MK5 Golf GTI

All Things Mk5 => How to Guides / Troubleshooting => Topic started by: Dan.b on June 02, 2012, 07:24:04 pm

Title: Power cut at 4000rpm
Post by: Dan.b on June 02, 2012, 07:24:04 pm

Hi all,

Just got my mk5 GTi and have a power issue.

If I floor it in 1st or 2nd it splutters at 4000rpm, the rev counter goes dead, EML and EPC light come on. If I then slow down and shift before 4000rpm it seems fine.

Scanned it for fault and found 1 pending fault p0321.

Would I be right in saying the engine speed sensor (G28) could be at fault?

Anyone experienced/ fixed this fault before?

Title: Re: Power cut at 4000rpm
Post by: edd666999 on June 02, 2012, 07:47:26 pm

Had your coil packs replaced under warranty?

Is your car modified?

Did the error come back after being cleared?

Title: Re: Power cut at 4000rpm
Post by: Dan.b on June 02, 2012, 08:11:45 pm

Mines a 2007 and according to VW they dont need doing?

Fault code hasn't come back yet but car still does it.

It runs fine aslong as I don't hold 1st and 2nd Upto 4k + revs

Title: Re: Power cut at 4000rpm
Post by: edd666999 on June 02, 2012, 09:21:25 pm

is the car standard?

Title: Re: Power cut at 4000rpm
Post by: E30Dom on June 02, 2012, 09:43:09 pm

Spark plugs?

Title: Re: Power cut at 4000rpm
Post by: Dan.b on June 02, 2012, 10:04:48 pm

Car is fully standard. 42k miles.

Full service inc plugs, cambelt and water pump at 38k.

Google is saying G28 sensor which is the  Engine speed/cam sensor.

Title: Re: Power cut at 4000rpm
Post by: Dan.b on June 02, 2012, 10:14:25 pm

http://www.mk5golfgti.co.uk/forum/index.php/topic,38163.0.html

Same faults as this guy!

Just wondered if that will cure it.

Title: Re: Power cut at 4000rpm
Post by: E30Dom on June 03, 2012, 08:53:56 am

Quote from: Dan.b on June 02, 2012, 10:04:48 pm

Car is fully standard. 42k miles.

Full service inc plugs, cambelt and water pump at 38k.

Google is saying G28 sensor which is the  Engine speed/cam sensor.

Did they actually change plugs though, Breeze VW were supposed to have changed mine, but a month later I was having a bad missfire as soon as it came on boost, and that was the plugs...

Need to scan it... though plugs won;t show as a fault...

Title: Re: Power cut at 4000rpm
Post by: Dan.b on June 03, 2012, 09:34:12 am

I don't think it's plugs. Its not really a misfire. More like a power cuts both mechanical and electrical lol.

I think il change the G28 if I can find out where it is!

Title: Re: Power cut at 4000rpm
Post by: Dan.b on June 03, 2012, 04:44:59 pm

Just been out in it again. The fault happens in any gear at exactly 4000 rpm.

It gets to 4000 rpm then the power cuts, rev counter drops so I shift up and the power is back until 4000 rpm again.

Atleast in saving petrol I suppose lol.

Title: Re: Power cut at 4000rpm
Post by: Dan.b on June 04, 2012, 04:49:50 pm

Just done a 40 mile trip and fault has gone!

Will have to keep my eye on it.

Title: Re: Power cut at 4000rpm
Post by: Dan.b on June 10, 2012, 09:22:59 pm

Fault is happening again intermittently so I will be plugging it in again tomorrow.

Kind of hoping it comes up with G28 sensor as it should be a simple fix!

Title: Re: Power cut at 4000rpm
Post by: Dan.b on June 16, 2012, 12:31:21 am

Problem solved with new crank sensor.