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displaying posts 1 to 25 of 29
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| Author | Subject: engine flat spotting |
 foot
Senior User  Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #1
ok so when starting the car from cold i pull away in first gear and as i put my foot down there is no power or acceleration nothing happens then after a few seconds things go back to normal it only happens when starting from cold and in like first and secondany ideas what it could be |
 Posted 7th Aug 2010 at 20:50
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da g man!
Regular  Location: Kent Registered: 15 Jan 2006 Posts: 320 Status: Offline |
Post #2
I'm getting exactly the same thing mate, been fine until recently, then just started doing it.I suspected coil packs at first, so bought 4 brand new ones (done 108,000, so was prob due a change anyway) but that didn't solve it. Spark plugs are brand new (NGK Irridiums). My next route will be either the Lambda Sensor, because this can cause simular symptoms + the car will drink like a fish, which mine seems to be doing or the Map sensor. I was worried that it might be early stages of a head gasket failure, but I done a compression test on it & all was good, but the only real test would be to do a Leak Down Test, but I'm confident that its not that. I have been given a TPS to try, but I don't think it is that either, because it would do it all the time, not just when it's cold. My betting is that it is the Lambda, but if I solve the problem before you, then I'll be sure to let you know & vice versa would be appreciated please mate  |
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Posted 7th Aug 2010 at 23:06
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foot
Senior User Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #3
yer sure thing make thanks for the update on ur problem and i will let you no as soon as i have solved it my end i think im going to be having it put on a diagnostic machine towards the end of the week so that will read all the sensors so hopefully its not something major expensive and we can both fix it very soon |
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Posted 7th Aug 2010 at 23:20
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #4
if it doers it straight from cold it wont be the lambda.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 7th Aug 2010 at 23:22
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foot
Senior User Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #5
usually does it about 2 junctions from my house first thing in the morning |
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Posted 7th Aug 2010 at 23:32
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da g man!
Regular Location: Kent Registered: 15 Jan 2006 Posts: 320 Status: Offline |
Post #6
welshpug! wrote: if it doers it straight from cold it wont be the lambda. Really?? Why's that then mate?? I thought the Lambda was working 24/7 to monitor the air/fuel ratio?? Whats your thoughts on the problem then mate, are you able to shed any light on this for me & Foot?? |
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Posted 7th Aug 2010 at 23:56
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #7
Most likely to be TPS or possibly a sticky idle valve.the Lambda only works when it has warmed up, until then the ecu disregards the reading from it, what temperature that is I'm not sure though. ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 8th Aug 2010 at 00:01
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foot
Senior User Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #8
ok so my car has now starting hunting on idle and on acceleration there is a very very high pitched whistle any helpful ideas ??? |
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Posted 11th Aug 2010 at 22:57
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mabgti
NV motors  Location: Bham tunnel @7400rpm Registered: 28 Aug 2003 Posts: 9,127 Status: Offline |
Post #9
TPS ________________________________________ Team Supercharged Gti-6NV Motorsport Automotive Performance Tuning 0121 448 7515 ECU Remapping/ DPF removal VAG/BMW Diag and Option Coding Peugeot Planet ECU coding/transponder programming etc www.nvmotorsport.com Facebook Page Project S6 |
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Posted 11th Aug 2010 at 23:22
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foot
Senior User Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #10
cheers ill get one sorted asap |
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Posted 11th Aug 2010 at 23:29
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mabgti
NV motors Location: Bham tunnel @7400rpm Registered: 28 Aug 2003 Posts: 9,127 Status: Offline |
Post #11
but check for vac leak... re tighten inlet manny.. and check your airbox..________________________________________ Team Supercharged Gti-6NV Motorsport Automotive Performance Tuning 0121 448 7515 ECU Remapping/ DPF removal VAG/BMW Diag and Option Coding Peugeot Planet ECU coding/transponder programming etc www.nvmotorsport.com Facebook Page Project S6 |
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Posted 11th Aug 2010 at 23:39
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foot
Senior User Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #12
I take it the air box is the one under the inlet mani and I'll do both cheers |
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Posted 12th Aug 2010 at 00:04
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foot
Senior User Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #13
ok checked both and they both seemed all ok although the hunting idle has now seemed to turn into a very lumpy idle ??? |
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Posted 12th Aug 2010 at 01:38
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foot
Senior User Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #14
ok so i have now changed Inlet manifold and Throttle body different TPS and Map Sensor cleaned the ICV and still the problem carries onAny other ideas? |
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Posted 18th Aug 2010 at 00:53
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #15
have you actually checked if the sensors work?________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 18th Aug 2010 at 01:22
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foot
Senior User Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #16
How could I test them all? |
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Posted 18th Aug 2010 at 02:43
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mabgti
NV motors Location: Bham tunnel @7400rpm Registered: 28 Aug 2003 Posts: 9,127 Status: Offline |
Post #17
seems like one for a mechanic...but in all honesty... you should either get sensors checked on a live data stream with a diagnostics kit or get a multimeter out and check the resistance/voltages etc ________________________________________ Team Supercharged Gti-6NV Motorsport Automotive Performance Tuning 0121 448 7515 ECU Remapping/ DPF removal VAG/BMW Diag and Option Coding Peugeot Planet ECU coding/transponder programming etc www.nvmotorsport.com Facebook Page Project S6 |
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Posted 18th Aug 2010 at 04:18
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willygti
Seasoned Pro  Location: Exeter Registered: 08 Oct 2007 Posts: 5,024 Status: Offline |
Post #18
Cracked resonator (black box underneath inlet manifold)? ________________________________________ Team Ducati 7482003 Subaru Impreza STi |
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Posted 18th Aug 2010 at 04:24
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #19
rear the FAQ!!!!________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 18th Aug 2010 at 04:32
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foot
Senior User Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #20
I've had the faults read on the car and cameOut with map sensor so changed it and I'm going To read the faults again now and I think I will take the resonator out and swap it for the blanking plate I had on a while ago although heard bad things about them. |
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Posted 18th Aug 2010 at 15:43
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adam b
Seasoned Pro  Location: The Nam Registered: 24 Jan 2006 Posts: 12,828 Status: Offline |
Post #21
Nah the resonators are fine if they aren't cracked.________________________________________ Nothing to see here |
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Posted 18th Aug 2010 at 15:53
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mark-house
Seasoned Pro  Location: Bury St Edmunds Registered: 07 Apr 2009 Posts: 1,096 Status: Offline |
Post #22
When did you last have the cam belt changed might have slipped half a tooth. ________________________________________ Peugeot 306 GTi 6BMW 320 td compact M-sport 1967 Mini Cooper 1990 Jaguar XJR 4.0 |
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Posted 18th Aug 2010 at 17:39
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foot
Senior User Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #23
I was talking about the metal resonator blanks being bad and the belt was last changed about 15k ago would that effect only when cold then would of thought that would be no matter the engine temp?? |
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Posted 18th Aug 2010 at 18:01
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mjstones
Seasoned Pro  Location: straight outta compton Registered: 16 Oct 2007 Posts: 1,233 Status: Offline |
Post #24
mine does a similar thing when cold, feels a bit like it's running out of petrol (ps, it's not running out of petrol) but the problem goes away after a real short bit of driving and it's fine after that. but in a morning or after it's been left for a while it's shite. ________________________________________ Never underestimate the power of De-Nile.Friday afternoon car, built in France....  306gti6.com Stickers available, pm me for details. or email MjStones83@hotmail.com Sticker Thread with pics |
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Posted 20th Aug 2010 at 02:33
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foot
Senior User Location: worthing Registered: 09 Aug 2008 Posts: 754 Status: Offline |
Post #25
yer exactly the same problem here mate im going to change all the coil packs 1 by 1 starting tomorrow and start with a new set of plugs see if that solves the problem im also getting all the faults read to see if there are any new ones ill keep this up to date with my progress as to what happens also think im going to remove the resonator for a blanking plate to eliminate that as well. |
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Posted 20th Aug 2010 at 03:56
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