Question about 2001 Oldsmobile Alero

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Oldsmobile Alero EGR valve bad

Check engine light on - code shows EGR valve is the problem - can it be repaired by me - could i clean it or must it be replaced ? is this do-able by a shade tree mechanic ?

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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

Posted on Sep 19, 2008

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My 2001 alero has started to skip when accellerated like passing or going up hill

Posted on Oct 13, 2008

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You need to clean the egr port remove egr valve and it is easier if you remove throttle plate you will see the port with carbon built all up on it in plenum this is a common problem
your valve is probably fine

Posted on Sep 19, 2008

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Egr valves are not that expensive. yes, you can change it yourself. google or buy the haynes repair manual. the only thing is that you may bust a knuckle or two in doing so. most egr valves are easily accessible and are two bolts/studs and an exhaust tube. be careful not to break the tube though, it leads down to your exhaust and will not be so easy to repalce. if you own a can of propane or map gas it will make it easier to remove (the tube). it gets hot so don't worry about the heat, just becareful where you aim it and where the heat spreads to (around the egr).
good luck.

Posted on Sep 19, 2008

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Here is a list of possible causes. Some things you have already done.

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Here is the location of your EGR Valve: http://www.autozone.com/autozone/parts/2001-Oldsmobile-Alero/EGR-Valve/_/N-jfkvmZ9ixue

Best wishes,

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Mar 12, 2011 | 1999 Oldsmobile Alero

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Car starts, then dies, security light not on


ENGINE START THEN DIES FUEL FILTER STOPPED UP OR FUEL CONTAMINATED WITH WATER BAD PLUGS AND WIRES FAULTY FUEL INJECTOR..CHECK FOR VACUUM LEAKS AT INTAKE MANIFOLD.LOOK FOR LEAKING VACUUM HOSES.CHECK PCV VALVE.IT SHOULD RATTLE WHEN YOU SHAKE IT IF NOT REPLACE IT..SCAN VECHICLE WITH CODE SCANNER LOOK FOR FAULT CODES LIKE EGR VALVE STUCK OPEN.OR FAULTY IDLE SPEED CONTROL.

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2 Answers

My 99 alero will start but will not stay started. I replaced my fuel pump,,the filter, the crank sensor,,the mass air flow sensor and it still wouldn't stay started. Please tell me whats wrong.


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Dec 15, 2010 | 1999 Oldsmobile Alero

2 Answers

97 oldsmobile sihouette error code p0400. Was told by Advance auto it was a bad egr canister solenoid. Replaced it but still have check engine light on. How do I get it off?


After you have made the repairs go back to Advance Auto and have them remove this stored trouble code .Most places will remove them from your computer for free.

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1 Answer

Loss of power, hesitation, ODBC II error code P0404, SES light come on sometimes


P0404 - Exhaust Gas Recirculation Circuit Range/Performance OBD-II Trouble Code Technical Description

Exhaust Gas Recirculation Circuit Range/Performance
What does that mean?The EGR (Exhaust Gas Recirculation) system's purpose is to redirect exhaust gas back into the cylinders. Since exhaust gas is inert, it displaces oxygen and fuel, thereby lowering cylinder temps, which, in turn, lowers oxides of nitrogen emissions. For that reason it needs to be carefully metered into the cylinders (via the EGR valve) so as not to adversely affect the engine's performance. (Too much EGR and the engine won't idle).
If you have a P0404, then the EGR valve is likely an electrically controlled EGR valve instead of a vacuum controlled EGR valve. Also, the valve will usually have a feedback system built into it that informs the PCM (Powertrain Control Module) what position the valve is in; open, closed, or somewhere in between. The PCM needs to know this to determine whether or not the valve is operating as needed. If the PCM determines that the valve should be operating, but the feedback circuit shows that the valve is not open, this code will set. Or if the PCM determines the valve should be closed but the feedback signal indicates that the valve is open, this code will set.
SymptomsThere may be no symptoms of a P0404 DTC other than the MIL (malfunction indicator lamp) or check engine light. However, Exhaust Gas Recirculation systems are inherently problematic due to carbon buildup in the intake manifold, etc. This normal buildup can lodge in an EGR valve, holding it open when it should be closed. If this is the case, the engine may idle rough, or not at all. If the valve has failed and is NOT opening, then symptoms would be higher combustion temps and as a result, higher Nox emissions. But the latter symptoms aren't going to be noticeable to a driver.
CausesUsually this code points to either carbon buildup or a bad EGR valve. However that doesn't rule out the following:

  • Open or short in the 5 Volt reference circuit
  • Open or short in the ground circuit
  • Open or short in the PCM controlled voltage circuit
  • Bad PCM (less likely)
Possible Solutions
  1. Using a scan tool command the EGR valve to open while watching the actual EGR position (it will probably be labeled "desired EGR" or something similar). The actual EGR position should be very close to the "desired" EGR position. If it is, then the problem is likely intermittent. It may have been a lodged piece of carbon that has since dislodged, or it could be a bad EGR valve winding that intermittently opens or shorts as the valve temperature changes.
  2. If the EGR "desired" position is not close to the "actual" position, then unplug the EGR sensor. Check for a good 5 Volt reference voltage to the connector. If it doesn't show a reference voltage, repair an open or short in the 5 Volt reference circuit.
  3. If there is a 5 volt reference voltage, activate the EGR with the scanner, monitor the EGR ground circuit with a DVOM (Digital Volt/Ohm meter). It should indicate a good ground. If it doesn't then repair the ground circuit.
  4. If there is a good ground, then check the control circuit. It should indicate voltage that varies according to the percentage that the EGR is open. As it's open more, the voltage should increase accordingly. If it does, then replace the EGR valve.
  5. If the voltage doesn't increase incrementally, then repair open or short in EGR control circuit.

Oct 22, 2010 | 2001 Oldsmobile Alero

1 Answer

My 99 Alero starts up then dies after 1 second. I


check air flow duct where the throttle valve is . check the pvc valve . make sure it isnt stuck open. check the egr valve . it will stick open stall out motor .use a scanner it will tell you if you got egr valve problems. check fuel pressure. it could be stop up fuel filter bad fuel pump fuel pump relay.your car problem sound like a major vacuum leak . change spark plug and wires if they have not been change in a while. it could idle air control. hook a scanner .it could give you a code.

Mar 22, 2009 | 1999 Oldsmobile Alero

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