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jockmog
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Joined: 07 May 2018
Posts: 16



PostPosted: Sun Mar 03, 2019 5:50 pm    Post subject: Fuel Gauge problem Reply with quote

The fuel gauge on my '01, 3.4 Coupe has started to read full all of the time even after driving for more than 200 miles. Any suggestions as to why this might be?
I have just had the front to rear A/C pipe replaced at an OPC and wonder if something has been disturbed. On filling the tank today I noticed that there seemed to be an abnormal amount of vacuum when I undid the fuel cap.
All suggestions gratefully received, thanks.
 
  
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alex yates
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 15549
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sun Mar 03, 2019 6:20 pm    Post subject: Reply with quote

I'd sort it out quick or you'll end up with an imploding fuel tank. At bare minimum, release that vac after every drive to reduce any damage to the tank. It could be that the tank has already imploded and damaged the fuel sender unit.

Have a good read of this, it may help: http://911uk.com/viewtopic.php?t=129613
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infrasilver
Fast & Furious
Fast & Furious


Joined: 04 Oct 2010
Posts: 8143
Location: East Midlands

2001 Porsche 996 Targa

PostPosted: Tue Mar 05, 2019 1:41 am    Post subject: Re: Fuel Gauge problem Reply with quote

jockmog wrote:
The fuel gauge on my '01, 3.4 Coupe has started to read full all of the time even after driving for more than 200 miles. Any suggestions as to why this might be?
I have just had the front to rear A/C pipe replaced at an OPC and wonder if something has been disturbed. On filling the tank today I noticed that there seemed to be an abnormal amount of vacuum when I undid the fuel cap.
All suggestions gratefully received, thanks.


As Alex says have a read of my thread on the subject, I did some serious head scratching to get it sorted.

The A/C pipe runs up inside the offside wheel arch liner and there are a few pipes from the tank venting system that were probably removed to get the A/C pipes to route through. I'm guessing something didn't get put back or got damaged in the process?

Take it back to OPC and tell them of this problem, they will totally deny all responsibility so you would need to be there when they strip the wheel arch liner off to witness anything not as it should be.
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deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6169
Location: Brighton


PostPosted: Tue Mar 05, 2019 8:13 pm    Post subject: Reply with quote

They will be in the area of the carbon canister when doing this work .. do i actually think they have caused this .. no .. im afraid not .

Its either a stuck float on the fuel lvl sensor , it can catch on the pipes in there but normally after work done in the tank ... or the tank has partially collapsed .. this is normally a valve on the canister and nothing on the a/c pipe replacement would cause this .. IMHO .
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