BMW 2002 Temperature and Fuel Gauge Repair

When I discovered my 1970 BMW 2002’s temperature gauge pegged in the red with no real sign that the engine actually was that hot, it turned out to be an electrical malfunction. The article by Louis D’Amario on page 12 of the February 1977 Roundel paid for most of my first Year’s membership in the BMWCCA.

Lately, however, both the temperature gauge and the fuel gauge-started jumping and pegging in harmony. They could be fixed temporarily by blowing the horn, flashing the lights, or running the wipers, but people were starting to stare, so. The final fix is something that should be done on your car even if you don’t have any such electrical problems, just to forestall them.

First, check to see that the ground strap from the battery to the chassis is secure and that the ledge on which the battery rests is securely mounted to the car. Remove the instrument cluster by first unscrewing the knurled nuts in the back and disconnecting the speedometer cable. Unplug the tach wire. Unplug the large white multi-connector plug, and then remove the instrument cluster.

Check the ground wire from the white plug to the chassis. On the back of the heat/gas/idiot light assembly there are two slotted nuts that screw onto studs from the gauges. Underneath each is a brass rivet through the panel which is the gauge’s ground connection. One or both of these rivets will have come unsoldered. When this ground connection is broken, the only current return for the gauge is through its sensor, and this disproportionate flow pegs the needle. Solder the rivet where it has broken free. Use a small (25-40 watt) soldering iron on this circuit board and electrical solder and don’t cook it. Mr. D’Amario’s fix, connecting these terminals together, worked because one of his grounds was still good. In my case, neither was.

Assuming that if it broke once, it will break again, you may want to also perform the following step. Locate a black rubber block impaled on three pins sticking out of the panel and remove it. These pins are the connections for a clock if you have a tach, and vice versa. The center pin is a ground. Solder a wire to the base of it, connecting the other end of this wire to both gauge studs, or put solder lugs on the studs and solder to them. This will provide a redundant ground. Put the rubber plug back on. BMW 2002 Tii owners will have to sneak the wire under one plug or another, as they have both tach and clock. Take this chance to replace any burned-out bulbs in the panel and to clean the face of the panel.

Recheck everything, making sure there are no shorts in your wiring, and put it all back together again.

I was pleasantly surprised to discover how much thicker the latest Roundel is compared to the February 1977 issue. It seems that there are a lot of members who are writing in now who did not before. Guess I’m one of them.

Author: Gary Koerzendorfer

BMW temperature Gauges available on eBay

Listings from eBay

BMW E30 - 52mm Boost Gauge Pod - Replace Vent for 1982 - 1992 BMW e30

$35.00
End Date: Sunday Apr-19-2020 19:38:39 PDT
Buy It Now for only: $35.00
Buy It Now | Add to watch list

Universal Radiator Pressure Tester Cooling System Head Gasket Leak Detector

$55.95
End Date: Tuesday Apr-14-2020 8:58:26 PDT
Buy It Now for only: $55.95
Buy It Now | Add to watch list

BMW °13886269° Temperature Gauge {{{AS IS}}}

$30.00
End Date: Saturday May-2-2020 23:10:02 PDT
Buy It Now for only: $30.00
Buy It Now | Add to watch list

BMW R Nine t R9T Oil Temperature Gauge Fahrenheit - Black 2014+ R NineT

$69.99
End Date: Saturday Apr-25-2020 7:21:00 PDT
Buy It Now for only: $69.99
Buy It Now | Add to watch list

Car Motor HOTSYSTEM Black 2" 52mm Blue Digital LED Fahrenheit Water Temp Gauge

$14.55
End Date: Friday Apr-17-2020 19:16:21 PDT
Buy It Now for only: $14.55
Buy It Now | Add to watch list

BMW °1378565° Temperature Gauge {{{AS IS}}}

$24.00
End Date: Wednesday May-6-2020 1:37:55 PDT
Buy It Now for only: $24.00
Buy It Now | Add to watch list

BMW E30 - 52mm Boost Gauge Pod - Replace Clock for 1982 - 1992 BMW e30

$26.00
End Date: Tuesday Apr-14-2020 8:52:38 PDT
Buy It Now for only: $26.00
Buy It Now | Add to watch list

30MM Silver Water Temp Joint Pipe Radiator Hose Temperature Gauge Sensor Adapter

$7.62
End Date: Wednesday May-6-2020 10:14:41 PDT
Buy It Now for only: $7.62
Buy It Now | Add to watch list

BMW E21 320i 320iS Temperature Gauge

$39.99
End Date: Thursday Apr-30-2020 14:43:56 PDT
Buy It Now for only: $39.99
Buy It Now | Add to watch list

OE BMW E30 VDO Coolant Temp Temperature Gauge 1374816

$49.99
End Date: Wednesday Apr-22-2020 14:09:00 PDT
Buy It Now for only: $49.99
Buy It Now | Add to watch list

HOTSYSTEM UNIVERSAL BLACK 2" 52MM DIGITAL LED OIL TEMP TEMPERATURE GAUGE METER

$13.99
End Date: Friday May-1-2020 1:11:35 PDT
Buy It Now for only: $13.99
Buy It Now | Add to watch list

BMW E30 - 52mm Boost Gauge Pod - Replace Clock for 1982-1992 BMW E30

$15.00
End Date: Wednesday Apr-22-2020 18:44:23 PDT
Buy It Now for only: $15.00
Buy It Now | Add to watch list

AutoMeter 2432 Traditional Chrome Mechanical Water Temperature Gauge

$120.26
End Date: Monday May-4-2020 18:08:04 PDT
Buy It Now for only: $120.26
Buy It Now | Add to watch list

28 PCS Radiator Pressure Tester Kit Coolant Vacuum Type Cooling System Adapters

$82.66
End Date: Saturday Apr-18-2020 21:00:48 PDT
Buy It Now for only: $82.66
Buy It Now | Add to watch list

AutoMeter 2607 Z-Series Mechanical Water Temperature Gauge

$117.49
End Date: Monday May-4-2020 18:07:27 PDT
Buy It Now for only: $117.49
Buy It Now | Add to watch list

BMW Fuel Gauges available on eBay

Listings from eBay

2" 52mm Car Fuel Level Gauge Meter w/Fuel Sensor E-1/2-F Pointer 12V Universal

$15.96
End Date: Thursday Apr-9-2020 19:41:49 PDT
Buy It Now for only: $15.96
Buy It Now | Add to watch list

Bmw Z3 Fuelpump fuel level sensor REPAIR 16141183687 16146756323 Tankgeber

$25.00
End Date: Tuesday May-5-2020 4:02:16 PDT
Buy It Now for only: $25.00
Buy It Now | Add to watch list

Fuel Pump Assembly For BMW 323i 325Ci 325i 328Ci 330i 323Ci 325xi L6 E8416M

$27.99
End Date: Wednesday Apr-29-2020 20:57:43 PDT
Buy It Now for only: $27.99
Buy It Now | Add to watch list

Inline Universal High Pressure Fuel Pump With Installation Kit 0580464070

$19.55
End Date: Tuesday Apr-21-2020 0:06:43 PDT
Buy It Now for only: $19.55
Buy It Now | Add to watch list

Universal Fuel Injection Gauge Pressure Tester Test Kit Car System Pump Tool Set

$53.95
End Date: Friday Apr-10-2020 22:49:13 PDT
Buy It Now for only: $53.95
Buy It Now | Add to watch list

Fuel Gauge Level Sensor Sending Unit For Kia Azera Optima 2011-2014 944603R000

$22.39
End Date: Wednesday Apr-15-2020 22:32:50 PDT
Buy It Now for only: $22.39
Buy It Now | Add to watch list

Fuel Pump Assembly For BMW 330xi 330i 325i 128i 135i 135is 325xi 328i E8688M

$47.99
End Date: Saturday Apr-18-2020 6:07:08 PDT
Buy It Now for only: $47.99
Buy It Now | Add to watch list

Screw Gauge, Bolt Nut Screw Thread Measuring Gauge Checker (Standard

$8.95
End Date: Tuesday May-5-2020 14:22:41 PDT
Buy It Now for only: $8.95
Buy It Now | Add to watch list

1pc Funny Car Vinyl Sticker High Gas Consumption Decal Fuel Gage Empty black

$1.69
End Date: Monday Apr-20-2020 7:35:18 PDT
Buy It Now for only: $1.69
Buy It Now | Add to watch list

FUEL PUMP & VACUUM TESTER Carburetor Valve Pressure Tester Gauge Kit Car Truck

$16.24
End Date: Wednesday Apr-22-2020 7:06:09 PDT
Buy It Now for only: $16.24
Buy It Now | Add to watch list

5PK Replacement YELLOW SPOUT CAP Top For BLITZ Fuel GAS CAN 900302 900092 900094

$5.51
End Date: Friday Apr-10-2020 8:06:50 PDT
Buy It Now for only: $5.51
Buy It Now | Add to watch list

3mm White Round Elastic Thin Band Cord Rope Bungee Craft Thread Stretch String

$6.18
End Date: Friday May-8-2020 0:53:12 PDT
Buy It Now for only: $6.18
Buy It Now | Add to watch list

Fuel Pump For BMW 525i 525xi 530i 530xi 2006-2007 for BMW 528i 550i 2008-2010

$51.55
End Date: Friday May-1-2020 13:43:31 PDT
Buy It Now for only: $51.55
Buy It Now | Add to watch list

ADD W1 Fuel Pressure Regulator gauge 0-140 PSI Liquid Fill chrome oil Gauge #140

$18.70
End Date: Thursday Apr-23-2020 21:42:14 PDT
Buy It Now for only: $18.70
Buy It Now | Add to watch list

New 12 Circuit Universal Wiring Harness Muscle Car Hot Rod Street Rod XL Wires

$28.99
End Date: Monday Apr-20-2020 18:42:34 PDT
Buy It Now for only: $28.99
Buy It Now | Add to watch list

0 Comments

Submit a Comment

Your email address will not be published. Required fields are marked *

Please support the site!

Buy Me a Coffee at ko-fi.com
Web Hosting

Restoration Categories

Updates by Email

BMW 2002 T-shirts

Today’s BMW Poll