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 Posted: Thu Sep 20, 2012 1:35 am |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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My issue is only when starting, and only when cold and maybe rough idle just after it starts. Warm starts are alright and no cutting out.
Would this still point to a crank sensor?
Absolutely. The ECU needs to detect engine is rotating and going at minimum rpm before it will allow fuel and ignition. If it's missing engine pulses then it thinks it hasn't reached that minimum rpm and car isn't allowed to start. It doesn't fire up a fault code because it doesn't detect there's anything wrong with the crank sensor because there isn't anything wrong with its circuit. It's just waiting for the engine rpm to come up and waiting and waiting 
When everything is heated on a warm engine and flywheel is expanded then it's picking up the pulses no problem and the engine is allowed to start as normal and runs fine
Sensor position is in line with the flywheel
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Posted: Thu Sep 20, 2012 5:11 am |
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Joined: Jun 21, 2011
Posts: 17
Trade Rating: 0
Location: Sydney
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Great- crank sensor it is. I'll post back with the results. Thanks for the assistance
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| 2002 206 GTi
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1999 206 GTi
2005 206 GTi 180 | |
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Posted: Sun Dec 02, 2012 3:39 am |
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Joined: Jun 21, 2011
Posts: 17
Trade Rating: 0
Location: Sydney
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Ok so got myself a new crank sensor, and removed the old one that was absolutely caked in gunk.
Wit high hopes I started it cold this morning but to no avail- still a hesitant start and the revs only stayed at 1200 for 5 or so seconds before dropping to 1000. When I started it it again very briefly flashed up anti pollution fault but still the engine light is not on. I'm starting to believe it could be coil pack related, or if not pressure regulator.
Any other thoughts?
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| 2002 206 GTi
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1999 206 GTi
2005 206 GTi 180 | |
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Posted: Sun Dec 02, 2012 4:17 am |
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Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage
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| Deckchair5 wrote: |
When everything is heated on a warm engine and flywheel is expanded |
That's the best thing I've heard in ages.
The flywheel is a solid lump of steel which won't expand in the slightest and it doesn't even get that hot!
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| 2001 GTi 138, Bilstein Sprint dampers, H&R springs, 21mm Peugeot Sport torsion bars, 22mm rear ARB, Peugeot Sport Group A wishbones, 283mm discs, Goodridge stainless hoses, Maniflow 304 grade 4-2-1 2.5" manifold and system, 200 cell cat, Richard Longman head, 45mm Jenvey throttle bodies, 9.5mm TB spacers, 90mm air horns, Jenvey throttle linkage, Jenvey fuel rail, Aeromotive and Goodridge fuel fittings and braided hose, ITG sausage filter, Radtec custom radiator, Piper Ultimate Road cams, Piper vernier pulleys, Omex 600 ECU. Saxo electric PAS pump, Vibra Technics engine mounts. Samco coolant hoses, TTV steel flywheel, 4.76 final drive ratio, 307 CC 180 ratios. 2019 BMW 530i. 2017 Mercedes C300 convertible. | |
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Posted: Tue Dec 04, 2012 7:56 am |
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Joined: Apr 19, 2012
Posts: 529
Trade Rating: 0
Location: darlington
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Do u get any extra drop off of revs if u turn electrics on at this stage???poss.battery/charging circuit fault???turn on lites a.c.radio etc when cranking or experiencing the problem to check...
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Posted: Tue Dec 04, 2012 7:32 pm |
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Joined: Jun 21, 2011
Posts: 17
Trade Rating: 0
Location: Sydney
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| bezford wrote: |
| Do u get any extra drop off of revs if u turn electrics on at this stage??? |
No- and I have occassionally taken the battery out to trickle charge it, so the battery is still strong after 2 years.
I am at my wits end with this thing- no codes don't help obviously. One thing I was thinking about is that it has 135k kms on it (75k miles) and I certainly haven't had the injectors cleaned since I've had it for 6 years.
Any views on if getting the injectors cleaned would help a hesitant start?
It very occasionally misfires after it has been started...
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| 2002 206 GTi
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1999 206 GTi
2005 206 GTi 180 | |
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Posted: Wed Dec 05, 2012 8:18 am |
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Joined: Apr 19, 2012
Posts: 529
Trade Rating: 0
Location: darlington
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Possibly but dirty injectors would be more a diesel fault i think...i will study the haynes ive just got.
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Posted: Wed Dec 05, 2012 7:26 pm |
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Joined: Jun 21, 2011
Posts: 17
Trade Rating: 0
Location: Sydney
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hey bezford, thanks for taking the time. I put a bottle of injector cleaner through a few days ago and it really has not made a difference, so I can safely stop thinking about that.
One other thing I was thinking about is the fuel pressure. I said before that I think the regulator is in the actual fuel pump, unlike a sperate one for diesels. The only problem with this car is a cold start, and VERY occasionally it flashes up (by half a second) APF and then dissappears.
Would I be right in thinking that it flashes APF (anti poll.) due to the fuel pressure being low, and then once it cranks and starts the pressure returns to normal? The EML has NEVER flashed nor remained on...
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| 2002 206 GTi
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1999 206 GTi
2005 206 GTi 180 | |
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Posted: Tue Jan 22, 2013 5:26 pm |
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Joined: Jan 22, 2013
Posts: 3
Trade Rating: 0
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Hi guys I'm bit new to pug scene been a jap man but cheap 206 gti came up just as I lost heart In my old civic. Anyways I've rebuild the engine on my drive and kinda have a fault I can't place gut telling me map sensor? When I start up its powerless under 2k  and tries to die? Sorry for thread jacking!
Your probably sounds a lot like my mates turned out to be faulty O2 sensor!
Oh forgot to say my gti is a 1999 pre multi plex I believe?!
Thanks info is u can
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