Silhouette Van

Some auto repair questions and answer related to the Oldsmobile Silhouette.


1999 Oldsmobile Silhouette. 3.4 V6
Question: Days after rebuilt the engine the check engine light came on do I went to the auto parts to connect the scan and the guy told me the problem was code P0440 but the light has been coming on and out. Thanks.

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2000 Oldsmobile Silhouette.
3400 V6 engine.
Question: I had my van at my parent's to help my brother fix his same make and model van A/C doesn't work. He unplugged the compressor to check voltage on mine to see if it was the same as his

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Transmission problem with my 2000 Olds Silhouette Premiere.

Check engine light. Scanned GM Computer code P0742.
I had the filter and fluid changed added Transgard.

My transmission keeps messing up when warm changed fluid and filter added Transgard worked for awhile and started again after long trip.

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How Things Work

How Does the Catalytic Converter Work

A 3-way catalytic (TWC) converter is used on most newer cars and trucks in order to control the exhaust emissions of hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx). The catalyst within the converter promotes a chemical reaction which oxidizes the HC and the CO that is present in the exhaust gas. This process will convert the HC and the CO into a water vapor and CO, and will reduce the NOx, converting the NOx into nitrogen.

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Common Engine Codes

Code P0171 Fuel Trim Error

The powertrain control module (PCM) controls the air/fuel metering system in order to provide the best possible combination of driveability, fuel economy and emission control. Fuel delivery is controlled differently during Open and Closed Loop. During Open Loop, the PCM determines fuel delivery based on sensor signals, without oxygen sensor (O2S) input.

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