gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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Right the car was fine for the spirited 200 mile trip to coombe
But as soon as it exited the pit lane onto the track the mis fire came back with avengance 
So just coasted the session learning some lines.
Anyway I now have Seven days until PPC at Mallory to get it sorted 
I have changed
>coil pack
> TPS and other throttle body mounted sensors
>checked plugs
> checked and cleaned MAP
Left to check
> crank position sensor (once I find where the fuck it it)
>change fuel filter, will have to go shitrons tomorow as halfords dont have them 
Any other suggestions other the sell it on a post card 
Drives supercharged Tec with torque
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ChrisBoom
Member
Registered: 6th Dec 06
Location: Highland
User status: Offline
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Injectors, wiring fault. Id say try the injectors first, if its not that, check the loom over for breaks etc.
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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Any idea where the crank sensor is chris? Ive been told its near the gearbox and as this has been in and out in the last week and its only happened since then it could be related
On the hunt around the bay I found this was just floating around. Looks like some kind of temp sensor

All plugs looked the same as this one. Not black or white and all complete so all good as far as I am aware

Drives supercharged Tec with torque
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Jamie_Hastings1
Member
Registered: 14th Aug 08
Location: Sanquhar, Dumfries and Galloway
User status: Offline
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Crank sensor is the plastic sensor right at the gearbox/block joint.
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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Ah the thing with the big braket?
I thought that was some kind of speed sensor on the gearbox as it looked like it was on the box not the engine
Drives supercharged Tec with torque
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ChrisBoom
Member
Registered: 6th Dec 06
Location: Highland
User status: Offline
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quote: Originally posted by gavin18787
Ah the thing with the big braket?
I thought that was some kind of speed sensor on the gearbox as it looked like it was on the box not the engine
Thats the one.
Might have the same sort of plug as the lambda sensor, sometimes has a square-ish plug.
Plugs look fine to me anyways.
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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I am going to look into this as its just come back from a gearbox rebuild it could have not been put in properly/damaged
Off to peugeot in a mo for a fuel filter as neither halfords or the local factors can get one dispite it been the same one used on a shed load of the models 
[Edited on 26-04-2010 by gavin18787]
Drives supercharged Tec with torque
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AlexW
Member
Registered: 25th Oct 08
Location: Essex
User status: Offline
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Hope ya get it sorted, will keep an eye out for the saxo next weekend.
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Jamie_Hastings1
Member
Registered: 14th Aug 08
Location: Sanquhar, Dumfries and Galloway
User status: Offline
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I have a set of injectors if needed.
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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Fuel filter on petrol hurts like fuck when it gets in your eyes 
Cheers jamie but I have a spare inlet with fuel rail and injectors on in the shed iirc 
Drives supercharged Tec with torque
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Ian W
Member
Registered: 8th Nov 03
Location: Wirral, Merseyside
User status: Offline
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I found my injector problem by checking the resistance of them with a multimeter, built myself a decent rail out of two and been fine ever since.
Before I figured out it was the injector I did most of what you have already done...
Clean TB and all sensors
New map
new fuel filter
new plugs
new coilpack
[Edited on 27-04-2010 by Ian W]
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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Was yours an intermitant mis-fire at high rpm too ?
Drives supercharged Tec with torque
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Ian W
Member
Registered: 8th Nov 03
Location: Wirral, Merseyside
User status: Offline
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quote: Originally posted by gavin18787
Was yours an intermitant mis-fire at high rpm too ?
Started off like that, eventually got to the point where it was only running on 3.
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Butler
Member
Registered: 2nd Jun 05
Location: London
User status: Offline
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Didnt know you were coming to Mallory Gavin. Good luck getting it sorted, the Mazda came back with problems on saturday, hats off to you for not dumping it at a garage on monday morning like I did
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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Would have done if I had any faith in them but seeing as the last time it went in there it came back with the mis-fire 
Its running fine at the moment but dont know how long for as I thought I fixed it last time only for it to fuck up at coombe 
Fingers crossed anyway as there is not alot I can do between now and then now
Drives supercharged Tec with torque
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NovalutionGSi
Member
Registered: 20th Feb 07
Location: East Poringland, Norfolk
User status: Offline
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May have missed this but is it a Fire on 3 Misfire or a fire on 2?? Other half's GTi had 1 injector go down, but as the management works in pairs it took its pair down as well so ended up running on 2.
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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Not sure how would I tell?
Hasnt done it since I changed some bits so far 
Drives supercharged Tec with torque
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Mertin
Member
Registered: 12th Oct 05
Location: Scotland
User status: Offline
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Take it the crank sensor was ok then?
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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was dirty so cleaned it and put it back, not sure if that would have helped or not.
Might just be faulty, but if it was I would expect a error code or something to flash up
Drives supercharged Tec with torque
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NovalutionGSi
Member
Registered: 20th Feb 07
Location: East Poringland, Norfolk
User status: Offline
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When the Pug's went it took 2 garages about 3 weeks to find it, it was only found with someone who knew what they were looking at on the Diagnostics!
If it was running on 2 you would know about it as it would be gutless!
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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Apart from when the misfire occurs it still feels as fast as it always has. Even why it does mis it pulls hard until it does.
Anyway touch wood it hasnt done it since I fiddled with it the other day 
Drives supercharged Tec with torque
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NovalutionGSi
Member
Registered: 20th Feb 07
Location: East Poringland, Norfolk
User status: Offline
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Well from what you've said i doubt the Injectors will be causing the Misfire when its there.
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gavin18787
Premium Member
Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
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yer as its so intermitant im still going to blame a sensor of some kind if it pops up again
Drives supercharged Tec with torque
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Fad
Member
Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
User status: Offline
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I reckon its the ECU
I think a set of Matches will sort this puppy out
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P1CK4D
Member
Registered: 19th Jun 06
Location: Around Essex Somewhere
User status: Offline
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quote: Originally posted by Fad
I reckon its the ECU
I think a set of Matches will sort this puppy out
He has a good point.
Jap FTW.
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