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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.
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.
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
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.
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.
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!
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