Fuel Gauge - BMW Forum

rakeshp · 06-06-2005, 04:33 PM

Ok...i tried posting this once already but i dont know what happned to the topic so im doing it again. For some reason lately...my 1998 528i has a problem with the fueling system or something. Everytime it gets to about half way between empty and the quarter tank mark it starts to shake and just completely stops. My check engine light comes on and i cant really do anything. If i hit the gas, knowing there is gas in there, the RPM raises really high but the speedometer shows no change except struggling. I don tknow why this happens but if anyone has an idea please let me know!

Also, if i add more gas into the car then it begins to run fine again it just cant get close to that mark otherwise it goes all crazy on me. PLEASE HELP!

rakeshp · 06-10-2005, 09:04 AM

does no one know anything???

Man this sucks..i guess i just have to keep the gas in the tank at a max at all times...

ghead

Bear · 06-10-2005, 09:58 AM

You may have water (condensation in the fuel). Buy a couple of bottles of water out, dry gas, heet , gas line anti-freeze,etc and dump them in the tank and see what happens.

LOS · 06-10-2005, 10:18 AM

RAKESHP,

Is it possible your gauge is giving you an incorrect reading and in fact is running on empty?

I used to have a car that the gauge would show a 1/4 tank but in reality it was EMPTY!!
The way I found out was simple. I filled up, found out how many gallons the tank would hold and multiply by MPG (miles per gallon) for my car.

15 gallons x 16 miles per gallon= 240 miles per full tank... There was no way I was going to get an additional 60+ miles when the gauge showed 1/4 tank left and 240miles on the trip meter! Get it?

Try doing this next time. Hope this helps

LOS

superdeadman · 06-10-2005, 10:49 AM

maybe something is wrong with the fuel line itself. I'm not sure how this thing works, but i think it's possible that because you don't have much fuel left, there is not much pressure that it creates and fuel stops flowing to your engine (or vacume isn't strong enough). But those are just theories of a man who doesn't know crap about cars, i'd check the incorrect data reading first.