Question about Jeep Grand Cherokee
2.7? diesel, the engine we dont have,, in USA.
so what up, ELABORATE please.
WJ JEEP is a USA jeep, in Europe its a WG, jeep, and runs different engines and trans,
yet another post with no country, like most here, and FAILED.
what does holds in low gear mean.?
try to know that engine power and a/t shift points are complex.
means, tell what works and not, pretend the helper is blind
and has no hands nor legs. bingo.?
now my wild guess, based off 2 words.
hold and lowgear.
i guess you are saying the engine runs perfectly with full power.
but the transmission will not auto up shift from 1st gear to 2nd,
is this correct?
my WG book, shows even Diesel shift'er module, is unique
and can not communicate, and fail.
and the TCM is controlling all this.
Learn to scan all modern cars first (means 96'+)
and save time, and money.
guessing will not work. sorry.
if you had scanned it and posted errors we could wax 10x more savvy, for sure.
in Europe they have EOBD, (simular to our OBD2, we invented)
so that is your tool, that works. (wild guessing country I am)
here is one example
P1242-CAN BUS MESSAGE MISSING FROM TCM
P27xx , are all trans errors, lots
this means the PCm can not talk to the TCM box.
if it cant, the the PCm can not send engine load data to it.
service manual, WG , chapter 21, covers all this.
Posted on Dec 30, 2016
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Posted on Jan 02, 2017
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