PALACIO239. 1998 - 2000 Ford Escort. following codes. Truck runs great except for the damn light. egr valve problems. August 1, 2003. recently got engine light on and read code P0401 :Exhaust Gas Recirculation Flow Insufficient Detected. Hello forum – this is my first post. Replaced egr valve. 39). When the valve opens you will see the voltage on the top wire of the DPFE sensor change indicating flow. Step on the brake pedal for 30 seconds. Symptoms of a bad EGR valve • Rough idle—Carbon buildup on the tapered seat prevent the pintle from seating allowing exhaust gas to flow into the engine at idle and choke it, leading to a very rough idle. 0 v6. Make sure the pins in the connectors are good and tight too. uses the EGR valve only as a pressure regulator, rather than a flow metering device. the EGR is warranted to 80,000 miles. Electrical problems with the EGR circuit. The EVR is responsible for supplying the proper vacuum to the EGR valve. Others rely on an electric signal. The rpm may be sporadic, raising and lowering. I replaced the egr valve on my 2000 ford ranger 3. Posted by Jacob on Feb 28, 2013. Any resistance in this control circuit or failure of the EVR can cause a P0401 code. change egr valve 3 ford ford egr vacuum solenoid. It is on the drivers side where the air intake hose comes from the air filter. 4WD. If possible, check the movement of the valve stem at 1500 to 2000 rpm. Car rides find with jus a slight shutter in changing from 1st. Hg of vacuum to the sensor. change egr valve. 4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab ChassisI'm assuming this is P0402: Exhaust Gas Recirculation Flow Excessive Detected These are the possible causes: EGR valve stuck open EGR VSV open malfunction Open in VSV circuit for EGR Short in EGR gas temp. Carbon deposits affect the performance of the EGR valve in two ways -- firstly, it causes physical blockage of the exhaust gas flow path through the valve and secondly, it makes the opening / closing of the valve by the electronic actuator sluggish. Now I want to repair. Install a new EGR valve tube. I got a code P0402, EGR flow excessive, does that mean the EGR valve is bad? - Answered by a verified Ford Mechanic. Their solution was found in the use of exhaust gas recirculation (EGR). 95,000 miles. Clean out the EGR valve and/or tubing to remove deposits. If you want a quick fix if your egr valve is causing a rough idle. ¹Offer valid through 12/31/23 on qualifying purchases made before tax. To diagnose the P0402 1997 Ford F150 code, it typically requires 1. To make it easy for you to test the particular DPFE sensor on your Ford (or Mercury or Lincoln) car or truck, I have included images of all three types of DPFE sensors with the specific circuit (you need to test) highlighted. if the egr has been replaced,it should be ok,try changing the fuel filter,run a good fuel injector cleaner in a tank of gas,sea fome or lucas is best. I have replaced the valve and cleared the code. ESM stands for EGR System Module and is similar to the DPFE system, using most of the same components integrated into one part. The test for a stuck open EGR valve or EGR flow at idle is continuously performed whenever at idle (TP sensor indicating closed throttle). The check engine light is on and reads "EGR excessive flow". 5 - 1997 7. After locating your vehicle’s EGR valve, use a scan tool to control it. the code is p0402 - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. But before you jump straight to replacing the valve, see if you can’t clean it first. 257 satisfied customers. In most vehicles, the location of this part is close to the intake manifold or directly in the EGR-cooler, if available. It is common for most auto repair shops to charge between $75 and $150 per hour. 2WD. Labor: 1. . CLUB. 20-0. relacion de codigos ECM, diagnostico mecanica automotriz. changing. FORD F-150. A code P0401 most likely means one or more of the following has happened: * The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced. We replace the EGR valve on my son's 1999 Ford ranger after getting those codes when the check engine light came - Ford 1999 Ranger SuperCab question. The amount of gas cycled back into the engine is typically not more than 10%. To Install: Installation is a reverse of the removal process. 2002 Ford Taurus 3. Remove the Old EGR Valve. Your power and fuel mileage will go up. Place each bolt back onto the valve and tighten with the socket wrench. Updated: July 25, 2021. Disconnect the pressure hoses at the DPFE sensor. AUTODOC. 0 hour of labor. Code P0402 is often set when the EGR monitoring sensors are still showing EGR flow after the EGR monitoring tests are complete. Check for a possible collapsed air intake duct, restricted air filter element, or foreign objects blocking the air intake system. Idle Speed Control Motor (ISC) not workingThe Valve and the EGR cooler are normally located near the engine block. Remove and discard the old gaskets. CASE 2: The engine idle grew worse as you applied vacuum with the vacuum pump and the vacuum pump's gauge needle DID NOT stay steady. I brought it to meineke, and. One of the most common symptoms of a problem with the vehicle’s EGR valve is a rough idle. With a P0402, it is common for people to replace the EGR valve, only to have the problem return. As odd and unlikely as it is, the components (all four O2 sensors, EGR module, and purge valve) could be faulty. - EGR volume control valve stuck closed. The EGR valve may not be opening due to a lack of vacuum. Make sure the pins in the connectors are good and tight too. The EGR system on a vehicle is responsible for recirculating exhaust gasses in order to lower the vehicles emissions output. 5 volts. P0401 "Exhaust Gas Recirculation (EGR) valve, insufficient flow detected". Detach the vacuum line (#1) and unbolt the EGR valve - 2. I created this video with the YouTube Video Editor (definition: Exhaust Gas Recirculation (EGR) Flow Insufficient Detected. In most cases, vehicles will throw a P0404 code because of a stuck valve. If possible, check the movement of the valve stem at 1500 to 2000 rpm. Jun 18, 2011 • 1999 Ford Taurus. Solutions. This code is similar to P0400, P0401, P0402, P0403, P0404, P0405, P0407, P0408, P0409. Carefully unscrew the two 8mm bolts, and then you can twist the EGR valve to remove it. 2. exhaust gas recirculation,insufficient flow. Based on this data, the PCM assesses the flow through the EGR system and, when needed, regulates it with an EGR control valve. I have replaced the egr valve twice but still have the same symptoms. The code is for egr flow excessive but the problem is ford uses this sensor to detect and monitor egr flow, and the voltage gets out of range or too high at idle and the pcm detects what it thinks is egr flow when there should not be and sets the code. This takes a lot of elbow grease because, the gasket is made out of a special sandwiched material because of the heat issues. fault code. Read full answer. SOURCE: 1999 FORD EXPEDITION 2WD 4. 99 percent chance sensor is bad. Possible Causes: - Harness or connectors (EGR volume control valve circuit is open or shorted. The OBDII fault code P0401 means that the engine computer has detected that the Exhaust Gas Recirculation (EGR) system flow is insufficient. Check the voltage at the DPFE sensor both at idle and when the EGR is open. First get into your Escort and turn the ignition to the “ON” position. Brand new 142. P0400: Exhaust gas recirculation (EGR) flow problem. The code says low flow egr valve. fixaski. - EGR passage clogged. Since the light was still on, I went ahead and replace the EGR valve (as this is the final component in the EGR system). 0 that will suddenly go to an extremely high idle (2000 +) when the - Ford 1999 Escort question. Let's analyze your test result: CASE 1: You were able to blow compressed air thru' the EGR valve's inlet opening to its. Guidelines Integrated. 0L. Trouble code P0402 means: Exhaust Gas Recirculation Flow Excessive Detected Replace EGR valve Egr insufficent flow? 2001 ford windstar has code PO401 erg insufficent flow. The most likely solution is to replace the DPFE sensor. 6L EGR VALVE,EGR Remove the throttle body housing on the top of the intake, it is a 90 degree tunnel like small piece held by 4 small bolts, turn it over and look for two holes, these holes are for the EGR valve flow, they are probably plugged up with carboned crud, clean them out with the tip of a screwdriver if neccessary to remove all the crud, once its. The basic function of an EGR system is to route a portion of spent exhaust gases back into the engine's intake tract. A code P0402 most likely means one or more of the following has happened: The DPFE (differential pressure) sensor is faulty and needs to be replaced There is a blockage in the EGR (most likely carbon buildup) The EGR valve is faulty The EGR valve may not be opening due to a lack of vaccuum. SOURCE: 1999 FORD EXPEDITION 2WD 4. The engine should stall or come close to stalling if the EGR valve and ports are good. CO. Just take out the two bolts holding it in. The service engine light has come on for my 1999 Ford Escort showing the following codes: P0761, P0401 & P0402. In this two pin example this is easily done. It could be that the egr tube is clogged or the egr itself is bad or there is not enough vacuum to open the egr properly. Today I changed it out. 1: Pneumatic EGR valves are actuated with the aid of electro-pneumatic valves. 9L is located between the engine and the radiator. Most problems are assc with the sensor that senses flow. The amount of gas cycled back into the engine is. DPFE sensor failures are VERY COMMON on Ford vehicles. With a P0402, it is common for people to replace the EGR valve, only to have the problem return. 6. The average in the UK is about £60 – £150 per hour. I found a cracked vacuum line from EGR vacuum solenoid to EGR and replaced it. It is approximately 3 inches wide. Here is a list of possible causes. The EGR tube can be cleaned. I have a 1997 Ranger STX extended cab 4x4 with a 4. With a P0402, it is common for people to replace the EGR valve, only to have the problem return. Once all bolts are replaced and tightened, close the hood. Browse Categories. 6 people found this helpful. 2. Post by kennys35 » Thu Feb 04, 2016 6:49 pm. read more. Do not use excessive force during installation. Start engine and make sure Check Engine light is out. EGR valve stuck closed. A change in the. It sounds like you have a restriction in the EGR system. P0401 code definition. So, I see no reason to replace the EGR Valve alone, just so it too can be damaged by the poor fuel. 0 hour of labor. The EGR valve works by routing a small amount of exhaust back into the combustion chamber. @bismic The way I read that pin point test, the values for the pot are: D-C 1300 - 1330 ohms : C-B 4275 - 4285 ohms : B-D 4515 - 4525 ohms. Read full answer. P0406 code definition P0406 is a general ODB2 trouble code indicating a fault within the exhaust gas recirculation EGR circuit. Part Number: REPF509202. If the EGR pressure sensor sends any false reading to the computer it can cause the EGR system to malfunction. 25. 3L Power Stroke Diesel; 1994. When I went to Auto Zone they gave me a list of things to change so I did. SOURCE: 2001 Ford Escape EGR Valve Keeps Cracking its the cloged right cloged catalytic convertor the egr vales pressure comes from ther when the cat is cloged,it looks for another pressure eixt point which there are only 2 though the muffler if not cloged then 2nd egr im going throug a rough time with this as well,because they are charging. My 1997 EX has the 5. Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. Common mistakes when diagnosing the P0400 code. A malfunctioning EGR system can lead to engine performance issues such as rough idle, engine hesitation, and a decrease in overall power and fuel efficiency. Question about 1998 Ford Escort. 02 pounds per minute. P0402 will then be thrown. AUTOMATIC. Re: EGR Flow Insufficient (PO401) I'm assuming you checked for carbon deposits in the barbs for the hoses connecting the DPFE to the EGR tube. Shop for New Auto Parts at 1AAuto. the engine light came back on I hooked up my scanner and got a p0401 code egr flow insufficient and p0402 egr flow excessive detected what's up. In this two pin example this is easily done. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. The first sign of a failing EGR valve is when your vehicle undergoes a rough engine idle, either when starting the engine or during brief stops. Also, carefully remove the mounting bolts holding the valve. The EGR valve is not always the culprit. These gases help keep the engine’s combustion temperature under 2500 degrees Fahrenheit. Truck: 1998 F150 XL 2wd 4. If the inferred ambient temperature is less than 0°C (32°F) , or greater than 60°C (140°F), or the altitude is greater than 8,000 feet (BARO less than 22. Ford has a new design sensor moisture gets in the old style and ruins it. See All Products Details. EGR excessive flow detected?!NOTE: The EGR valve sealing surfaces are soft metals and easily damaged. Excessive gas flow - Answered by a verified Ford Mechanic. 0 v6. The EGR system on a vehicle is responsible for recirculating exhaust gasses in order to lower the vehicles emissions output. Quick Navigation. A code P0401 most likely means one or more of the following has happened: The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced. Notes : Pin type; 6-prong male terminal; Includes gasket and mounting bolts Quantity Sold : Sold individually Warranty : 1-year Replacement unlimited-mileage warranty. The next step is to verify that the DPFE sensor is working correctly. Agreed, sounds like the EGR cooler failed. Follow removal procedure in reverse order. The most likely solution is to replace the DPFE sensor. The engine idle will be rough, frequently stumbling and unable to hold a steady idle rpm. Started with chugging in wet weather, diagnosed as cylinder 4 & 5 misfires, I replaced spark plugs. Strong resistance of airflow should be felt. It’s important to note that code P0402 is often set in Ford vehicles that use a.