Question about 2003 Jeep Grand Cherokee

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2003 Jeep stalls at highway speeds?

Running between 70 and 80 mph. the engine seems to stall until I come to a completestop the I can drive it through town. I have no engine light and already replaced the fuel filter

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You didn't replace the PUMP!!! but you were on the right track (-:

there is a high pressure pump in the tank with a strainer sock, also replace the VC (vacuum canister) while doing all that work, it is near the tank at the left rear of the vehicle and replace ANY hose that looks slightly suspect! This IS a lot of COSTLY work.

good luck

Posted on Dec 07, 2008

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1 Answer

Stalls while driving


Can you be more specific does it happen only on the highway what is the speed is it when accelerating does it happen on other roads, does it start right up after stalling as it seems unlikely that it would just be the highway in order to even try and figure it out more information is required

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oil cap , that is moisture, all cars do that driven short distances.
due to never reaching full temperature to drive out that moisture.
(or the PCV valve is clogged, ) there if which causes stalls.
its a stall plain and simplle.
engine that stall, go to to zero RPM
engines that stall , most warning lamps turn tune on ,just like it does key on first thing in the morning. its called lamp self test
and is covered in the operators, guide, its ok this must be your first stall ever.
Get a new PCV, and get fresh oil into the engine yours is too old.
Also get a full tuneup, ever do one this DECADE?
stalls have over 50 caused,do you want my wall of text on that
bet not,,, but is true,

Get the car fixed, serviced, or a full tuneup,
spark parts, filters, oil, like what we all do.. to keep it running like new,. and last longer.
the PCV valve is also a standard tune up part, if found to be
1; clogged, 2, not rattling when shook. (its just a check valve)
also that valve clogged can cause oil leaks due to excessive
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here are some causes of stalls.
ask us blind folks why your car stalls is really impossible.
but seem everyone does, endlessly.

stalls are cause by gross MISFIRE.
(or loss of 12vdc battery power, but that is not your case)

here they are, and the wall of text page is there for fun.
good luck finding it , texting here, endlessly....
http://jeepdied.com/Misfire101.html

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1 Answer

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More info wanted,as first is it a Man/or Auto ,what engine have you got 6 or v8??? When last servised by who,How many miles on the clock,dose it smoke when driving or starting ,are the revs ok on idle ,,about what temp dose it run at the 30/60 mph etc etc???
PLEASE send all info, ..
Ron.

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PLEASE don't forget to RATE ME (FIXYA) for my help..........

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