How to replace gauges on 2005 BMW 325?

Instrument cluster needs to be removed.

Gauges

Removal & Installation

E30 Models

1. Remove the instrument cluster.
2. Remove the 9 screws from the back of the cluster; 8 arranged around the perimeter and 1 in the center.
3. Pull the housing off the cluster.
4. Remove the gauge mounting screws and pull the gauge off.
5. Install the gauge and the mounting screws. Mount the housing on the cluster and affix the screws.
6. Install the cluster in the dashboard.

Testing

Engine Coolant Temperature Gauge

The engine coolant temperature gauge uses a heat sensitive variable resistance grounding circuit to monitor the engine's coolant temperature.

The coolant temperature information is conveyed to the instrument panel from the gauge temperature sending unit. To test the gauge and its related components, first test the gauge operation to make sure the problem is not in the gauge or gauge wiring. To test the gauge operation, perform the following procedures.

Gauges Using Single Wire Sensors

1. Check the fuses and replace as necessary.
2. With the ignition switch OFF , disconnect the electrical connector from the gauge sending unit.
3. On models with a single wire coolant sensor, connect the wire for the temperature sensor electrical connector to a known good chassis ground.
4. Turn the ignition switch to the ON position for a brief moment. The coolant temperature gauge should register as full hot.
5. If the gauge reads correctly, replace the sensor. If the gauge does not register, check for a damaged or shorted wire, electrical connector or a faulty gauge.

Gauges Using Two Or Four Wire Sensors

1. Check the fuses and replace as necessary.
2. With the ignition switch OFF , disconnect the electrical connector from the gauge sending unit.
3. On 1996-98 models with the 4-wire electrical connector, locate the electrical terminal positions 1 and 2 of the electrical connector (refer to the illustration provided). On E36 M44 models, the terminal position 1 is the brown wire with the violet tracer and terminal position 2 is the brown wire with the yellow tracer, however this may differ from year to year and model to model.

Obtain the listed resistors to achieve the following gauge results:

8,200-10,500 Ohms: Temperature gauge should read cold (12-16°F (-9-11°C))

2,200-2,700 Ohms: Temperature gauge should read slightly warm (66-70°F (19-21°C))

500-400 Ohms: Temperature gauge should read normal operating temperature (174-178°F (79-81°C))

300 Ohms: The gauge should read full hot.

CAUTION

Failure to correctly identify and probe the correct terminals of the four wire electrical connector may cause severe damage to the control unit or other electrical components.

1. Turn the ignition switch to the OFF position.
2. Connect one of the three resistors in series with two suitable electrical probes attached to terminal positions 1 and 2.

CAUTION

Do not force a test probe into an electrical connector. When using an electrical probe use care to not damage the connector. If an electrical connector is damaged it should be replaced.

1. Turn the ignition switch to the ON position for a brief moment and monitor the operation of the engine coolant gauge. The coolant temperature gauge should register as outlined above.
2. If the gauge reads correctly, replace the sensor. If the gauge does not register, check for a damaged or shorted wire, electrical connector or a faulty gauge.
3. For verification purposes, if necessary, test the sensor.

Fig. The electrical connector of the 4 wire engine coolant temperature sensor uses terminals 1 and 2 for the coolant gauge-M44 connector shown

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For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

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The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

-----------------

Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

-----------

Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

-------------

How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

-----------------

How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

--------------------

How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------

car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

-----------------

Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

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The Brake Indicator Light Stays On dash of car?

http://schematicsdiagram.blogspot.com/2011/06/brake-indicator-light-stays-on-dash-of.html

The ABS and Traction Control Lights stays ON dash of car?

http://schematicsdiagram.blogspot.com/2011/06/abs-and-traction-control-lights-stays.html

Check Engine Light On car?

http://schematicsdiagram.blogspot.com/2011/06/check-engine-light-on-car.html

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How to replace Interior Lights on car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-interior-lights-on-car.html

Car lights not working, even after replacing the bulb/lamp?

Click this link below:--

http://schematicsdiagram.blogspot.com/2011/06/car-lights-not-working-even-after.html

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How to replace head lights on car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-head-lights-on-car.html

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How to replace Parking, turn, and Brake Lights on car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-parking-turn-and-brake.html

Distributor Details for 2005 BMW 325?

Distributor

The ignition rotor in the distributor assembly used on the S14 and M20 engines is driven off the front of a camshaft. The sole purpose of the distributor is to distribute the high energy ignition from the ignition coil to the spark plugs. Aside from the distributor cap and rotor there are no additional ignition components located within the distributor housing. The distributor housing serves only as a mounting surface for the distributor cap.
The ignition timing is controlled by the DME control unit. No adjustment is possible.
This details will help.

---------

For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

---------

The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

-----------------

Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

-----------

Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

-------------

How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

-----------------

How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

--------------------

How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------

car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

-----------------

Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

----------

How to do CYLINDER DROP TEST on 2005 Bmw 325?

Diagnosis & Testing

Prior to diagnosis or testing procedures, visually inspect the components of the ignition and engine control systems. Check for the following:

Blown fuses

Poor spark plug connections

Damaged or corroded ignition wires

Damaged or worn electrical insulation

Discharged battery or low alternator output

Ignition module multi-connector condition

Damaged, corroded, or loose electrical connections

Excessively worn, defective, or damaged spark plugs

Excessively worn or damaged distributor cap or rotor

Check the spark plug wires and boots for signs of poor insulation that could cause shorting or crossfiring. Make sure the battery is fully charged and that all accessories are off during diagnosis and testing. Make sure the idle speed is within specification. Check all of the fuel injector electrical connections.

Cylinder Drop Test

WARNING

When performing a cylinder drop make sure the cylinder's high-tension lead for the cylinder being checked is sufficiently grounded. Failure to do so may cause severe and expensive internal component damage.

Fig. These pliers are insulated and help protect the user from shock. They also prevent the plug wires from being damaged

A cylinder drop test can be performed when an engine misfire is present. This test helps determine which cylinder is not contributing to the engine's power. The easiest way to perform this test is to remove and ground the plug wires one at a time for each cylinder with the engine running.

1. Place the automatic transmission in P , and the manual transmission in Nand engage the emergency brake. Then start the engine and allow the engine to reach a warm idle.
2. Using a spark plug wire-removing tool, preferably, the pliers type, carefully remove and ground the ignition wire from one of the cylinders.

WARNING

Make sure not to touch any part of the car that is metal. The secondary voltage from the ignition system is a high-energy spark, and although it is not deadly, the voltage is significant enough to cause a painful electrical shock.

1. The engine will sputter, run worse, and possibly nearly stall. If this happens reinstall the plug wire and move to the next cylinder. If the engine runs no differently, or the difference is minimal, shut the engine off and inspect the spark plug wire, spark plug, and if necessary, perform component diagnostics as covered in this section. Perform this test on all cylinders to verify which cylinders seem low on power.

-----------

For more car related problem troubleshooting:---

This are the sections, you can go through and click the link to read its troubleshooting.

---------

The car will not start?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-start.html

-----------------

Car will not crank?

http://schematicsdiagram.blogspot.com/2011/06/car-will-not-crank.html

-----------

Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

-------------

How to troubleshoot car battery?

http://schematicsdiagram.blogspot.com/2011/06/how-to-troubleshoot-car-battery.html

-----------------

How to test starter solenoid?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-starter-solenoid.html

--------------------

How to test cars starter?

http://schematicsdiagram.blogspot.com/2011/06/how-to-test-cars-starter.html

How to replace starter in car?

http://schematicsdiagram.blogspot.com/2011/06/how-to-replace-starter-in-car.html

-----------

car will turn over but will not start?

http://technoanswers.blogspot.com/2011/05/car-will-turn-over-but-will-not-start.html

-----------------

Car wont start?

http://howtobyme.blogspot.com/2011/10/car-wont-start.html

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