maxima transmission shift issues...

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1991q45
Posts: 145
Joined: Sun Feb 22, 2009 6:21 pm
Car: 1991 infiniti q45

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well i don't know if it's an issue but it did'nt start till yesterday.

it's a 92 maxima gxe auto. she just rolled over on 167k miles.

okay 1st-2nd shifts are delayed.no slipping.no flaring up then shift.

it's just delayed.

3500rpms and under no delay.wot no delay.the shifts are firm not to firm though.2nd-3rd no delay same for 3rd-4th.reverse is fine.

another issue is kickdown when your in 2nd or when she shifts 1st-2nd then u floor it it takes a second or two to realize to down shift.

i do happen to have a 4.7k ohm resistor in place of the line pressure resistor.(it's there for the firm shifts and quick kickdown response).

now here's where it gets intresting:when you remove the resistor not only are the shifts neck breaking hard they're quick and so are the down shifts.

i changed the transmission fluid about 25k miles ago (i know it's time to change it again).

can anyone here PLEASE shed some light on this?

thanks in advance!


1991q45
Posts: 145
Joined: Sun Feb 22, 2009 6:21 pm
Car: 1991 infiniti q45

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anyone? please?

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MinisterofDOOM
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Car: 1962 Corvair Monza
1961 Corvair Lakewood
1974 Unimog 404
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Location: The middle of nowhere.

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Sounds like a throttle position sensor issue.

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gumbyp10
Posts: 8
Joined: Tue May 05, 2009 4:34 pm
Car: black 96 maxima white 96 G20

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with an older auto transmission it could be anything from a sensor to transmission fluid, if you havent replaced your fluid in a while id start there, then id get an ecu check, just because the lights not on doesnt mean it wont show up on a diagnostic.

1991q45
Posts: 145
Joined: Sun Feb 22, 2009 6:21 pm
Car: 1991 infiniti q45

Post

first off guys...thanksi changed out the fluid bout 25,000 miles ago.i guess i can change em again.

also i would like to note that i do have an external transmission cooler.


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