2002 Jeep Liberty: misfire or rough idle

Filed Mar 19, 2019 · Engine · 128,000 miles · RI

Misfire in cylinder 3. Replaced coils, plugs, and computer. Still throwing the code.

Filed Jan 5, 2015 · Engine · 81,000 miles · IL

2002 jeep liberty - engine - cylinder misfires, overheating causing coolant to overflow, coolant got in cylinder?, new engine required - quoted $5,500 plus $120.00 per hour labor from jeep dealer.

Filed Apr 10, 2014 · Engine · 128,800 miles · NY

My car experienced a sporadic rough idle over a 2 week period. One day the check engine light when on after starting the car. After reading the codes cylinder 2 was determined to be the issue. A shop replaced the ignition coil and all seemed well. The next day after driving the car all day with no issue, I restarted the jeep after a 10 minute break and it would not start. When it finally started it sounded like half the cylinders were not firing and had a slapping sound. Towed it to dealership and was told cylinder 2 had no compression and it needed a new cylinder head. Both sides would cost $3,500. Parts were ordered and 10 days later they called me and said there were other problems and the cylinder head was not the issue. Piston seemed bent and it needed a long engine block and a water pump. This would cost $7,000. Not worth the fix. It seems cylinder 2 is an issue in many liberty's of this year.

Filed Jul 17, 2013 · Engine · CT

2002 jeep liberty. Consumer writes in regards to engine failure. *smd the consumer experienced a misfire while driving. The check engine light started flashing, so she immediately had the vehicle diagnosed with a diagnostic code reader at a local parts store. The code fired was misfire cylinder 2. The spark plugs and coil were replaced. However, the vehicle was still misfiring the same cylinder. The head was then taken off the engine to further inspect what was happening in the cylinder to case it to misfire. The mechanic discovered the exhaust valve was drawn into the cylinder and combusted. The combustion caused the piston to melt down to the first ring.

Filed Jun 7, 2013 · Engine · 139,000 miles · NJ

Tl* the contact owns 2002 jeep liberty. The contact stated the vehicle made a loud knocking sound and then it stalled. The vehicle was taken to a mechanic who determined there was a misfire coming from the pistons which caused the failure to occur. The contact was advised that the engine needed to be replaced. The failure and current mileage was 139,000.

Filed Oct 1, 2011 · Engine · 98,000 miles · PA

Cause: seat got loose got jammed in the valve and busted the piston, effect: engine chokes out. Wont idle. Misfires. Pulled no codes. I have found this and broken valve springs are an extremely common flaw in jeeps 2002-5. In 2006 chrysler changed the intake parts for it and never notified the public as to the reason. The replacement parts are listed as being able to be bought rebuilt or new, however you cannot find any rebuilt ones. Reason being you would have the same problem because its defective. This should have been recalled. No deaths=no recall -[xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed May 17, 2011 · Engine, Transmission · 81,000 miles · IL

Car overheated, check engine light came on and steam poured out from under the hood on the highway. Mechanic used a scan tool and determined that there was a cylinder 2 misfire. Coolant was found in the cylinder and maybe the head gasket needed to be replaced. When the head was removed the gasket was ok but it was determined that the engine (long block) needed to be replaced. I have found other owners online who have had this same issue with the 2002 and 2003 jeep liberty's. I am over the 7 year 70,000 mile powertrain warranty. Car was always maintained and regular oil changes were performed. No off-roading or towing done with this vehicle.

Filed Nov 20, 2008 · Engine · 69,000 miles · RI

Jeep liberty has problem with engine misfire resulting in a dangerous condition if you are driving. The engine will buck wildly. Have taken to dealer 5 times. Appears to fix problem, but returns without fail after a few thousand miles. I have seen many of the same complaints on various web sites (google "engine misfire jeep liberty 2002 3.7). Codes from car computer are p0354 and p0304 indicating failure in coil and engine misfire. Replace coil and spark plugs problem keeps returning. I have seen many others with same problem although the last digit of the odb codes could be different. I believe there is a serious defect in the manufacturing of the vehicle causing the problem. If you were in an accident avoidance situation, this problem could cause a crash and death.

Filed Aug 20, 2008 · Engine · 93,285 miles · MN

2 weeks ago we had an engine light come on and took it to a dealership to have it serviced. It came back after putting it on the analyzer that cylinder 6 had misfired so they just reset the light and said if it came back on to come in and they would replace the sparkplug. 2 weeks later the light came back on and the upper and lower seal blew. I was told by the service dept. That it would be 6 to 8 weeks to get the part and that we are number 60 on the list for the same parts. Is there a recall problem that we don't know about?

Filed Jul 26, 2005 · Fuel system · 60,000 miles · 00

Total engine shut down at highway speed of 50 miles per hour resulting in near loss of control. Due to failure of catalytic converter at 60,000 miles. The manufacturer has a 21 day back order on the part and advises only 14 pieces are available north america wide. No warnings, no engine lights, no rough idling. Chrysler customer service in canada showed little regard for the safety aspect of the part failure and appears to have a problem keeping up with demand for this part. As a police officer I dont want someone having an accident due to this failure with tragic results. We had just come off the main highway and if the failure had of occurred there a collision would surely have occurred.

Filed Oct 31, 2002 · Body, Brakes · 1,200 miles · MO

While driving, when the brakes are applied, the vehicle will experience extended stopping distance, almost causing accident(s). The dealership cannot locate problem, and is aware that the vehicle cannot be repaired properly. Ts the problems are as followed: rattling noise, lever on passenger side broken off the side pocket of the door, skidding, difficulty stopping on dry pavement/nose diving, engine symbol appearing on the instrument panel flashing/then the vehicle would start to shake, and misfiring with forward thrusting movements, as is if it were to shut down. The braking system was found faulty due to a missing brake combination valve which cause skidding, and the way the vehicle will stop. The front driver side wheel drags. The tires crumbled inside and had blown apart-firestone. Scc