Quote:
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Originally Posted by Uncle Rico
2000 Isuzu Rodeo V6...
It's just when it hits about 20-22 miles per hour (which I think is the normal shift point), it doesn't shift gears. It just revs.
...It just won't shift at up at the designated shift point. ...
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to add to the database:
***is your
Check Trans Light on? or has it turned on and then gone off?
***so it doesn't
upshift at all ?
***does using the
Power Mode change anything ? (it changes the shift points)
***have you tried, even,
Winter Mode? what happens? (it starts you off in 3rd)
***can you
shift 'manually' ?
***have you actually had your
alternator tested for amp output under load?
and most important as a first step:
***have you
checked your AutomaticTransmissionFluid -- is there enough?
and what is its condition: color, odor?
the answers you are going to get depending on
your answers:
1. check your trans fluid
2. check your
alternator output. the 4L30E trans computer-controlled operation is
very sensitive to even neglible output drop and operates correctly only within a
very narrow range. and causes numerous operational problems, even though the engine appears to be running fine.
3. check your automatic transmission gear selector
Mode Switch.
4. your
trans is fried and you need another one (but that kind of answer is
way too early in the diagnostic/decision tree right now).
from what you have said, and not said, i'd say (guess) that the severe slipping is caused by low ATF level...next i'd rule out the alternator by getting tested...then i'd be looking at the mode switch...and then (well, you don't want to hear that).
btw, you were asked: what model, what year, what mileage ?!
it helps in the diagnosis...
hth
//bc