SOURCE: Oldsmobile Alero EGR valve bad
yes you can do it yourself the egr valve is located on the exaust manifold closest to the fire wall unfortunately it has to be replace. it has an electronic lead to it and is vaccum operated to replace it is not a difficult task. the part can be purchased at a Napa or Oreilly's for alot less than at a dealership. just make sure your gasket surfaces are clean for replacement of new gaskets. if you have a code reader than can reset the code that is a benefit however if you do not you have to have a scan tool to reset the code. please rate the solution....thanks
SOURCE: 1997 ford explorer check engine lite is on.Code
you probably have blocked passages in the intake manifold. remove the egr and check the port for a clog. you can scrape most of the carbon out with a pick or screw driver and then use some spray carbon cleaner in there. also check the metal exhaust line to the egr
Testimonial: "i looked at what was discribed and that wasnt it.Good thought thouh"
SOURCE: 1999 FORD EXPEDITION 2WD 4.6L 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 clean reinstall it and reset your check engine light, hope this helps, let me know
SOURCE: 1997 Oldsmobile Cutlass P0405 EGR Error Code
P0300 Diagnostic Code - Random Misfire
Technical description:--
Random/Multiple Cylinder Misfire Detected:---
Exactly what does this code means:--
Basically this means that the the car's computer has detected that
not all of the engine's cylinders are firing properly.
A P0300 diagnostic code indicates a random or multiple misfire. If
the last digit is a number other than zero, it corresponds to the cylinder
number that is misfiring. A P0302 code, for example, would tell you cylinder
number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically
which cylinder(s) is/are mis-firing, nor why.
Symptoms:--
the engine may be harder to start.the
engine may stumble / stumble, and/or hesitate.
other symptoms may
also be present…There may be rough idle,
sputters and stalls and jerks.
Causes:--
A code P0300 may mean that one or more of the
following has happened:
Faulty spark plugs or wires, Faulty coil (pack), Faulty oxygen sensor(s)
Faulty fuel injector(s),Burned exhaust valve, Faulty catalytic converter(s)
Stuck/blocked EGR
valve / passages, Faulty camshaft
position sensor, Defective computer.
Possible solutions for this error problem:--
If there are no symptoms, the simplest thing
to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is
stumbling or hesitating, check all wiring and connectors that lead to the
cylinders (i.e. spark plugs). Depending on how long the ignition components
have been in the vehicle, it may be a good idea to replace them as part of your
regular maintenance schedule. I would suggest spark plugs, spark plug wires,
distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a.
coil packs). In some cases, the catalytic converter has gone bad. If you smell
rotten eggs in the exhaust, your cat converter needs to be replaced. I've also
heard in other cases the problems were faulty fuel injectors.
Random misfires that jump around from one
cylinder to another (read: P030x codes) also will set a P0300 code. The
underlying cause is often a lean fuel condition, which may be due to a vacuum
leak in the intake manifold or un-metered air getting past the airflow sensor,
or an EGR valve that is stuck open.
Thanks. Keep updated for any more query. You can rate this
solution and show your appreciation.
SOURCE: my 1994 firebird with a 3.4L check engine light
REMOVE EGR VALVE CLEAN OUT THE CARBON INSIDE THE EGR VALVE PORT HOLE IN THE INTAKE MANIFOLD WHERE EGR VALVE SITS.CAREFULLY USE A PIECE OF CLOTHES RACK OR A TINY SCREW DRIVER CLEAN CARBON OUT ROUND HOLE.USE A SHOP VAC TO VACUUM UP THE DEBRIS TO KEEP FROM GETTING INSIDE INTAKE.DONT USE SHOP VAC IF YOU HAVE ANY FUEL LEAKS OR SMELL GAS FUMES UNDER THE HOOD.
Testimonial: "thanks will give it a try."
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