automatic shift points
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Senior Member
Joined: Nov 2005
Posts: 390
From: CHARLOTTE,NC.
ok here is the issue i have a 90 vert automatic 123k strong motor .
the transmission is not shifting gears when i drive it at low rpms , it does when i floor it
the oil is clean dont smell burn , anybody had this problem before?
im thinking maybe a tps problem or is there an ecu for the trans ?>
the transmission is not shifting gears when i drive it at low rpms , it does when i floor it
the oil is clean dont smell burn , anybody had this problem before?
im thinking maybe a tps problem or is there an ecu for the trans ?>
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Joined: Apr 2002
Posts: 2,535
From: VA
Originally Posted by 1979rx7' post='913422' date='Dec 17 2008, 10:09 AM
ok here is the issue i have a 90 vert automatic 123k strong motor .
the transmission is not shifting gears when i drive it at low rpms , it does when i floor it
the oil is clean dont smell burn , anybody had this problem before?
im thinking maybe a tps problem or is there an ecu for the trans ?>
the transmission is not shifting gears when i drive it at low rpms , it does when i floor it
the oil is clean dont smell burn , anybody had this problem before?
im thinking maybe a tps problem or is there an ecu for the trans ?>
Not shifting? or getting into top gear so soon that you're not aware of it shifting?
Thread Starter
Senior Member
Joined: Nov 2005
Posts: 390
From: CHARLOTTE,NC.
Originally Posted by 1988RedT2' post='913427' date='Dec 17 2008, 11:46 AM
Not shifting? or getting into top gear so soon that you're not aware of it shifting?
not shifting it stays in low gear past 6krpms .
Thread Starter
Senior Member
Joined: Nov 2005
Posts: 390
From: CHARLOTTE,NC.
Originally Posted by 1988RedT2' post='913430' date='Dec 17 2008, 12:36 PM
And if you floor it, it shifts? That's kinda weird. Fluid level correct?
yes it shift hard when i floor it , are this trans electronic? i had a problem like that with a pathfinder the tps fix it so i wonder if it has something to do with it
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Joined: Apr 2002
Posts: 2,535
From: VA
Originally Posted by 1979rx7' post='913431' date='Dec 17 2008, 12:54 PM
yes it shift hard when i floor it , are this trans electronic? i had a problem like that with a pathfinder the tps fix it so i wonder if it has something to do with it
Not sure, but I don't think it's electronic.
According to my manual, for no 1-2 shift:
Check Range selector linkage, Vacuum diaphragm and piping, Kickdown solenoid, switch and wiring, and some other stuff in decreasing order of probability.
For excessively high 1-2, 2-3, and 3-4 shift points:
Check ATF level and condition, same stuff as above, and fluid pressure (line and governor).
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