Question about 1998 Jeep Grand Cherokee
An open or shorted condition detected in the transmission 2-4 shift solenoid circuit
did you leave out other DTC's and if yes, why?
you said no comm. so.......??????
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid valve
- Shift solenoid valve harness or connectors
- Shift solenoid valve circuit is open or shorted
so what is your question, the A/T is one of the most complex and finicky devices, ever created (puplic) and has 100s of parts.
what is the question.
1: want us to guess>?
2: want us to advice DIY , tests (100s of pages in FSM read it)
3: or? what shops are best?
I can tell you that the FSM covers all this and if really a DIY serious guy and all that,,, ready to buy tools , ready to do all tests.
then RTM, the FSM cover this , see sections on
ON CAR A/T service and Diagnosis.
but first clear the code with any scan tool and see if it comes back
also transmissions have limphome to, and they do skip gears.
one easy test, is the check the solenoid coil resistance.
infinity is bad.
its in the book.
do not fail to post all DTCs and not fail to drive 20 miles, agressivly
to see if the DTCs throw. use a scan tool to see ALL DTCS.
the CEL lamp is near useless. (its for smog)
Posted on Dec 30, 2013
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Posted on Jan 02, 2017
By 4th gear, you mean O/D? Did you change the converter? Also, check the brake light switch: the circut there disengages the od...if it's always open od won't work!
Posted on Jan 28, 2009
SOURCE: transmission wont shift
check the kickdown/throttle valve cable. It may be bound up and stuck in the maximum position giving you extremely late shifts.
There ISN"T any modulators or vac lines on any Chrysler automatics
Posted on Apr 03, 2009
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Two forward gears only
Gear missing or slipping
No upshift or slipping upshift
Non-First gear start
Refer to First Gear Range Only - No Upshift .
Refer to Third Gear Only .
Refer to Second/Third Gear Only or First/Fourth Gears Only .
Refer to Slips in First Gear .
Refer to Slipping or Harsh 1-2 Shift .
Refer to No 2-3 Shift or 2-3 Shift Slips, Rough or Hunting .
Refer to No 3-4 Shift, Slips or Rough 3-4 Shift .
Refer to No Part Throttle or Delayed Downshifts .
Refer to Second Gear Start .
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