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Model specific boards => Golf mk5 => Topic started by: johnford60 on 29 June 2010, 17:57
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On way home tonight and when at full throttle with full boost all through the rev range i can feel a very slight hesitating, and once or twice i felt almost a very small misfire??
I thought i felt this the other day on motorway,
Any idea's of common problems? :undecided:
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Most likely is that you have a dodgy spark plug, failed that it could be a coil pack on the way out. I'm suffering the same very occassionally and after lots of research these are the most common causes. I'm taking it to my dealer thursday to see if it's recorded any faults. If it hasn't I'll try changing spark plugs and take it from there
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Im going to run diag on it tomorrow at work check for faults. Had new spark plugs 5,000 miles ago.
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No Fault codes!!
Driving home tonight was worse, it was holding back though the whole rev range!!!
PCV has been replaced under warranty, How about the DV?
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My understanding is that it will definately log a fault if it suffers boost loss from the DV. Spark plugs and coils often don't produce faults at the early stages. My money would be on the spark plugs. Were they oem you changed them for? quite a few people have changed them and then noticed hesitation a few months later and simply changing the plugs again has fixed it, it seems the tfsi is very sensitive with spark plugs
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Yea they where VW boxed ones, unless I have a faulty one I suppose.!! Might get them out tomorrow and have a loon at them!
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Let us know if you find a fix. Took mine in today, no fault codes and he set it idling with vag.com looking at the 4 cylinders and everything was perfect. Said could be early coil or spark plug failure but run it til it gets worse or I may be wasting money changing things with no fix. I'm starting to think mine is maybe dv failing. Feels like boost is slipping slightly? Thing is, sometimes it's perfect or could this just be that the dv sits properly and retains boost sometimes and fails other times?
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Ive still got no fault codes,
Ive had DV replaced under warranty cause I had no boost a while back, But I think im going to replace PCV valve today, its a bit lumpy on tick over.
The misfire problem, im sure is coil pack slowly breaking down.
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I'm having exactly the same issues. The slight misfire/hesitation I have been experiencing has been occurring above 4k when "pressing on". As a couple of you have seen no recorded faults I'll see if it gets any worse before dropping it into the garage for a diagnostic check, but to be on the safe side I'll keep a spare coil pack or two in the boot in case one suddenly goes.
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Well at least I'm not alone. Think I'm gonna get spark plugs changed and go from there. Fingers crossed
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Took for drive earlier.
Pulled out and when changing from 1st to 2nd gear it bogs down, almost like engine cuts. Wouldn't be anything wrong with the DSG box i hope!. When up and running its underpowered and hesitates more and more now.
It bogged down 3 times within 5 minutes, but only when pulling away from 1st to 2nd gear. it almost feels like traction control taking the power off at first but its not that.
When it get's warmer it doesn't seem to do that!
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Faults Found:
000564 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition)
P0234 - 001 - Upper Limit Exceeded
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 20
Mileage: 145435 km
Time Indication: 0
Date: 2000.00.00
Time: 18:49:20
Freeze Frame:
RPM: 6653 /min
Load: 81.5 %
Speed: 130.0 km/h
Temperature: 87.0°C
Temperature: 42.0°C
Absolute Pres.: 1020.0 mbar
Voltage: 13.970 V
012403 - Fuel Pump Circuit: Electrical Malfunction
P3073 - 004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 2
Mileage: 147682 km
Time Indication: 0
Date: 2000.00.00
Time: 17:09:09
Freeze Frame:
RPM: 903 /min
Load: 25.5 %
Speed: 6.0 km/h
Temperature: 47.0°C
Temperature: 37.0°C
Absolute Pres.: 1010.0 mbar
Voltage: 14.097 V
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Hope someone can help me out?
John
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As you had similar issues to me,
I have just replaced the 4 coil packs and fingers crossed the car is fixed. Just had a 15 minute drive and couldn't replicate any hesitancy at any point in the rev range and it now pulls much more freely to the red line. Also idles much more smoothly. The last time i took it out and gave it a thrash i was almost head butting the dash!
I'm very pleased and saved a nice amount by ordering from ECS Tuning (USA). Cost £77 for 4 delivered and took only 4 working days to arrive :cool: Cheapest price I could get from dealers was £33 x 4 = £132
Time to get back to enjoying the car :smiley:
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Just done live date log:
I got lots of Misfires on cylinder 2 :undecided:
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Intake Air Mass peaked at 179.14g/s at 5600 rpm !! ( I'm sure these needs to be at least 190g/s) It never went any high than than this, just up into the 170g/s.
I think i'll change MAF Sensor tomorrow and maybe 1x coil pack :rolleyes:
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Just done live date log:
I got lots of Misfires on cylinder 2 :undecided:
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Intake Air Mass peaked at 179.14g/s at 5600 rpm !! ( I'm sure these needs to be at least 190g/s) It never went any high than than this, just up into the 170g/s.
I think i'll change MAF Sensor tomorrow and maybe 1x coil pack :rolleyes:
Just picked mine up from the garage who advised that the misfire hadn’t created an error. I'm pretty sure they only ran the scan when the car was stationary, so can you advise how a live scan is carried out?
I also had a rev D DV fitted at the same time which has improved responsiveness but not made any change to the misfire problem.
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Hi,
Have you got Vag Com?
John
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I havent but the print out provided by the garage only lists faults with my RCD 510 DAB (which I retro fitted) and nothing else.
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Mine's got no faults on missifre, but when i look at the live data of engine running ,block 14/15 then it missifre's quire a bit on different cylinders!
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Just got my car back after getting 4 new coil packs + plugs and fitted its totally transformed the car. The hesitation when under 3/4 to full throttle has completely gone + it idles and starts better. The engine feels much more responsive and pulls harder although the previous week I had the latest revision DV value so I think it could be a combination of the two.
As I have only had it back a day I won’t give it a full clean bill of health yet, but it sure feels that way
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I've fitted a new fuel pump to mine and it's sorted. See my other post on here.
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Hope the lights arrived ok :smiley:
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Hope the lights arrived ok :smiley:
Sorry, Yes they did thanks. I'll send you a MMS with them on, and cleaned up :rolleyes:
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Hope the lights arrived ok :smiley:
Sorry, Yes they did thanks. I'll send you a MMS with them on, and cleaned up :rolleyes:
They look good. Superglue was a terrible idea.
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Hiya John.
when you were driving your car when you had the problem was it happening at mid range and it was happening intermittently? for example...
foot down, rev's climbing (4k-4.5k....cut...4.7k cut...5k etc etc) was it like that? Also I am getting misfiring reading from cylinder 2 and 3 mostly on 2 but its very intermittent, it doesn't happen all the time :s if it does it will pick up the misfire and reset itself again.
anything like you experienced before?
Cheers.
I drive a seat leon FR tfsi ko3 bwa engine / stage2+ revo setup its on stock at the moment but once its on performance settings then my car hesitates at mid-range 9alot of cuts but still continues to climb.
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Hiya John.
when you were driving your car when you had the problem was it happening at mid range and it was happening intermittently? for example...
foot down, rev's climbing (4k-4.5k....cut...4.7k cut...5k etc etc) was it like that? Also I am getting misfiring reading from cylinder 2 and 3 mostly on 2 but its very intermittent, it doesn't happen all the time :s if it does it will pick up the misfire and reset itself again.
anything like you experienced before?
Cheers.
I drive a seat leon FR tfsi ko3 bwa engine / stage2+ revo setup its on stock at the moment but once its on performance settings then my car hesitates at mid-range 9alot of cuts but still continues to climb.
Exact same fault mate!!!...
Changed fuel pump in tank, and then put then put my map back on and it's been fine since. Im still road testing to make the fault does not re-occur.
When the vehcile is mapped the ecu will request more fuel, so on a standard map, you might not get the fault.!
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Hi John
mind i ask how much it cost for the new fuel pump installed in the tank or does the whole unit needs to be replaced? i readded my induction kit back on to the car and retuned my car with higher settings with a revo switch and it seems to be alright well not perfect it does still spike but not as constant as before so im guessing thats something relating to plugs/coil packs/ and like you possible pump and my car has a odd problem with it running lean.
-1.7 % Lambda (Idle) Self-Adaptation
14.1 % Lambda (Partial) Self-Adaptation
cheers