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Chris
Chris, Shop Foreman
Category: Jeep
Satisfied Customers: 3163
Experience:  Jeep Certified Master Tech
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My 03 Jeep Liberty 3.7 engine, transmission changes out well

Customer Question

My 03 Jeep Liberty 3.7 engine, transmission changes out well when first cranked or after it sits for awhile. After it warms up it drop into low and will not change, not from a stop or manually.
Submitted: 1 year ago.
Category: Jeep
Expert:  Brad replied 1 year ago.

Good morning and welcome to JustAnswer!!

The very first step in repairing this issue will be to see what codes are in the TCM(Transmissison Control Module), then run the diagnostics for the codes...

Can you read them and post them here?

Customer: replied 1 year ago.
How do i do that
Customer: replied 1 year ago.
the check engine light is not on
Expert:  Brad replied 1 year ago.

You will need a scantool to connect to the plug in under the dash and read the codes...

Customer: replied 1 year ago.
Ill take it to advance auto
Expert:  Brad replied 1 year ago.

Ok thanks.. Post the codes here when you get them.

Customer: replied 1 year ago.
I have the code they are po700. po218,po325 andp1281
Customer: replied 1 year ago.
Did you get the codes
Customer: replied 1 year ago.
PO700, PO218, PO325 and p1281
Customer: replied 1 year ago.
I sent them earlier and last night
Customer: replied 1 year ago.
Is anyone working on my questioni
Expert:  HDGENE replied 1 year ago.

hello, Let me see if I can be of some help. Is the transmission fluid level full and look ok or is it low or look black or smell burnt?

Customer: replied 1 year ago.
the transmission fluid level is good and looks and smell ok
Expert:  HDGENE replied 1 year ago.

ok so it has its normal gears until it gets hot then it acts like it is in a lower gear range/ Does it still have reverse?

Expert:  Reggie Whiddon replied 1 year ago.

Ah the 42rle, if your fluid level is clean and at spec, with no overheating issues, I would check all fuses, Power wires and charging voltage if okay I would replace the TCM clear codes and do a relearn. But this want help with the crank sensor and thermostat codes replace the crank sensor and thermostat clear codes and retest.

Customer: replied 1 year ago.
I drove it and rechecked the fluid and it was low and it hasn't did it again
Expert:  Reggie Whiddon replied 1 year ago.

Awesome

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