WTF.?
I'm so relieved I've finally found the problem though, you wouldn't believe how close I've been to smashing it up and breaking it lol!
I also now have LOADS of spare parts which should keep me going a while
and could take a degree in auto electrics from what I've learnt over the part few months.Cheers for the input everyone it's all helped into pinpointing the problem.
Last edited by Badger_88; 01 September 2012 at 08:23 AM.
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