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AK996
Newbie


Joined: 15 Oct 2019
Posts: 9



PostPosted: Wed Oct 16, 2019 6:59 am    Post subject: 996 c4s fuel tank capacity? Reply with quote

Hi

After many years I finally bought a Porsche 911 (996 c4s)

The low fuel message appeared saying I had 34 miles left to empty tank so I filled up to the brim. It took just 29 litres and the tank was full? The fuel gauge shows full and the trip shows 204 miles range.Have driven apprx 40 miles and the gauge shows 3/4 so seems to be working.

Is this normal or is something wrong?

Any help would be appreciated
 
  
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Billy Bumpsteer
Silverstone


Joined: 12 Aug 2019
Posts: 136



PostPosted: Wed Oct 16, 2019 7:22 am    Post subject: Reply with quote

Normal, C4 tanks only gauge the first half or so of the tank, do a search, it comes up alot!
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17064
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Wed Oct 16, 2019 7:23 am    Post subject: Reply with quote

As above. the gauge only measures the top 2/3rds then its guess work off the ECU.

Tank holds around 62 litres.
_________________
2000 Manual 996 C4 Arctic Silver Convertible


 
  
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AK996
Newbie


Joined: 15 Oct 2019
Posts: 9



PostPosted: Wed Oct 16, 2019 7:55 am    Post subject: Reply with quote

Thanks for the quick replies.
I searched the posts where the fuel gauge did not register a small top up, did not realise the same issue would be there when the fuel gauge shows full.

So will not really know the true range will be.

Will get some getting used to.

Thanks
 
  
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pzero
General
General


Joined: 18 Jul 2010
Posts: 5512
Location: London


PostPosted: Wed Oct 16, 2019 7:57 am    Post subject: Reply with quote

As the posts above have already said, nothing to worry about.
OP, Billy Bumpsteer is quite correct in saying that a quick search of the forum would throw up the reassurance you were seeking.

Here's one previous thread, other threads are available;

http://www.911uk.com/viewtopic.php?t=89198&postdays=0&postorder=asc&start=0&sid=3282765d62063adf69b4aad7b45d0bdf

Oh, and Welcome to 911uk. A pic or two of your C4S would be good. Thumb
_________________
991.1 Carrera GTS
 
  
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Robertb
Dijon


Joined: 01 Sep 2003
Posts: 7253
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Wed Oct 16, 2019 8:36 am    Post subject: Reply with quote

Its possible the previous owner/dealer put a bit of fuel in as the range had gotten low, but for the reasons pointed out above the car did not register it. Once you filled it up then it correctly registered.

Enjoy your new car!
_________________
"911- the guilt-free supercar"

Current: 2003 C4S Coupe, seal/black

Ex: '02 C4S Coupe, '96 993 Targa, '88 Carrera Sport Coupe
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7497
Location: Brighton


PostPosted: Wed Oct 16, 2019 6:55 pm    Post subject: Reply with quote

The fuel tank holds 63 litres so a refill that took only 29 ltrs is approx 50 % of the tanks capacity .

It wasn't totally empty but had approx 9 ltrs left in it till empty.

38 ltrs measured so we are missing 25 ltrs ??

The calculated value IMHO is roughly bottom third so approx 20 ltrs .

I would run it again until it says empty then see how much fuel you put into the car .. if still 30 ish liters then it's not right .

My suspicion is you need a fuel sender calibration doing as the calculated amount seems to be missing .

From memory and i thought that a full tank gave a range of approx 285 miles .




Quote from another post ...


it is 64 litres. But I've crammed 67l in with 10m still showing on range, but that's including the spout.
Not sure why it's important though. Just fill up when the remaining range gets below your comfort level.
You should get a range of 250-270m if you're urban, or thrashing it, and up to high 400's on a long run at motorway speeds.
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My Daughter's Crowdfunding has hit the target .

Thank you all so Very much .

She's not going until july 2020 though .



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AK996
Newbie


Joined: 15 Oct 2019
Posts: 9



PostPosted: Wed Oct 16, 2019 8:27 pm    Post subject: Reply with quote

Thank you for all the replies and the link.

Although i have the car the dealer will be checking it over and servicing it next week and handing it over to me officially. I will let him know that it needs a fuel sender calibration so that really has helped thank you.
I will of course take your advice and run it low and refuel to full.

I have now driven in town for 50 miles, the range has dropped from 204 at full tank down to 75 miles, trip showing 14.8 mpg So as it stands I will be getting 125 miles to a full tank.


Nice to know theres help out there.
 
  
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paulstevens64
Trainee


Joined: 18 Sep 2015
Posts: 71



PostPosted: Thu Oct 17, 2019 2:17 pm    Post subject: Reply with quote

The other alternative is that the tank has partially collapsed.

If the pressure release valve does not work, then the tank can implode and buckle.

As a result the capacity of the tank would be reduced. If the bottom half is ok but the top half is collapsed, then you would get your fuel warning (based on guess work by the ecu but approx. 10 litres left) but would not be able to put in 55 odd litres.

I hope this makes sense.

Paul
 
  
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AK996
Newbie


Joined: 15 Oct 2019
Posts: 9



PostPosted: Fri Oct 18, 2019 9:09 am    Post subject: Reply with quote

Unfortunately that does make sense.
Hope its not that, sounds like a big job.
I am dropping it back to the dealer next week so will definitely let him know.
There are a few other things he should be sorting out so hope he will do it properly before the car is officially handed over to me.
I will post some pics later.

Thank you
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7497
Location: Brighton


PostPosted: Fri Oct 18, 2019 7:01 pm    Post subject: Reply with quote

If you have any other issues no matter how small then please post .. this forum has a vast amount of owner experience and people here are always willing to help out .
_________________
.

My Daughter's Crowdfunding has hit the target .

Thank you all so Very much .

She's not going until july 2020 though .



Mechanic

7pm - 9pm

Now At An Indy.
 
  
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AK996
Newbie


Joined: 15 Oct 2019
Posts: 9



PostPosted: Fri Oct 18, 2019 7:52 pm    Post subject: Reply with quote

The other things:

Air con not working, makes a noise and blows more but not cold.
Electric Passenger seat one function up/down not working, just makes clicking noise.
No CD for SAt Nav- so I do not know if it works.
Rear parking sensor works sometimes but mostly just beeps continuously.
Cracked Driver Side indicator lense.
Bonnet does not stay up after a drive, seems to stay up when cold.
Fuel gauge as mentioned.
Creaky dashboard.

I still have a week to discover more, anything I should look out for or check?
 
  
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AK996
Newbie


Joined: 15 Oct 2019
Posts: 9



PostPosted: Fri Oct 18, 2019 7:55 pm    Post subject: Reply with quote

The other things:

Air con not working, makes a noise and blows more but not cold.
Electric Passenger seat one function up/down not working, just makes clicking noise.
No CD for SAt Nav- so I do not know if it works.
Rear parking sensor works sometimes but mostly just beeps continuously.
Cracked Driver Side indicator lense.
Bonnet does not stay up after a drive, seems to stay up when cold.
Fuel gauge as mentioned.
Creaky dashboard.

I still have a week to discover more, anything I should look out for or check?
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7497
Location: Brighton


PostPosted: Sat Oct 19, 2019 4:00 pm    Post subject: Reply with quote

A/C will make a noise when its low on gas , turn off the a/c and the noise should go. usual fault is a small leak in either the condensers or the a/c pipe connection by the o/s/r wheel .

Seat fault .. motor or cable from that motor is jammed .

Nav might not be fitted , what pcm unit do you have and what message comes up when you press the nav button ?

lens .. new one req.

Bonnet .. bonnet stays / shocks required .

Creaky dashboard .. hell a lot of different things that can be .. sound clip / video is needed to start the ball rolling there .
_________________
.

My Daughter's Crowdfunding has hit the target .

Thank you all so Very much .

She's not going until july 2020 though .



Mechanic

7pm - 9pm

Now At An Indy.
 
  
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AK996
Newbie


Joined: 15 Oct 2019
Posts: 9



PostPosted: Mon Oct 21, 2019 8:54 am    Post subject: Reply with quote

Hi

I do not the which pcm it is but when I press the navigation button it asks to insert the CD, which the dealer says he will have ready for me.

I put the car on a friends ramp and he discovered:

Front near side
Perished bump stop
excessive play on lower ball joint
stabiliser link excessive play

Offside
excessive play on ball joint
excessive play stabiliser link

Both rear stabiliser excessive play
Break fluid had water content
Air con rads look oily?

Now I know why the car seems to jerk/slide just a bit now and then, I thought it was the hard suspension which i am not used to.
I will email the dealer to let him know but am wondering if they will actually take care of everything or let some things go and give me a new MOT.

Is it unreasonable for me to expect the dealer to rectify all this as the car is quite old?
 
  
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Robertb
Dijon


Joined: 01 Sep 2003
Posts: 7253
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Mon Oct 21, 2019 12:05 pm    Post subject: Reply with quote

Sounds like it may need new front coffin arms (common problem), drop links (easy job) and a brake fluid change.

Personally, I'd get the car MOT'd by your usual guy. It may well fail on some of the points you've noted (excessive play on ball joints/stabilisers/droplinks) and I think you should expect to buy a car from a dealer that is roadworthy (i.e would pass an MOT at the point of sale).

I'd not worry about the perished bump stop. Some of the rubber suspension components can look a bit tatty/perished but sill work fine.

The aircon fluid may be leaking out of the condensers, hence the noise & oily residue. This means new condensers, which will be a few hundred £ at least so I'd want that sorted by the dealer if at all possible.

Get some mesh grilles fitted when the front bumper is off to protect the rads and condensers in future.
_________________
"911- the guilt-free supercar"

Current: 2003 C4S Coupe, seal/black

Ex: '02 C4S Coupe, '96 993 Targa, '88 Carrera Sport Coupe
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7497
Location: Brighton


PostPosted: Mon Oct 21, 2019 7:09 pm    Post subject: Reply with quote

If it says insert cd then nav is fitted and a cd is needed to load the software ... nav disc will sort that problem.

Bump stop .. normal these days and not worth doing unless with other shock work .. garage will not fix .

Link rods and ball joint play .. that's not so good .. garage will probably dispute this .. it needs to be done if keeping the car though.

Brake fluid .. it should be done every 2 years .. i suspect that a measurement of water over the limit and its not been done in many a year .. poor maintenance i feel .

There does seem to be many problems on this car so far which is a shame .
_________________
.

My Daughter's Crowdfunding has hit the target .

Thank you all so Very much .

She's not going until july 2020 though .



Mechanic

7pm - 9pm

Now At An Indy.
 
  
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AK996
Newbie


Joined: 15 Oct 2019
Posts: 9



PostPosted: Wed Oct 30, 2019 4:45 pm    Post subject: Reply with quote

Just an update thought it may be of interest.

Got the car back after the dealer serviced it to officially hand it over.
They did the following:

Replaced two front tyres with new continentals
New front brake pads
Two new AC radiators, blowing proper cold now
Fixed passenger electric seat issue
New strut/damper for front boot
New coffin arm driver side- driving much better.
Fixed reverse parking issue
replaced indicator lens
Gave a sat nav cd so it works now

So I am quite impressed with them.
Told me to keep an eye on the fuel tank capacity and if it did not improve then they would take it in again.
I did some research and tried the following:
Filled up to the brim(range now 230 miles gauge showing full), drove straight home and disconnected the battery for 1.5 hours. Reconnected the battery and turned on ignition for 5 minutes not the engine.
Range now 325 miles .I think the fuel sensor and fuel gauge now reading from the same book.
thumbsup
Dealer is Portiacraft.

I bought from them because they are local now I am so glad I did.

Thank you for all the replies.
 
  
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Griffter
Spa-Francorchamps


Joined: 22 May 2016
Posts: 362



PostPosted: Thu Oct 31, 2019 10:09 am    Post subject: Reply with quote

I’m impressed by the fact that they let you take the car, compile a list of things to fix and take it back for them to be addressed before “handover”. That really is stand out service!

On a separate note, whatever happened to that guy buying a car from Glasgow which had a long list of things to be done, an even longer list of excuses and an even longer still “delivery” time?
 
  
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bakerboy4s
Spa-Francorchamps


Joined: 06 Jun 2015
Posts: 266
Location: Staffordshire


PostPosted: Thu Oct 31, 2019 4:17 pm    Post subject: Reply with quote

I think that is a result, and well done to Portiacraft!
 
  
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