ALL POMEN BRO,MY RIDE 320I 1984 AUTOMATIC,SINCE I BUY THIS UDM
MY TACH AND FUEL ECONOMY GAUGE DEAD,ANYBODY PLZZ GIVE SOME
ADVISE,THANKS

Your connection bro, Fuel and Tach works together. you have the same problem as our member Rompers. What you need to do is to clean the connection. this is from the thread Car Talks under Mileage problems

rompers wrote:

uhh huhu....my meter even worst...only the temp and speedo workz, the rest got angin wan, sumtimes work, sumtimes don't... Trip meter don't talk larr, 23 year old car went only 98K klicks

disamble your meter, and pasang balik.
A fungus or any substance might build up due to our humidity, therefore the connection between your ECU and your dash meter was not correctly. Sometimes when your car in HOT SUN, when you drive OK, then when hujan or aircond blast, the meter not working.

At the back of your meter, ada SCSI (connector macam computer). These port ada banyak jarum halus and each represent power supply and other data sent by the ECU there will be Male & Female (Female will be on your meter).

Kadang2 these jarum (Male) kotor, the best way to clean;

1. Spray a WD40, leave it dry.

2. After dry, kasi bengkok itu jarum sikit
(this will tighten the connector)

3. Spray WD40 again and straight plug in your meter.

4. On engine and give a test drive.

5. If okay then you start mounting the meter back in its place.

Thats It.

Mine not working either, somehow i did that, not working already, together with mileage.

Note:
Mileage meter will work together with speedometer.
Mileage jalan speedometer mesti jalan.
Spedometer jalan mileage tak jalan, plastic gear rosak.

WOKEY

thks bro,meter rosak boleh jadi ke?

maier wrote:

thks bro,meter rosak boleh jadi ke?

boleh jadi juga, but rather spent hundreds of money for 2nd hand meter, better do this service first. if cannot then you change arrrhh....