Buick Open EGR valve catching phenomenon is more common, it is the fault code P1404, marlborough rf

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Buick Open EGR valve catching phenomenon is more common, it is the fault code P1404, marlborough rfc this is the case, we must first repair the engine fault indicator lights on the dashboard to alert the driver as soon as possible to go to the repair shop for maintenance, Light emission of non-compliance, idle instability, marlborough rfc severe affect dynamics. EGR valve is installed between the exhaust manifold, according to the engine coolant temperature sensor, throttle position sensor marlborough rfc signal and the air flow sensor to the instruction, adjust the position of the EGR valve pivot from the power system control computer PCM, a small amount of exhaust gas back combustion chamber, so that the fuel / air mixture thinning to reduce nitrogen oxides due to high temperature combustion (NOX) emission levels. marlborough rfc Meanwhile marlborough rfc PCM also monitors the EGR valve pivot position sensor input signals, marlborough rfc ensure that the valve on the PCM command to make the right response. When the EGR valve feedback signal voltage higher than 0.2V, and the time over 20s, PCM will store the fault information, Qiliang engine fault indicator. Because marlborough rfc of the environment in the EGR valve, long-term bear the pollution emissions, working a long time, the valve and the valve port bound to adhere some coke, fuel quality used when non-compliance, resulting in incomplete combustion, resulting in seizure of will greatly increase the chance that once PCM detects the actual pivot location and setting the EGR valve is biased, it will record the fault information stored code P1404, Qiliang engine fault indicator. In response to this common failure, on the part of the open and there is catching marlborough rfc the EGR valve P1404 fault code for the disintegration of research carried out on its internal structure marlborough rfc detailed examination, analysis, that the solenoid valve coil, tiles pivot position sensors, such as the quality marlborough rfc of the pivot reliable, stable performance, sensitive, and accurate response, no problem. The so-called open-catching coke is produced between the valve and the valve port pivot position marlborough rfc has changed, resulting in a change in the pivot position sensor resistance value, marlborough rfc PCM signal is detected voltage setpoint actual pivot location is incorrect, points fault indicator lit up. Through the study of the disintegration of the EGR valve, know the causes catching phenomenon, marlborough rfc so to have the fault code P1404 EGR valve taken coke removal methods, the vast majority due to fuel quality caused by catching phenomenon returned to normal. Specific marlborough rfc methods of operation are as follows: Remove the EGR valve from the engine, the sensor marlborough rfc fastening lid removed, the sensor marlborough rfc vertically pulled up. The pivot bushing with 8mm locknut trap, gently push down the valve, the oil and mix thoroughly with the prior research frosted No. 180 between the valve and the valve port a little into, and then pivots back and forth, as the valve better friction between the valve port and can end with an iron bar to hold the valve in the bottom of the valve, marlborough rfc so engaging, reliable, and grinding of engine valves for the same reason that the grinding out of coke, with carburetor cleaner will research matte wash, but beware, the valve must be down to avoid corrosion of the solenoid valve coil cleaning agent, then the sensor can be partially restored loading use. By taking abrasive cleaning methods to remove the EGR valve coking process can still be used normally. Article Source: Adapted from "domestic cars Troubleshooting instance selection (two)" Author: Zhang Fengshan hair Comments marlborough rfc