Question about Oldsmobile Alero

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Our 2001 alero starts great and runs good when cold.. once warm say you at a stop sign and want to go you will see the rpm's drop then it takes hold and you do a mini burn out.. runs awsome at hiway speed but you come to a turn and slow down or just pull off to stop and the rpm's might drop as far as 200 then bump to 1100 then settle in at about 500. sometimes the idle speed goes up and down a little or it might not . I sometimes hear a click sound like a relay or a solenoid. Is this TPS or what ..The code reader I borrowed gave me a "too rich bank 1" error....its a 4 cyl.

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  • sewayne1 Sep 07, 2009

    The problem was dry rot and split rubber vacuum line that went from the front of the throttle body to the "total manifold pressure sensor?" I replaced the line and this stopped the rough and varied idle. I cleared the codes and will check them later.

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Sounds like the hi idle relay is going bad or could be the wires going toit are at points grounding out look for the obvious and even ck with a test light removing the plastic housing to ensure this maby remove the relay and clean it should be opposite the two acceleration cables or above it but ck the vacuum lines as well for possible dry rot a place to start 1 st

Posted on Sep 06, 2009

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