944 turbo fuel tank size

onehot951 · onehot951's Garage

i read somewhere the fuel tank size is around 20 gallons. does anyone know how much has is in the car when the fuel reserve light comes on? as in if i live 5 miles away from a gas station and the light just came on... can it.... "kinda make it...?"

thank you

soxnail · 04-13-2007, 08:52 PM

I get 21.4 gals in it. the reserve light comes on at about 2.1 gals and it gets me 55 or so miles..
SOx

nynor · 04-14-2007, 06:42 AM

i am pretty sure i have the 18 gallon tank. regardless, the car will go 5 miles after the light comes on.

AaronM · 04-14-2007, 11:00 AM

Quote:

Originally posted by nynor
i am pretty sure i have the 18 gallon tank. regardless, the car will go 5 miles after the light comes on.

Unless a previous owner had to replace the tank and used one from an early car, you have a 21 gallon tank.

If you only can get 5 miles after the light comes on, something's wrong with your sending unit or guage. This is quite common and usually not too bad of a fix.

nynor · 04-14-2007, 11:08 AM

good to know! i never let it get low enough for the light to come on, so the most fuel i've pumped into it is 17 gallons.

onehot951 · onehot951's Garage

ok that makes me feel better. now does the guage go down below the "R" on the fuel guage into the area that is glowing? or does it stop moving when it gets to the top of the glowing area.

soxnail · 04-14-2007, 06:50 PM

it goes below into the orange light area. and will get to half a needle blow the orange on my car..
Sox

onehot951 · onehot951's Garage

im not purposely trying to run it out of gas or anything. this month has been tight is all and i have this bigger problem with driving it all the time

thanks for the info

Bryans951 · 04-19-2007, 09:34 PM

I've been about 70 miles with the light on before runnig out. I would suggest stopping at about 60 miles. Walking to a gas station in the middle of winter is not fun.

Porsche-O-Phile · Porsche-O-Phile's Garage

Yea - IIRC there are two sizes of tanks. The larger ones are sought after by track guys.

AaronM · 04-23-2007, 08:21 PM

Quote:

Originally posted by Porsche-O-Phile
Yea - IIRC there are two sizes of tanks. The larger ones are sought after by track guys.

The manual for my '86 lists a single tank size. 21 gallon. The early cars are 18 gallon. Two sizes, but no option. The larger tank was not factory-available on the early cars, and the smaller tank was not factory-available on the later cars.

In either case, the light is supposed to come on with 2 gallons remaining, which in my normal driving should be at least 50 miles.