Bleedin Petrol Gauge
Bleedin Petrol Gauge
Author
Discussion

Denis O

Original Poster:

2,141 posts

272 months

Sunday 28th May 2006
quotequote all
Just had the embarrasing situation of running out of gas although in my defence the gauge was reading just over a 1/4 full. The car started spitting and spluttering and wouldn't accelerate until it finally stopped and conked out and wouldn't start again. I thought I was into a big bill but then the guy who's house we broke down outside of came out and put some gas in for me. Fired up straight away and went to the garage to fill up. Took 65 litres and when I turned the ignition on the gauge showed full

So it would appear the gauge is working although not below 1/4 tank. Is this a common fault and what would the fix be?

rich 36

13,739 posts

295 months

Sunday 28th May 2006
quotequote all
Not sure on newer models,

on my 82 the sender unit on top of tank, contains float and all that within a qauze sleeve, which prevent it moving up and down to rapidly as the car moves about,
so the gauge stays more o less stable, as it goes down.

if the float on the end of wire had gotten bent, this would affect the reading

I would fill it up each time, or at least top it up each week, and countdown the miles on a scrap of paper to prevent P-car inertia

rich 36

13,739 posts

295 months

Sunday 28th May 2006
quotequote all
B4 gettin it fixed obviously

sportsandclassic

3,774 posts

247 months

Tuesday 30th May 2006
quotequote all
what car is it ?
if its a 996 it may need recalibrating with the porsche tester...

Denis O

Original Poster:

2,141 posts

272 months

Wednesday 31st May 2006
quotequote all
It's a 1999 996 Cab Tip. Can this only be reset by Porsche or anyone with the correct computer equipment?

supersport

4,631 posts

256 months

Wednesday 31st May 2006
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Remember an article in 911&PW where either Peter Morgan or John Tippler had a similar problem and ran out on the motorway. Turned out that the gauge doesn't reconise that you only put £10 in and is complete crap below a quarter!

sportsandclassic

3,774 posts

247 months

Wednesday 31st May 2006
quotequote all
Hi there

you can calibrate it with the porsche system tester 2 which i have as many independants do..

its a pain to do as all fuel has to be drained and then so many litres added and then it calibrates it self.

if its a 4 wheel drive it will only register a change in fuel level when you add 25 litres or more when the light has come on...if you have had the batterey off then it will just drop the gauge to zero and put the light on.

Denis O

Original Poster:

2,141 posts

272 months

Wednesday 31st May 2006
quotequote all
It's a C2 and I'd filled up in France on my way back from my Euro trip. I'd not noticed any problem with the gauge prior to that fill up. When I got back to the UK it was on just over 1/2 tank and then proceeded down with mileage until it ran out albeit showing just over 1/4 tank.

I think in future I'll just fill it up every time it gets to 1/4 tank and all will be well.......fingers crossed.