MK5 Golf GTI

All Things Mk5 => Modifications & Technical Area => Technical Workshop => Topic started by: so1o on April 23, 2015, 08:18:00 am

Title: Mpg issue after pcv and dv change
Post by: so1o on April 23, 2015, 08:18:00 am

Hi people

I changed my dv and pcv yesterday. Scanned it with vagcom and all good. No faults errors Etc

Car drives fine and is better then before as old dv was split.

The problem I have now is I can actually see the mpg drop sitting in traffic. 1 mpg every 20-30 seconds. I'm certain this wasn't happening before.

What could it possibly be?  Have I left something unplugged?

Any test I can do using vagcom?

Appreciate any help.

Title: Re: Mpg issue after pcv and dv change
Post by: Dan_FR on April 23, 2015, 08:23:04 am

Perhaps you hit the button on the stalk and are looking at Trip 1 instead of Trip 2 (current trip instead of the longterm)

Title: Re: Mpg issue after pcv and dv change
Post by: so1o on April 23, 2015, 08:48:12 am

I did wonder that but definitely on the same trip that I always have it on.

Title: Re: Mpg issue after pcv and dv change
Post by: so1o on April 25, 2015, 07:47:31 am

Can someone please do me a favour. Next time your in your car and the car is up to temperature. Put the display on trip one and let me know if the mpg is coming down whilst idling.

Title: Re: Mpg issue after pcv and dv change
Post by: Wash on April 25, 2015, 12:21:03 pm

My MPG always goes down when idling, quite a lot too...

Title: Re: Mpg issue after pcv and dv change
Post by: USBulldog on April 25, 2015, 12:50:01 pm

Every car i've had does that it's just some are faster to react then others. Perfectly normal as sitting stationary you are doing the big fat 0 miles to the gallon.

Title: Re: Mpg issue after pcv and dv change
Post by: so1o on April 25, 2015, 03:13:29 pm

Thanks guys. I just never noticed it before. All is normal.