do e30s have a fuel reserve light?

[nando]

Do you really think that the particles on the bottom of the tank don't get stirred up when driving? Really? Have you see now nice BMW filters are compaired to others? Plus - I've pulled my sensors out - and the bottom was as clean as could be. I think you're basing that on an old wives' tale.

werd. I *always* drive to the light. My original pump still worked at ~230k. If it was such a bad idea, why would there even be a reserve capacity? I've ran it down to fumes a few times as well.

[Exodus_2pt0]

I would never know if my light works or not because I refill at 1/4 tank. I do not want the 21 years of nasties hanging out at the bottom of my tank getting pushed through the injectors in concentrated amounts.

That's what fuel filters are for.

[dnguyen1963]

I would never know if my light works or not because I refill at 1/4 tank. I do not want the 21 years of nasties hanging out at the bottom of my tank getting pushed through the injectors in concentrated amounts.

Do you know how fast the gas come out of the pump every time you fill her up? Any "nasties" down the bottom will be completely mixed and filtered before it gets to the pump. What do you think happen to the gas when you are driving around? I do not think that it will sit around nicely.

[dnguyen1963]

Nice! Thanks bro.

Another question. When replacing the bulb. Is the bulb in the back of the cluster or do I have to take out the fuel gauge to get to it?

Remove the cluster (after removing the steering wheel) and take out the bulb. You do not need to remove the fuel gauge. It is self explanatory when you look at the back of the cluster.

[Mr. Schwarz]

You know when you are really low when it sounds like it's running on 3 cylinders. You better have a gas station real close, and you don't want to run it like that weekly... Your motor will hate you and your pump will burn up.

[Robert Fisher]

When I changed my fuel pump the tank was a clean as could be.

Bob

[ak-]

The safe way to find out if the reserve light works is to pull the right side sender and allow all of the gas to drain out of the sender. The float will fall to the bottom of the sender and turn on the reserve light. If you do this with about a 1/4 tank of gas you can just lift the sender about half way out of the tank and you won't spill any fuel.

I want to make shirts with your name on it and shit.

"jlevie saved my e30."

[Mr.SWISS]

Which one is for the gauge and which is the light? Driver side 2 pin unit for gauge?

[nando]

they're both for the gauge. the passenger side also has a level switch that turns on the light.

[Mr.SWISS]

they're both for the gauge. the passenger side also has a level switch that turns on the light.

Ok I'm trying to figure out which one to replace since the gauge is dead on R and the light does come on at times. I replaced the 3 prong sender that goes with the fuel pump but I didn't realize there was the one on the pass side until I dropped the tank. My 87 eta only has the one sender on the fuel pump and it has a working gauge and light. Swapped cluster and same thing just light no gauge. The ETA that has one sender also lacks the OBC, so I was wondering if that had anything to do with it but it always says I have 30-47 miles of range.....

The car sat and had a rusty tank, I can only figure the floats on these are toasted. Just want to verify before I drop a Benjamin on a level sensor.

[nando]

you can't use a single-sender gauge with a two-sender gauge. they work on different resistance values.

the OBC range is also based on the switch. when it gets down to 3.5l, the switch turns on, and both the OBC and the cluster get the signal.

if you get no signal (gauge stuck at empty), first check both senders, and then check for the wiring. you need the power wire from the cluster (goes to the first sender), the signal wire from the 1st sender to the second one, and ground from the 2nd sender.

the other signal wire is only for the light, which you already know is working. that wire only goes to the 2nd sender on the passenger side.

[Mr.SWISS]

you can't use a single-sender gauge with a two-sender gauge. they work on different resistance values.

the OBC range is also based on the switch. when it gets down to 3.5l, the switch turns on, and both the OBC and the cluster get the signal.

if you get no signal (gauge stuck at empty), first check both senders, and then check for the wiring. you need the power wire from the cluster (goes to the first sender), the signal wire from the 1st sender to the second one, and ground from the 2nd sender.

the other signal wire is only for the light, which you already know is working. that wire only goes to the 2nd sender on the passenger side.

Which pins on the 3 pin connector do I cross to trip the gauge? One is brown other looks grn/red poss.