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Car Forum / Oldsmobile Cars / August 200499 Alero loses power, stutters, speedometer reads 140mph? uhh
My 99 Alero does this maybe once in a given month. Minutes after a cold start, I'll be driving along just fine, and then stop at a stop sign. I'll then accelerate at a firm rate, the power stutters, convulses, up down up down at a steady rate, until I let off the gas, while the speedometer runs up to 140mph and then goes back down. It runs like a dream otherwise. No knocking or anything. Everything sounds fine. -Max 99 Alero Do you have a sunroof? If so, pull the side covers off the ends of the dash. Look at the fuse boxes and maybe even pull a fuse or two for inspection. You're looking for evidence of water damage. If you see white trails or corrosion, you'll need to replace the damaged fuse boxes and your sunroof glass. No sunroof. No corrosion in the fuse box, but water does come in sometimes when I need to open the window at drive-thrus in the rain, etc. The Viper alarm system was installed by Best Buy, and U-Haul added a hitch light connection. Both tap into the break light wires (driver side floor board, and rear). I'll check those connections, and look at the grounds... actually the Viper makes a funny squeak instead of a chirp sometimes, so maybe something going on there. No check engine light, so I'm assuming it's purely electrical, and not the engine and transmission. Check engine light should come up for any misfire or anything like that. -Max > Do you have a sunroof? If so, pull the side covers off the ends of the > dash. Look at the fuse boxes and maybe even pull a fuse or two for > inspection. You're looking for evidence of water damage. If you see > white trails or corrosion, you'll need to replace the damaged fuse boxes > and your sunroof glass. I wonder if maybe you have an ignition switch problem and the cluster is going through it's self test. Many times the BCM will store codes for this, but you will probably need to go to the dealer to find out. I don't know if there are any generic scanners which read b-codes. You could try going to Auto Zone or something and having the PCM codes read to see if there's anything related. I believe there can be a passlock code which stores in the PCM.
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