Emissions Archives - Page 7 of 24 - UnderhoodService
Diagnosing A 2011 Chrysler Town & Country With Trouble Code P0152

Verify the wiring to the O2 sensors is normal. These sensors will normally switch between 2.5 volts and 3.5 volts when they are working correctly. The sensor ground will have 2.5 volts on it and this is normal for this vehicle.

Diagnosing And Replacing Oxygen Sensors

An oxygen sensor test can be used to assist technicians in verifying the oxygen sensor operation, but it should not be the only test used to determine if a sensor should be replaced. Most scan tools have an oxygen sensor tests function (also known as Mode $05), which allows a technician to view the data readings for the oxygen sensor(s).

Pulling Codes: The Importance Of Communication – No Code Analysis

For this month’s Pulling Codes case, we will attempt to provide a plan of attack for communication issues on General Motors products with the Class 2 Protocol. Our diagnostic journey begins with a 2004 Chevrolet Tahoe. This vehicle was tested at the EPA test facility in our area and it was determined that there is no communication with the PCM.

Tech Tip: Coil-On-Plug Misfire Diagnostic Tips For Ford/Lincoln/Mercury Engines

The misfiring cylinder must be identified through Self-Test misfire codes or through WDS Power Balance. Rule out base engine problems; rule out fuel problems; and then look at
ignition problems (be sure to rule out coil primary circuit issues).

Tech Tip: Don’t ‘Blow By’ PCV Inspections

Most emission control parts, like the PCV valve, require little if any scheduled maintenance, but replacement may be necessary if the Check Engine light is on, the vehicle has failed an emissions test or is experiencing a driveability problem. Other emission control components include the exhaust gas recirculation (EGR) valve, the evaporative emission control system (EVAP) vapor canister and purge valves, the catalytic converter, oxygen sensors and all of the engine’s other engine management sensors.

Exploring the Service Needs of the Ford 4.0L V6 Engine

The 4.0l SOHC engine was found under the hood of many Ford SUVs and light trucks, as well as 2005-10 Mustangs.

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Tenneco Supplying Emission Control Technologies On 2014 Chevrolet Corvette Stingray

Tenneco announced it is supplying key emission control technologies, including electrical valves, for the 2014 Chevrolet Corvette Stingray, one of the most highly anticipated vehicles debuting in 2013. Considered one of the key performance features of the car, the Corvette’s exhaust system delivers a unique signature sound.

A/C Update: German Automakers To Develop CO2 A/C Systems

Geneva International Motor Show exhibitors Volkswagen, Daimler AG, Porsche, Audi and BMW agree to develop CO2 A/C systems for their vehicles.

Tech Talk: Biomass or Bio Mess?

Addressing the issues associated with ‘Home Brewed’ Bio-Diesel

Dorman Products Releases March New Product Announcement Featuring More Than 115 Parts

Dorman Products has released its March New Product Announcement, featuring 117 new parts, 29 of which are exclusive formerly “Dealer Only” parts.

Spectra Premium Launches Oxygen Sensor Promotion

Spectra Premium is launching a promotion to support its newest product category, oxygen sensors. From March 1 to April 30, customers purchasing $1,000 in oxygen sensors will receive a 15 percent discount.

Spectra Premium Introduces New Line Of O2 Sensors

They are 100 percent performance-tested to meet vehicle requirements with all accessories included for installation, the company says.