Do I have to just remove the oil fliter, oil pan to replace the oil pump or do I have to locate the pump inside the engine and or take the engine apart
pump isb behind the timing belt cover and is on the timing mechanism. all this has to be removed to change the pump.
here is the engine diagram, that could be your problem. oil flush can sometimes fix this. and do a few oil changes with cheap oil and filters until it is clear.
SOURCE: 2002 Chevy Avalanche Oil Pump
oil pump is on front of engine you ewill need to pull crank pulley and fan shroud.
SOURCE: transmission filter location
should be large flat metal piece with 2 bolt facing down.
try asking to see one at the auto parts store
SOURCE: I keep losing oil pressure in my 2004 f150 with a
Ok 3 questions to answer:
1 yes the pump could be bad, but it is not likely.
2 yes it is in the oil pan.
3 yes you can change it without pulling the engine, though it is not easy.
Most common problem for your oil pressure reading to be going away, is the oil pressure sending unit(sensor) it is located next to the oil filter, check and replace if neccessary this sensor first and see if your oil pressure returns to normal. If not then you may have a pump problem. Hope this helps, let me know.
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