TheEGR valve is a PCM (Powertrain Control Module) controlled valve that allows measured amounts of exhaust gasses to pass back into the cylinders to be burned with the air/fuel mixture. Since exhaust gas is an inert gas that displaces oxygen, injecting it back into the cylinder can lower combustion temperatures which helps to improve NOx

Wed11 Apr 2007 23:04. Clio 1.5DCi EGR - PhilW. Quick Q chaps. Am at daughter's and she has just had probs with above car. She commutes 50 miles per day, mainly motorway and she does not hang about. Her '04 Clio has done 65k and had a new EGR about 18 months ago. The other day it suddenly lost power on the M11, dropping
However these symptoms often vary on a case-by-case basis and might differ substantially from one make or model of vehicle to the next. The following are the most common symptoms associated with DTC P0402. Sudden illumination of a check engine light. Rough, or unstable idle. Potential exhaust leaks.
Astored code P049A means that the powertrain control module (PCM) has detected a malfunction in the exhaust gas recirculation (EGR) system "B" flow for a particular step-down setting. The designation "B" refers to a certain position of the step-down EGR valve. Either an electrical problem or a mechanical problem may cause a code P049A to be
TOPRAN639 168 EGR Valve. Electric Article number: 639 168 Trade numbers: 639168001. (reviews - 3) Product info: Vehicle type: K9K 636. not for emission standard: Euro 5. Operating Mode: Electric. Observe the vehicle manufacturer specifications. 3 Occasional Misfires. As a bad EGR valve worsens the imbalance in the fuel/air mixture results in unburned fuel deposits that can cause misfires. The longer the problem persists the more often misfires will happen, and the more risk you will be at for damaging your engine as well as your exhaust system. 4.
Disclaimer I'm having a resistent problem with EGR valve on 2.0 dci engine (150 bhp). Below is summary of information from Clip. Now the weird part: after the EGR valve replacement function is executed, the PR128 and PR129 values should read 0, at least in the way I understand it. But despite the function being flawless executed, the
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    • 1.5 dci egr valve symptoms