Our FISPA range of sensors and electrical components is already proving to be very popular. It features many items that are experiencing fast rising demand in the aftermarket, with one of the fast movers being EGR valves.

 EGR valves control the engines emission of Nox by re-circulating a portion of exhaust gas. They are important components, but are sometimes prone to clogging and eventual failure. Common symptoms of a failing EGR Valve are; rough idling due to the EGR valve mechanism staying open, knocking noise from the engine due to the EGR valve mechanism staying shut, increase in Nox emission and erratic engine functioning. These symptoms will often cause the check engine light to come on.

There are a number of different ways an EGR valve can fail, and many factors that can cause them to fail. Below are some of the most common cause of failure:

 Insufficient flow in the EGR system is usually down to a build-up of carbon or other impurities and can sometimes cause the valve to get stuck in the closed position. There are other reasons for lack of flow such as problems with the Differential Pressure Feedback Sensor, common on some Ford engines, problem with the EGR vacuum switching valve, often found on Toyota vehicles, a clogged catalytic converter or Diesel particulate filter (DPF), carbon build up in the temperature sensor, or electrical issues.

Excessive EGR system flow occurs when the mechanism is stuck open. This is sometimes due to a clogged or dirty air filter, an intake leak, or turbo issues. Catalytic Converter clogging can also be an issue, or a there may be a fault with the EGR temperature sensor, valve gasket, vacuum control or switching valve. Problems with the DPEE sensor causing this issue are common on certain Ford and Mazda models, while Nissan vehicles can be prone to a fault with the EGR Control Back Pressure Transducer valve.

If the EGR Valve is faulty it will decrease driving performance and increase fuel consumption. If the issue is not resolved it can also cause damage to other systems and components.

The FISPA range from ADE features replacement EGR valves for a wide range of makes and models, all detailed on TecDoc. FISPA is a very well respect OE supplier and has over 25 years experience in this specialist field. Its high quality components are produced in ISO accredited factories and are competitively priced to offer big savings over dealer alternatives.