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09-29-2007, 09:44 PM
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#1 | |
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AF Newbie
Join Date: Sep 2007
Location: Parker, Arizona
Posts: 7
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Shifting automatic transmission
My '89 Geo Tracker has fuel injection and automatic transmission. When I start the engine I am tacking 2000-2200 rpms. It takes three to four minutes for the engine to slow down to under 1000 rpms.
What would be a safe rpm to shift my automatic transmission into gear? Any suggestions, or what works for you? |
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10-02-2007, 12:25 PM
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#2 | |
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AF Regular
 Join Date: Jun 2005
Location: Heber City, Utah
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Re: Shifting automatic transmission
I think you will find, if you watch, that during normal driving your AT will shift to the next gear at about 3500, or higher, rpm. Small 4 cylinder engines tend to develop most of their power in the upper rpm ranges (that's why your tach redlines above 6000) and the AT's are programmed accordingly. Go ahead and drive it.
The initial 2000 rpm at start up is normal (or perhaps a little fast) high idle mode, used to warm the engine to operating temperature, and to prevent stalling during the first few minutes of driving. Believe me, driving a vehicle with the high idle set too low, or one with a defective auto choke can be very frustrating.
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The Family Stable: '80 Ford Bronco (need to sell) '96 Ford Bronco (Let's go Scouting) '91 Chev S-10 Blazer (need to sell) '92 Geo Tracker (Oldest Son) '98 Ford Windstar (Daughter's) '98 Chev Lumina (Wife) '03 Chev Malibu (Oldest Son) '07 Toyota Corolla (Daily Commuter) '54 MG TF 1500 (Long term project) |
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