Shifting rpm question.. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-14-2003, 05:04 PM   #1
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Default Shifting rpm question..

Im not sure if this is normal or what so Ill ask anyways. Uhmm when i slam the gas my gar in first goes to 5k rpm and when I am driving normal it shifts around 2k-3k. Is this normal or do I have a problem on my hands yet again with something else
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Old 05-14-2003, 05:10 PM   #2
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Sounds to me like when you slam or floor the pedal and getting to 5000...wait 5000?!??!!?!? whoa...is this only from a standstill or rolling?

You're not giving the car a chance to change gears...but 2000 - 3000 RPM at normal or even aggressive driving is normal

Don't kill your tranny
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Old 05-14-2003, 05:33 PM   #3
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stand still
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Old 05-14-2003, 05:35 PM   #4
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I bet dollars to donuts that everything is fine...its just a bad case of lead foot. Everything sounds OK. If it was my car, I wouldn't do it to often, you may be asking for trouble over the long term
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Old 05-14-2003, 06:01 PM   #5
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Well I only do it to race thats why I was asking its not like I do it every time im at a light
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Old 05-14-2003, 07:03 PM   #6
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That'* fine.. on my SSEI.. in performance mode.. it won't shift till 5500RPM on WOT.. and shifting at 3000 rpm at least in first gear all the time ( but I think mine has learned the way I drive ) cause I tend to want to get up to speed quickly.. then cruise.. so it allows my car to pick up more rpm till I get to normal speed.
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Old 05-14-2003, 09:41 PM   #7
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5000rpm is ok for max hold down in first ......wait 5000?? oh yeah forgot mine shifts at 6500 wot with limiter set at 7000
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Old 05-15-2003, 02:35 AM   #8
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Quote:
Originally Posted by russianpolarbear
Well I only do it to race thats why I was asking its not like I do it every time im at a light
Guess I should stop doing this at every light then?
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Old 05-15-2003, 04:47 AM   #9
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Everything is cool. Your PCM is looking at several things when deciding to shift. One of those things is the TPS. It wants to know how hard you're mashing the throttle. If you mash hard, it sees the TPS change voltage very quickly, and moves the shifts higher to make use of the whole power band. If it sees a light throttle change, it shifts lower for fuel economy.

Smart car, eh?
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