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EGR valves do not normally require maintenance or replacement for preventative maintenance. But the valve can become clogged with carbon deposits that cause it to stick or prevent it from closing properly. Dirty EGR valves can sometimes be cleaned, but replacement is necessary if the valve is defective.
**Now, as you may already know, exhaust gas cannot recirculate back into the engine at engine idle. If this happens, well the engine is gonna' idle rough and/or stall. Exhaust gas recirculation is normally only permitted at hard acceleration or when the vehicle is already cruising at 30 mph or above and the vehicle is accelerated.
What else can I help you with?
Can a bad fuel regulator make your engine run rough?
yes a fluctuation in pressure could cause it. check pressure with a guage
Will bad fuel pressure regulator on 1992 Legend cause a rough idle?
many different factors can result in a bad idle on a vehicle. some of them is the fuel pressure regulator, the throttle positioning sensor (located on the throttlebody) and faulty plugs & wires, or fuel injectors
Why your impala idles rough but takes off fine?
Most likely cause could be the fuel pressure regulator located on injector rail with vacuum hose attached to it. This vacuum hose when disconnected after the engine has been shut off 15 minutes should show signs of fuel indicating a bad regulator.
What are symptoms of a damaged Fuel Pressure Regulator in a Blazer 98 4.3L V6 Vortec?
If you Google "Symptoms of a faulty fuel regulator" you will get quite a few hits. If the regulator is bad it may cause either a drop in fuel pressure or an increase in fuel pressure at the rail . A drop in fuel pressure, if severe enough, can cause bad or no idle condition, engine starving for fuel and etc. If the regulator is causing excessive pressure it can cause fouled plugs, black smoke from exhaust and rough engine performance. Before you change the regulator check for cracked, rotted or disconnected vacuum hose. Also you can connect a fuel pressure gauge to the schrader valve on the rail and monitor the pressure to see if it is in specifications, or to see if the fuel pressure drops rapidly after engine shutdown. Hope this helps and good luck with your problem. Dan
Could low oil pressure cause the car to idle rough?
Unlikely, Fuel and/or spark are likely culprits.
What problems are caused by a faulty fuel pressure regulator?
you push on the gas and it wont go or runs rough or dies when accelerating /// a pluged fuel filter will also cause thes symptoms as well
What would cause your 1990 300zx idle rough?
my 1990 300zx is idling rough what could cause this?
1998 Chevy Silverado is running rough and smell gas?
If your 1998 Chevy Silverado is running rough and emitting a strong gasoline smell, it could indicate a fuel delivery issue, such as a leaking fuel injector, a damaged fuel line, or a malfunctioning fuel pressure regulator. Additionally, a faulty spark plug or ignition coil could cause rough idling. It's important to diagnose the issue promptly, as a gas smell can pose a fire risk. Consider taking the vehicle to a mechanic for a thorough inspection and repairs.
Infinity g20 idles rough in park?
A new fuel pump helped my 93 G20. Plus try a full tune-up.It could possibly be the fuel pressure regulator or clean or replace your injectors, or replace the O2 sensor.
What could cause your car to idol high and run rough?
A vacuum leak can cause that.
What causes a 1992 Ford Crown Victoria to run rough?
Low fuel pressure, clogged air filter or off timing can all cause rough running. There could be sensor issues or more serious engine internal problems.
How can you diagnose a bad fuel pressure regulatro on 2000 gmc safari van?
To diagnose a bad fuel pressure regulator on a 2000 GMC Safari van, start by checking the fuel pressure with a gauge to ensure it matches the manufacturer's specifications. If the pressure is too low, it may indicate a faulty regulator. Additionally, inspect for fuel leaks around the regulator, and observe if the engine runs poorly or exhibits symptoms like rough idling or stalling, which can also signal a malfunctioning regulator. Lastly, a vacuum line connected to the regulator should be checked for fuel presence, as any fuel in the line indicates a failure.
