E36 Tacho and fogs problem

[kdevitt]

Hoping someone will have an idea of the best place to start looking for a fix for this -

Fuel light is constantly on, even with fuel in the car. Speedo isn't working, but rev counter is. Econometer isn't working either.The fogs won't work, and the dash light to show they're turned on isn't coming on.

Can't say when this began - had only been moving the car around a bit so never paid attention to the speedo or tried to stick the fogs on.

Have run the instrument cluster test and they're all working as they should. All fuses are fine.

Any ideas?

[RossYB]

For the fuel gauge problem, It might be a wire lose on the fuel pump under the back seat.

Happened mine, Only takes a few mins to check.

[kdevitt]

For the fuel gauge problem, It might be a wire lose on the fuel pump under the back seat.

Happened mine, Only takes a few mins to check.

Will give it a look - am figuring on everthing being related though.

[DaveG]

Try the plugs in the back of the clocks, plugging them out and in again solves some problems, you can have a loan of a set of clocks from me to try if you like, rule out another thing

[claude]

I'm wondering if the speed sensor on the diff is related to the speedo part of it because my acted up and started jumping randomly but a new diff sensor cured it, they are cheap enough to replace

[kdevitt]

Try the plugs in the back of the clocks, plugging them out and in again solves some problems, you can have a loan of a set of clocks from me to try if you like, rule out another thing

Thanks Dave - will take you up on that offer. Tried unplugging the connections and putting them back but no joy.

It is potentially several different problems - had the same on the E30 when I got it back and thought a load of different issues were all connected when they weren't.

[kdevitt]

I'm wondering if the speed sensor on the diff is related to the speedo part of it because my acted up and started jumping randomly but a new diff sensor cured it, they are cheap enough to replace

Will see if I can get one of the issues fixed on its own first. Have a new diff to go on it along with some other work anyway - think there might be a spare sensor sitting there I can use.

[318 iS Cosmos]

Ken, just following your build thread and noticed you replaced the bootlid..i wonder did any of the wires get damaged? That loom can cause a no. of electrical issues..

[kdevitt]

Shouldn't have - but its a possibility. Fuel light was on before the lid was replaced though.

[kdevitt]

Bit of a bump as this is well and truly wrecking my head. Have replaced the fog light relay, every single fuse, and tried a new set of clocks. Also stripped down the rear bootlid to check for dodgy wiring, and nothing.

Anyone else have any suggestion?