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at rpm shift points

Old Aug 11, 2008 | 07:19 PM
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at rpm shift points

unless i shift manually it doesn't matter if i have the od on or off, it shifts around 6k rpms. i thought it was supposed to go to about 6400 and then shift.
^all at wot without letting off the gas.
Old Aug 11, 2008 | 08:04 PM
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lol what is the question here?
Old Aug 11, 2008 | 08:14 PM
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well, idk i'm just wondering if it's normal because i'd like it to hit close to redline without having to shift manualy.
Old Aug 11, 2008 | 09:09 PM
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Most automatics short shift. It is normal I wouldn't worry about it. The intake manifold and y pipe on stock US 4th gens chokes the engine's power so much in the upper RPM range anyway you aren't really loosing anything by it shifting early at 6K.
Old Aug 12, 2008 | 08:49 PM
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With the 4AT gear/FD ratio, with a 215/60/15, that's a WOT:
  • 1->2: 6000
  • 2->3: 5900
  • 3->4: 5800

At the top end of those ranges above.

At the low end, it's:
  • 1->2: 5300
  • 2->3: 5500
  • 3->4: 5500

Approximately.
Old Aug 12, 2008 | 11:21 PM
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sweet, thx pmohr. is it going to change some with a different wheel size? i run 245/45/17 and never thought that could affect wot shifting.
Old Aug 13, 2008 | 10:17 AM
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Originally Posted by allensteiner21
sweet, thx pmohr. is it going to change some with a different wheel size? i run 245/45/17 and never thought that could affect wot shifting.
tire size affect your speed. the tranny shifts at what it thinks is the right speed to shift at. if you had (theoretically) 1" tires on your car, you would reach "top speed" at a REAL speed of about 5mph lol
Old Aug 13, 2008 | 01:05 PM
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Wow! That is awesome, did you find that in the FSM pmohr?

Just curious, what is the difference between "comfort" and "auto power?"


Also, this is somewhat related, but I heard a rumor somewhere that the 97-99 automatic has slightly different programming and will kick down more aggressively into first gear than the 95-96, does anyone know if that is true?

I know the 97-99 at least does have quite the agressive kick down. My friend has a 97 automatic, and even if hes going over 35mph, it will slam into first gear if he floors it, unlike most automatics that wont kick down over 30.
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