Gas tank half full? But I just filled it...

Well... I have a 90 535i 5-speed... do the fuel level senders go nutty on these things? It was fine when I parked it about a month ago, but now it only shows the gas being half full and I just filled it, and empty when it still had about half a tank. Is this the fuel lvl sending unit or is there a fuse or relay I should also look at?

Thanks

Quote:

---

Originally Posted by uflnuceng

Well... I have a 90 535i 5-speed... do the fuel level senders go nutty on these things? It was fine when I parked it about a month ago, but now it only shows the gas being half full and I just filled it, and empty when it still had about half a tank. Is this the fuel lvl sending unit or is there a fuse or relay I should also look at?

Thanks

---

Mine is half full for a little while, then it realizes it's full :) At half full, the OBC also agrees it's half full (Test 07).

Oh wait... yours is a different story. What's the OBC telling you the 'actual' volume is?

its probably the level sender, they look like ass after 15 years...

Agree - it's the sender. Replaced mine last week. Pretty easy job if the tank is near empty. Be sure to get a new gasket and some small hose clamps.

Quote:

---

Originally Posted by mikell

Agree - it's the sender. Replaced mine last week. Pretty easy job if the tank is near empty. Be sure to get a new gasket and some small hose clamps.

---

Didn't check the OBC to see what it calculates for fuel level. I've done this sorta before on an e24 M6... thanks for the help guys.

Quote:

---

Originally Posted by mikell

Agree - it's the sender. Replaced mine last week. Pretty easy job if the tank is near empty. Be sure to get a new gasket and some small hose clamps.

---

What's the fuel level sending unit? Is it item 1?

Real OEM page

may just need to be cleaned