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| Author | Subject: Light throttle/low revs misfire |
 coskev
Seasoned Pro  Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #1
Strange one this Light throttle/low revs(under 2k)/eng not upto temp I'm getting what feels like slight misfire  Its not a full misfire(like running on 3) Its more noticeable when I'm using Super Unleaded/V-Power too Car has had new temp sensor,re-con injectors,Gen Pug plugs few k miles ago  ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
 Posted 20th Jun 2012 at 22:04
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yippeekayay
Seasoned Pro  Location: wilts Registered: 27 Oct 2008 Posts: 4,144 Status: Offline |
Post #2
Scrap it Kev... probably a reaction to being polished so clean that mine looks a dog...coils??________________________________________ 306 less for first time in nearly 7 years. Lets keep it that way... please refuse any offers i make to buy your 306 ( doctors letter supplied by request)Marmite and cheese sandwiches anyone??? Burns and Mcrae will be forever missed. x box "yippeekayaymofo" |
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Posted 20th Jun 2012 at 22:25
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coskev
Seasoned Pro Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #3
yippeekayay wrote: Scrap it Kev... probably a reaction to being polished so clean that mine looks a dog...coils?? Banged a set of coilpacks on it few months ago,low mileage uncracked ones to replace the cracked originals Misfire clears above 2000rpm when cold,and goes once upto temp ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 20th Jun 2012 at 22:27
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #4
Intake Air Temp sensor could possibly be playing up?Sounds like it's temperature related. What other fuel do you run it on? ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone  |
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Posted 21st Jun 2012 at 07:57
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,847 Status: Offline |
Post #5
whip the plugs out when the engine is cold, see what theyre like.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 21st Jun 2012 at 11:17
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roland rat
Yeeeah Rat fans!  Location: Swansea Registered: 29 Nov 2006 Posts: 22,284 Status: Offline |
Post #6
lambda? |
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Posted 21st Jun 2012 at 11:21
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #7
roland rat wrote: lambda? Unlikely as Kev says the issue is only there on warm up and the lambda isn't used on warm up, it is running open loop.  ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 21st Jun 2012 at 15:24
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coskev
Seasoned Pro Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #8
stan_306gti6 wrote: Intake Air Temp sensor could possibly be playing up? Sounds like it's temperature related. What other fuel do you run it on? Ok ta,worth getting a used one? Normally run it on normal unleaded,performance diffrence between the two is only just noticeable,and as its a daily driver the cost is not worth it  welshpug! wrote: whip the plugs out when the engine is cold, see what theyre like. Good thinking Your thinking one plug will be sooted up more than the others? ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 21st Jun 2012 at 21:48
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #9
For the cost of the sensor I would just buy a new one mate. However, before you do that follow Welshpug's advice and do a plug chop and see what the criac is. If you have 3 decent plugs and one that's different it won't be that sensor that is causing it. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 22nd Jun 2012 at 12:58
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,847 Status: Offline |
Post #10
coskev wrote: stan_306gti6 wrote: Intake Air Temp sensor could possibly be playing up? Sounds like it's temperature related. What other fuel do you run it on? Ok ta,worth getting a used one? Normally run it on normal unleaded,performance diffrence between the two is only just noticeable,and as its a daily driver the cost is not worth it welshpug! wrote: whip the plugs out when the engine is cold, see what theyre like. Good thinking Your thinking one plug will be sooted up more than the others? possibly, or one will be rusty  ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 22nd Jun 2012 at 13:00
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coskev
Seasoned Pro Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #11
welshpug! wrote: coskev wrote: stan_306gti6 wrote: Intake Air Temp sensor could possibly be playing up? Sounds like it's temperature related. What other fuel do you run it on? Ok ta,worth getting a used one? Normally run it on normal unleaded,performance diffrence between the two is only just noticeable,and as its a daily driver the cost is not worth it welshpug! wrote: whip the plugs out when the engine is cold, see what theyre like. Good thinking Your thinking one plug will be sooted up more than the others? possibly, or one will be rusty Starts and idles perfect though from any temp Misfire is only when driving on very light throttle and not upto normal temp. Will get a air temp sensor to try ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 22nd Jun 2012 at 14:21
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coskev
Seasoned Pro Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #12
Well IAT sensor has not got rid of this Whipped plugs out,all the same colour,and only lightly sooted as I would expect when not upto temp. ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 15th Aug 2012 at 23:49
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BlackSix
Regular  Location: northampton Registered: 30 Jul 2012 Posts: 156 Status: Offline |
Post #13
if you find the solution to this, let me know bud |
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Posted 16th Aug 2012 at 01:14
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #14
Ok, so now is the time to unplug the lambda and see if the issue disappears. I would not expect the lambda to be giving sensible inputs when the engine is not up to temp, however it is free and easy for you to try and you can at least eliminate it then Kev. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 16th Aug 2012 at 10:16
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coskev
Seasoned Pro Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #15
stan_306gti6 wrote: Ok, so now is the time to unplug the lambda and see if the issue disappears. I would not expect the lambda to be giving sensible inputs when the engine is not up to temp, however it is free and easy for you to try and you can at least eliminate it then Kev. yeah will try it ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 16th Aug 2012 at 10:20
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beez_neez_gt
Seasoned Pro  Location: @ de limit of adhesion ! Registered: 14 Oct 2008 Posts: 2,916 Status: Offline |
Post #16
Did you find the answer to this problem at all ?All but one of my plugs are sooty, my misfire is intermittent, its has a popping sound too. Only misfires at low revs, once the very low revs do go up the rev range after its hesitation has passed doing a fast whip up rev range.. ________________________________________ Pug fee`ver,Pick a Bogey, buy a Pug. Black 306 GTI 6 Standard, was 60k mileage, bargain!! Clicky: [url =http://www.306gti6.com]click here[/url] remove the space between [url & = |
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Posted 18th Feb 2013 at 09:03
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daver6
Seasoned Pro  Location: Durham Registered: 08 Aug 2010 Posts: 2,379 Status: Offline |
Post #17
coskev wrote: Ok ta,worth getting a used one? Normally run it on normal unleaded,performance diffrence between the two is only just noticeable,and as its a daily driver the cost is not worth it Mine is also daily and for a pence difference, super unleaded gets me more miles, strange though that my old Astor did the opposite, ran better on poverty petrol ________________________________________ Red Rallye - Rolling "restoration"Wishbone Polybushes available |
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Posted 18th Feb 2013 at 09:15
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coskev
Seasoned Pro Location: Oswestry Registered: 01 Nov 2009 Posts: 3,132 Status: Offline |
Post #18
beez_neez_gt wrote: Did you find the answer to this problem at all ? All but one of my plugs are sooty, my misfire is intermittent, its has a popping sound too. Only misfires at low revs, once the very low revs do go up the rev range after its hesitation has passed doing a fast whip up rev range.. No From what I've worked out from different forums/people with the same issue it seems its due to the lightened flywheel,the injector timing needs adjusting due to the big difference in the weight  Someone on here had there car chipped/re-mapped with the injector timing adjusted and it sorted the pronblem ________________________________________ Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........Mac1 ZR R1 kit car build in progress. |
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Posted 18th Feb 2013 at 10:57
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beez_neez_gt
Seasoned Pro Location: @ de limit of adhesion ! Registered: 14 Oct 2008 Posts: 2,916 Status: Offline |
Post #19
Thats not good, iv not heard that fitting the light fly wheel means it has to be retimed. Does anyone have an idea where this sort of thing can be done?I didnt realise the ecu can be tuned, i thought it was set. ________________________________________ Pug fee`ver,Pick a Bogey, buy a Pug. Black 306 GTI 6 Standard, was 60k mileage, bargain!! Clicky: [url =http://www.306gti6.com]click here[/url] remove the space between [url & = |
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Posted 18th Feb 2013 at 17:18
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stan_306gti6
Forum Admin Location: Kent Registered: 18 Jan 2004 Posts: 21,769 Status: Offline |
Post #20
beez_neez_gt wrote: Does anyone have an idea where this sort of thing can be done? Someone who can re-map the ECU, so Chipwizards and the like. ________________________________________ "Supercharged - 454.1bhp/317.5lb/ft"Peugeot 306 GTi-6 2000 (X), Moonstone |
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Posted 18th Feb 2013 at 19:25
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beez_neez_gt
Seasoned Pro Location: @ de limit of adhesion ! Registered: 14 Oct 2008 Posts: 2,916 Status: Offline |
Post #21
Not just any rolling road place then, do you have a contact website or number for them at all ?I would much prefer a local place in Leicestershire or near abouts that can sort it out for me. If the remaining tests im going to do dont sort my low rev hesitation problem im gonna get a mobile technition out to do a diagnostic, it will cost me £45 and saves throwing good money after bad imo. ________________________________________ Pug fee`ver,Pick a Bogey, buy a Pug. Black 306 GTI 6 Standard, was 60k mileage, bargain!! Clicky: [url =http://www.306gti6.com]click here[/url] remove the space between [url & = |
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Posted 18th Feb 2013 at 20:40
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mike rallye
Seasoned Pro Location: mold Registered: 03 Sep 2008 Posts: 1,618 Status: Offline |
Post #22
This is intresting as i get split misfire in the morning when cold, but goes after couple of seconds. But I do get hesistation/misfire between 30 mph when cold but goes when warm.could this be down to lightened flywheel? Would a remap sort this? |
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Posted 18th Feb 2013 at 20:51
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beez_neez_gt
Seasoned Pro Location: @ de limit of adhesion ! Registered: 14 Oct 2008 Posts: 2,916 Status: Offline |
Post #23
At a guess get a diagnostic to be sure nothing else is wrong then if nothing shows up go get it remapped so injectors are set correctly.________________________________________ Pug fee`ver,Pick a Bogey, buy a Pug. Black 306 GTI 6 Standard, was 60k mileage, bargain!! Clicky: [url =http://www.306gti6.com]click here[/url] remove the space between [url & = |
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Posted 18th Feb 2013 at 21:19
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armzsc6
Seasoned Pro  Location: Crowborough Registered: 22 Mar 2008 Posts: 3,445 Status: Offline |
Post #24
My supercharged 6 is almost undrivable at times when cold misfires and splutters and coughs etc. I've changed all 4 coil packs with a spare set and made no difference. It also did this before it was charged sometimes. I work for a Citroen Peugeot garage so our code reader accesses everything and there are no fault codes at all and all sensors are working perfectly so I can only put it down to the flywheel and crank pulley on the engine. ________________________________________ Black power baby! SUUUUUPERCHARGED Seat Leon FR TDI 190BHP 300lbft daily gti-6 killer :p 12x 306's owned so far Cambelts, clutches, service work carried out on All makes and models, Peugeot Citroen / mitsubishi specialist. Pug planet / Citroen Lexia diagnostics / code reads available. |
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Posted 18th Feb 2013 at 21:55
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beez_neez_gt
Seasoned Pro Location: @ de limit of adhesion ! Registered: 14 Oct 2008 Posts: 2,916 Status: Offline |
Post #25
This must be the one main thing with so many peoples engine related problems, im surprised rich w hasnt mentioned this possible issue before, unless i missed that bit???________________________________________ Pug fee`ver,Pick a Bogey, buy a Pug. Black 306 GTI 6 Standard, was 60k mileage, bargain!! Clicky: [url =http://www.306gti6.com]click here[/url] remove the space between [url & = |
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Posted 18th Feb 2013 at 22:35
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