So Fix it

The Chrysler Concorde, also known as the sister car to the more popular Dodge Intrepid, came from the factory with two V-6 engine options; a 2.7-liter engine and a more-powerful 3.5-liter engine. Of the two engines, the 3.5-liter engine was noted for its increased reliability over the smaller engine, which was prone to oil sludge problems. To help control and monitor the engine temperature, the 3.5-liter engine contains a coolant temperature sensor, located on the thermostat housing at the front of the engine.

Instructions

1

Start the engine and allow it warm to operating temperature, which is 200-degrees Fahrenheit.

2

Locate the coolant temperature sensor on the top of the thermostat housing. Its mounted vertically and has two wires protruding from its base.

3

Disconnect the coolant temperature sensors two-wire electrical connector. Measure the resistance across the sensors two terminals with a digital multimeter; the specified value is 700 to 1,000 Ohms.

4

Let the engine cool down for three to four hours until the coolant is at room temperature. Measure the resistance again across the terminals with a digital multimeter. The resistance at 70-degrees Fahrenheit should be between 7,000 and 13,000 Ohms. If the resistance falls outside either of the hot or cold values, the sensor must be replaced.

5

Measure the resistance across the pin terminals on the sensors electrical connector. If the resistance is greater than 1 Ohm, replace the sensors connector.

The emission controls on an Oldsmobile Cutlass are fully integrated with ignition and fuel system controls. All of these control systems work together to ensure the engine works efficiently with minimal production of harmful exhaust gases.

Crankcase Ventilation System

The crankcase ventilation system controls unburned fuel vapor that leaks from the pistons into the crankcase. Normally these vapors would leak into the atmosphere since they are under pressure. If left alone they contaminate the engine oil and allow sludge to build up in the crankcase. The crankcase ventilation system recycles these gases back into the air intake so they can be re-burned in the pistons. The Positive Crankcase Valve (PCV) controls how much of the gas is recycled at any given time.

Evaporative Emission Control System

The Evaporative Emission Control System (EEC) is a carbon canister that reduces emissions of fuel vapors from the fuel system. It stores fuel vapors and vents them through a filter containing activated charcoal. The charcoal absorbs vapors while the engine is not running. The charcoal releases the vapors into the air intake manifold when the engine is running. A solenoid closes the canister to air when the engine is turned off so that fuel vapor is not lost to the atmosphere.

Exhaust Gas Recirculation System

The Exhaust Gas Recirculation System, or EGR, reduces oxides of nitrogen emissions. Nitrogen oxides are often written as "NOx" and they are harmful to human and animal health. The EGR is a valve which, under certain conditions, allows some exhaust gas to recirculate into the intake manifold. The exhaust gas then cools combustion temperature and controls detonation of the fuel/air mixture. The EGR valve is mounted on the intake manifold and uses manifold vacuum to open up and vent some exhaust gas into the intake manifold. It is activated only when the engine reaches normal operating temperature. Too much exhaust flow into the intake manifold can cause stalling after a cold start or during deceleration.

Thermostatic Air Cleaner

The Thermostatic Air Cleaner (THERMAC) warms air entering the carburetor when the engine is cool and maintains a controlled air temperature into the carburetor. This reduces the amount of time the choke needs to be on and results in better fuel economy and lower harmful emissions.

Air Management System

The Air Management System injects oxygen into the exhaust ports, exhaust manifolds and catalytic converter to burn off any fuel vapor left in the exhaust gas. The system shuts off only during deceleration or rapid acceleration to prevent backfiring. The system reduces the levels of hydrocarbon and carbon-oxygen combinations in exhaust gases.

Traction control may be any method of reducing the loss of traction that occurs when the driver applies too much throttle for the current road conditions. It is a secondary function of the anti-lock braking system, or ABS, in a 2004 Mustang. A hydraulic control unit, or HCU, typically has a hydraulic line for each wheel and and an additional line for the master brake cylinder. An HCU with traction control has a sixth hydraulic line for the traction controls brake cylinder.

Instructions

1

Disconnect the cable from the negative terminal of the Mustangs battery with a socket wrench. Detach the electrical connector from the ABS control module. The ABS control module is a small, box-shaped component that sits on top of the HCU in the engine compartment. The traction control module, or ABS control module, determines the braking force to apply to each wheel in order to minimize the loss of traction.

2

Remove the brake lines from the HCU with a socket wrench. Plug the open ends of the brake lines with shop rags to prevent brake fluid from leaking out of the brake lines.

3

Remove the nuts that attach the HCU to its bracket with a socket wrench, and detach the HCU from its bracket. Detach the electrical connector from the brake pump motor.

4

Disconnect the mounting screws from the ABS control module with traction control by using a socket wrench. Separate the ABS control module from the HCU.

5

Mount the new ABS control module with traction control to the HCU. Fasten the mounting screws for the ABS control module with a socket wrench. Connect the electrical connector for the brake motor pump.

6

Mount the HCU to its bracket, and tighten the bracket nuts to 13 foot-pounds with a torque wrench. Remove the shop rags from the open brake lines, and attach the brake lines to the HCU. Tighten the fittings for the brake lines to 14 foot-pounds with a torque wrench.

7

Attach the electrical connector for the ABS control module. Connect the battery cable to the negative battery terminal with a socket wrench.