SOURCE: Security System on 2002 Oldsmobile Alero
Try turning the ignition key on to the run position but do not start it leave it this way for aprox 10 minutes. The security light should do something after this amount of time. For example if it is flashing it will go off or stay on some cars are different then others. What this is doing is relearning the key resistance. If it does not work the first time try it again.It sometimes takes several tries.
SOURCE: alero
it could possible be your fuel pump. If your fuel filter is going bad that want stop it from starting. I have a 2002 alero. I done have both fuel pump and fuel filter go bad. so i have a little experience with them.
SOURCE: 2000 oldsmobile alero fast idle
Just fixed mine today, check the vaccum tee off the manifold to the check valve, mine was cracked, repaird with electrical tape for now.
SOURCE: Oldsmobile 2000 Alero side brake lights don't work, center does
does this car have a trailer hitch? if so, check the hitch wires for damage or a short
SOURCE: 2000 oldsmobile alero exhaust problem.
If you can tell where the sound is coming from. Look for any smoke venting out. It maybe that the exhaust manifold gasket is going bad. This will cause exhaust to escape from the engine before the tail-pipe. If this is the case, it will not pass SMOG. Could be dangerous for you health as well.
If this is the case, you should be able to hear the gas escape when giving it some gas in Park. Could be the muffler or any part of the exhaust depending on where it is coming from.
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