Question about 2002 Jeep Liberty

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Knocking under acceleration

Jeep libery 2002 just tuned up

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Check if proper sparkplugs were installed, and if they were properly gapped!!

Posted on Jul 21, 2009


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How to put head gasket on 2002 jeep libery

the under statement of the century. wow.
why not read the FSM.
read it then ask questions, nobody is going to post this full 100 steps.
and no engine stated.

the 3.7magnum V6? here it is>

i guessed 1 of 8 liberties here.

Sep 29, 2014 | 2002 Jeep Liberty

1 Answer

Engine knock

caused by hot and lean.
which engine.??? at least 3 choices.
most have knock sensors. and will not knock.
if it really is knock then that is serious.
knock means detonation or ping.
if its just noise say that,
real PING happens under load.
1: check fuses.
2: check knock sensor for outside damage.
3: SCAN the PCM. do you have any DTC errors/
4: do a full 60k tune up. maybe its lean because the fuel filter is clogged.

Mar 23, 2014 | 2000 Jeep Grand Cherokee

1 Answer

Hi 2002 jeep Libery 3.7 auto. I have slightly over filled the gear box could this cause "low line pressure" to show or could it cause other problems or can I leave it ? Thanks

Slightly over is no problem. It won't cause any codes. Slightly would be 1/4 inch above full. two inches above full, you should drain it. I don't think this would pop a code, but it will throw the exccess out the vent. Making a mess

Sep 21, 2013 | 2002 Jeep Liberty

1 Answer

Starts but runs rough then cuts off

Problem with car is needs basic maintenance ;tune up,air filter,coils,fuel filter.

Mar 23, 2013 | 2002 Jeep Liberty

1 Answer

2002 jeep liberty 3.7 engine. Under the hood it sound like it's a knocking sound. and it has a vibrate with it when it's on.

is there any oil in the engine?

How about some more details,. what happened immediately prior to this?

Best regards

Aug 18, 2011 | 2002 Jeep Liberty

2 Answers

The blower motor stops blowing and I replaced the resistor. It's works for a few seconds then conks out. What's the diagnosis here? /2002 Jeep libery limited.

Pull the wiring connection to the Blower Motor itself and check for voltage. If the correct voltage is present, then the Blower Motor needs to be replaced.

Jan 05, 2010 | 2002 Jeep Liberty

1 Answer

Vibration while accelerating from 30 to 45 mph Jeep GrandCherokee

Not a tune up problem,
You need to have all U-joints checked out,They will give you the vibrations only while acceleration

Dec 04, 2009 | 2003 Jeep Grand Cherokee

1 Answer

I was driving onto an uphill on ramp and while accelerating the transmission downshifted and the rpm's shot up. I heard something breat, I emmidiately let off the acceleraater when i heard something pop. I...

It could very well be a valve or lifter. The low oil may also cause the lifters or rods to knock.
As long as you aren't loosing oil or coolant, jeep runs good, and the knocking is not extreme, than add oil and you should be ok.

Aug 17, 2009 | 2002 Jeep Liberty

1 Answer

2002 jeep wrangler oil pressure gauge drops

When the gauge is at 0, is there any noise from the engine (tick, knock etc?) I would have someone put a mechanical gauge on there and read true pressure.Your driving pressure seems OK but if the low number is "real" something is wrong!

May 30, 2009 | 2002 Jeep Wrangler

1 Answer

2002 jeep liberty 3.7 engine where is knock sensor located and can the knock sensor cause it not to start.

get the pcm computer checked first for errors.
The 2 knock sensors are bolted into the cylinder block under the intake manifold. The sensors are used only with the 3.7L engine.

what are your sysptoms of no start?

Mar 10, 2009 | 2002 Jeep Liberty

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