2.2L Performance Tech 16 valve 143 hp EcoTec with 150 lb-ft of torque

Tach/Speedo jump???

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Old 04-21-2006, 07:11 AM
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Tach/Speedo jump???

Anyone ever notice their tach and speedo jump right after turning off the car? I've got a 2LT MTX... usually park in the following fashion- stop ( ), set parking brake, put vehicle in 1st, turn key off.
I haven't noticed if this happens 100% of the time, but it catches my eye more often than not. Seeing that there may be more MTX's in the 2.2 forum, I've decided to post here as well as the 2.4 forum.
Just curious if this is the "norm"?

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Old 04-21-2006, 07:24 AM
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Two threads are confusing.
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Old 04-21-2006, 07:32 AM
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i have noticed that when you turn the key to acc, listen to radio and then to off, the needles go up and then down a little,,, no bigggie
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Old 04-21-2006, 08:42 AM
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Thanks CJ... was hoping it wasn't just my car...
CPT'n... I posted in the 2.4 forum 1st then realized (duhhhh) - this relates to ALL HHRs .
O-well.
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Old 04-21-2006, 10:17 AM
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I had that happen to me too. I took it to the dealer just in case, and they said they had multiple people come in for the same issue, but it was nothing to be concerned about, and that it was not effecting anything.
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Old 04-22-2006, 07:53 AM
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Lots of newer cars with computer controlled tachs and speedos do this. It's very common.
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