Just oils tipes and if sintetic is good or regular coz some people says the sintetic is to light and with the hot engine is like water or iam not sure please i need help thank you
Regular oil
SOURCE: 2001 JEEP GRAND CHEROKKE LAREDO
turn the key from the off position to the run position(not all the way to start) when the system makes one beep turn it back to off. repeat three times. this will reset the obd II computer. if you do this correctly the odometer will read some words like reset or something
SOURCE: Oil pressure drops to 0 in 2001 Jeep Grand Cherokee Laredo
Does it act different when this happens???? If not do not worry about it. It is just the Oil Pump slowing down with the Motor and will not hurt anything. My 600 HP 95' Silverado does the Same thing and it is not a Problem
SOURCE: 2004 Grand Cherokee: oil pressure fluctuates
if you know for certain that the sending unit is correct and the guage is accurate, then yiu may have big problems.....while the engine is running open the oil filler hole.. is everything wet with oil? or does it look dry or just a little lubed? you can allways install an aftermarket oil pressure guage(crappy tire) if you get the same results with that then you may have a week oil pump....worst case scenerio... need an engine rebuild as the moter may have wear issues.does the pressure slowly drop as the motor warms up? at idle ? does it jump up when you step on the gas?
SOURCE: 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!
SOURCE: 2003 Jeep Liberty. Changed oil, running very rough and dies.
Buy some Marvel Mystery oil from Auto Zone and add it to you engine oil. Keep an eye on your engine oil level everyday with the Marvel in there and change the engine oil every 3000 miles. Hope the Marvel will clean out the lifters for you and the rest of the sludge in the engine. Do Not Use Engine Flush!!!! There know to eat the seals and kill engine sensors.
The EGR could also be stuck with carbon build up and may need to be cleaned or replaced. Try doing this, turn your radio off and disconnect the battery for a min, turn the ignition key to the run position and re connect the battery then start the liberty. That should reset the air idle control valve.
Let it idle down and then go for a test drive after it warms up. Good luck and keep me posted, while your at Auto Zone have them scan your liberty for any DTC codes. Be glad to help.
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