I went to autozone and the code stated I needed to replace EGR Valve now truck is cutting off and jerking really bad
It's been my experience (on a 2005 Dodge Ram 1500 SLT) that the EGR valve can cause piston lifters to malfunction leading to costly repair bills. The easiest and least expensive repair I've found is to disconnect the vacuum hose from the brake booster, and use it to **** some Seafoam into the EGR valve. This is only a temporary fix, though.
SOURCE: no vacuum to egr valve
there is an EGR vacuum solenoid somwhere that controls on/off vacuum to actuate the valve. i am not to sure of the location, but follow the vacuum line back from the egr until you find a device that looks like an electrical check valve for vacuum. that is a possibilty. but then again i am a ford,chrysler guy and am just giving you an answer based on my understanding of the functuality of a vacuum egr system
SOURCE: How do you clean the EGR valve on a 99' Honda Civic?
Pull vacuum on egr valve with engine idling and see if engine stumbles and tries to die until vacuum is released. If this DOES NOT happen the egr exhaust passage is plugged will need to remove egr valve assembly and remove carbon from passage into cylinder head.
SOURCE: Error Code 406 EGR Positions Sensor
yes it is..you need to replace egr valve assembly..make sure you disconnect battery while replacing..some times fault will return even after replacing valve..
SOURCE: EGR Valve, O2 Sensor
Absolutely a bad o2 sensor can cause problems with performance. If you replace one it is highly recommended to replace both or all four depending on your vehicle. If one o2 sensor is making your vehicle run rich you will burn more fuel and in return increase the amount of carbon or unburnt fuel if you will in your egr valve you could probably get away with cleaning it but I would recommend replacing it, it will save you from having to pull it off again. Check your catyletic converter because long exposure to carbon will mess it up.
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.
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