A ton of fun problems on my '90 735i.

[PaInBeLoW]

I have owned my '90 735i now for two weeks and love it. The a/c needs a charge but no worries right now in TX this time of year anyway. What an awesome car. But Im starting now to track down the issues that plague the car and am looking for some help. I have a light that kicks on for brake linings, can anybody clue me in on where to start to fix that? and then I have an issue with the gas gauge. It's completely useless. It never moves at all whether Im on an empty tank or full tank. Where should I start on that perhaps? I'll just start with those two probs. first!!!

[nukeduster]

if brake lining intermittantly flashes its almost time for new brake pads. the sensor is starting to trip/drag on the rotor

[PaInBeLoW]

Yep! That's exactly the issue I am having with the light. It is intermittently on and off. The brakes on the car feel fine, but if a brake job is what it takes..... Now for the gas tank issue!

[kenjh]

try putting a ground lead from the fuel tank to a good ground point if the gauge moves at all it is just a poor ground problem ,i have fixed several gremlins this way..and fuses.I don't know if any other gauges are effected ,are they?

[PaInBeLoW]

Thanks for the response. What's a lead exactly? Pardon my ignorance, when it comes to electrical stuff I'm totally not in the know. But it is only the gas gauge though that isnt working.

[kenjh]

it's a jumper lead ,a wire with clips at each end to make a temperary connection,you can get them at electronic shops (radio shack)it makes it simple to bypass a swich or connector to check poor grounds or broken wireing that doesn't show up at first glanceif you can reach the fuel sender on the tank and disconect it from the tank connect it to ground with the jumper if the gauge hits full then your sender is at fault the blue/red/ yellow wire should be the gauge senser.

[marti5]

I would say its you sender in the tank, might just need the contacts cleaning.

[coolfrod]

hi i am a noob also. I have a 735i and i whould like to replace the heater core, but don't know how to start to remove the dash board. Can anyone help?

[PaInBeLoW]

I know this has just been a loooong drawn out process but I finally got the car up on stands yesterday to see where some of my issues were coming from because it looked like my car was leaking gas from somewhere too. I found that the top hose with the slight nudge had a tiny pinhole in it that was pushing out gasoline pretty fast when the car was running!!! So Im hoping that by replacing that hose it will take car of some of the gasoline stink I always smell on the car. Couldnt find any other leakage. BUT how do I get thise connector off exactly? I havent seen anything like it and I really dont want to break it but can anybody tell me?

[marti5]

Picture not to sharp, are you talking about the connector on the rubber pipe if so you cut them off with a pair of side cutters or snips and replace with a normal jubilee clip, they are standard BMW hose clips.

[PaInBeLoW]

No I was able to get both off and replace those easy I mean the one on the left, how do i approach that with breaking stuff? I cant quite figure it out, and I know that's retarded but...

[marti5]

Oh, the electrical connector, it should be like all BM connectors of that shape, does it not just ride up and off at one side ? you do have to give it a slight tug.

[PaInBeLoW]

Gonna try that. Do I need to disconnect it even to pull the pump up out of the tank? Which part of the assembly do i need to focuson inspecting/fixing/replacing since my fuel gauge is not working?

[marti5]

Right here ya go then.....:

BMW E32 - Fuel Sender

[PaInBeLoW]

very nice. I'll report back if everything comes together nicely!!