tranny shifts 1st to 2nd way too late

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tonexj

NAXJA Forum User

Location

windsor, ca

• Sep 23, 2008

• #1

96' jeep grand cherokee 4.0L aw4 np242. it leaks out the tranny recently had a pan gasket/filter done at a shop. in drive itll stay in 1st until 3500 rpm before finally shifting to second then it goes to 3rd and o/d just fine. would this be some kind of computer thats messing up or internallly?

 

n1ywb

NAXJA Forum User

Location

The Green Mountains

• Sep 23, 2008

• #2

Could be either or I think. Check the tranny computer fuses, theres at least one in the fuse block, and at least one hidden behind the lower dash kick panel in the tranny comp wiring harness. Also check all the electrical connections on the tranny and the tranny comp.

Did this start right after the work was done? Did they flush the tranny or just drain the pan?

 

8

89xj

NAXJA Forum User

Location

aston,pa

• Sep 23, 2008

• #3

could it be a bad tps?

 

T

tonexj

NAXJA Forum User

Location

windsor, ca

• Sep 23, 2008

• #4

hey flushed the tranny n found metal shavings. it leaks a lot like i said and revs to 4000 to shift from 1st to 2nd, downshifts fine. ugh!

 

n1ywb

NAXJA Forum User

Location

The Green Mountains

• Sep 25, 2008

• #5

Sucks. I've never heard of anything good coming from a tranny flush. Drain and fill is the rule.

 

Muddy Beast

NAXJA Forum User

Location

WA

• Sep 25, 2008

• #6

Sounds like TPS from my experience (very little)...you might try replacing that? At the least, if it doesnt work you'll have a back-up...right?

~Scott

 

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PuddinHead

NAXJA Forum User

Location

Virginia

• Sep 26, 2008

• #7

Probably the tranny flush, other than the TPS itself it could be a bad electrical connection to the TPS. Probably the flush though

 

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lawsoncl

NAXJA Forum User

Location

North Idaho

• Sep 26, 2008

• #8

How much shavings? A little in the pan the first time it's changed is not unusual. The TPS is a common culprit for poor shifting as they do wear out (not terribly different than an old volume knob that wears out and gets scratchy).

Where is it leaking? From the pan or out the front of the bellhousing? It is tranny fluid and not engine oil right?