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 Posted: Sat May 12, 2012 3:14 pm |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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What engine is it Matty?
Weird things can happen but again, the ECU should easily pick up a faulty TPS if you have one and flag up a fault code. It would usually put the car in limp mode so it's still driveable rather than let the engine die on you
The engine dying after a minute of running is more like something getting hot and either going short or open circuit. The fact the ECU is not able to record a DTC at the fault condition is an important clue
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Posted: Sat May 12, 2012 3:35 pm |
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Joined: Feb 08, 2010
Posts: 3262
Trade Rating: +18
Location: Plymouth
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it's the 2ltr gti engine, the problem starts when i go to accelarate the car will feel jerky as the engine warning light comes on and i can see the rev needle going mental
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Posted: Sun May 13, 2012 1:15 am |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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Hi Matty
the problem starts when i go to accelerate the car will feel jerky as the engine warning light comes on and i can see the rev needle going mental
Well that's new information and although it's always difficult to diagnose from a distance that does sound more like an accelerator pedal position sensor (APPS ) or possibly throttle position sensor TPS.
What's the difference? APPS senses where you are putting the gas pedal and TPS senses where the throttle in the engine actually is.
Some engines have an APPS at the gas pedal and others have their APPS in the engine bay depending on whether you have throttle cable or not.
Sounds like your garage are homing in on the right place now (the ICV) but personally, I would have back probed the APPS if you have one and TPS and watch the output trace as the engine warms up then you can see the culprit
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Posted: Sun May 13, 2012 2:24 am |
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Joined: Feb 08, 2010
Posts: 7045
Trade Rating: +5
Location: In the garage
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If the idle control valve was at fault it would drive fine. It just wouldn't idle.
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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: Sun May 13, 2012 2:27 am |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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Hi Edward
By ICV we normally mean inlet control valve ie the engine throttle (or at least I do, ha!) as many cars do not have an idle stepper motor valve these days and idle is controlled directly by the throttle
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Posted: Sun May 13, 2012 3:43 am |
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Joined: Feb 08, 2010
Posts: 3262
Trade Rating: +18
Location: Plymouth
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| Edward wrote: |
| If the idle control valve was at fault it would drive fine. It just wouldn't idle. |
I don't think it's the idle control valve Paul, since I bought it from you
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Posted: Sun May 13, 2012 3:51 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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| Deckchair5 wrote: |
Hi Edward
By ICV we normally mean inlet control valve ie the engine throttle (or at least I do, ha!) as many cars do not have an idle stepper motor valve these days and idle is controlled directly by the throttle |
Everyone uses ICV = idle control valve around here.
Electric throttle-intake when the pane is controlled by a stepper etc.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Sun May 13, 2012 5:49 am |
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Joined: Aug 01, 2011
Posts: 390
Trade Rating: 0
Location: Bath UK
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Fair enough, there's lots of terms for the same thing and that's where confusions happen.
Throttle valve, butterfly valve, throttle body, inlet control valve are all the same thing. I've never heard it called an electric throttle intake for instance but that still makes sense to me
Fly by wire systems don't tend to have the separate idle control valve so much as it can all be done by the throttle valve so the inlet control valve also controls the idle
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Posted: Sun May 13, 2012 7:03 am |
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Joined: Feb 07, 2010
Posts: 2949
Trade Rating: +6
Location: Athens, Greece
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| Deckchair5 wrote: |
I've never heard it called an electric throttle intake for instance but that still makes sense to me.
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I meant to say body, not intake.
| Deckchair5 wrote: |
Fly by wire systems don't tend to have the separate idle control valve so much as it can all be done by the throttle valve so the inlet control valve also controls the idle |
Yep.
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| 1.4i, 2001, 3-door, China Blue
Repair safely - Drive safely | |
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Posted: Tue May 22, 2012 3:06 pm |
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Joined: Feb 08, 2010
Posts: 3262
Trade Rating: +18
Location: Plymouth
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Well small update on the problem, the garage finally fitted the throttle position sensor but the problem STILL hasn't been fixed, the garage said there is inconsistency with the engine stalling, they say the car idles fine when at normal running temp but then will stall, start it again and it will stall after 2 minutes but the next time it will run for much longer before stalling.
Garage are looking into it more but may be tempted to try peugeot to see if the fault registers there or rttam's garage which are quite local and i know the eml will flash en route
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Posted: Wed May 23, 2012 5:30 am |
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Joined: Aug 17, 2011
Posts: 908
Trade Rating: +18
Location: welshpool, mid wales
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I have just had a guy on the phone who is having a ecu, bsi and transponder off me. Sounds like he is having a similar problem and hes having to change the ecu. I have the ecu bsi and transponder and one fob if you want to try that. I sell them for £35 delivered.
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Posted: Wed May 23, 2012 9:00 am |
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Joined: Feb 08, 2010
Posts: 3262
Trade Rating: +18
Location: Plymouth
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phonecall from the garage, have replaced the icv for a new unit and although car started revving at 3000rpm the stalling when at normal running temp seems to have been cured but will have to wait til tomorrow once the auto electrician has been out to double check everything, so hopefully this wknd i will have the car back
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Posted: Wed May 23, 2012 9:44 am |
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Joined: Feb 08, 2010
Posts: 1548
Trade Rating: +3
Location: barnstaple
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have u tried the fuel pump as boos had same sort trouble with focus put new fuel pump in and was sorted
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Posted: Fri May 25, 2012 12:46 pm |
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Joined: Feb 08, 2010
Posts: 3262
Trade Rating: +18
Location: Plymouth
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Garage replaced the icv for a brand new unit which caused the revs to go up to 3000rpm on start up alone i believe from what they have said but when left running the engine will stall after a certain length of time , they don't think it's anything temperature related but still not sure why its cutting out, any ideas or people who have had the problem would be gratefully appreciated
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