08 tahoe 5.3 low oil pressure after filter & pump change - Chevrolet Forum - Chevy Enthusiasts Forums
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08 tahoe 5.3 low oil pressure after filter & pump change


svancdevecht's Avatar
Newly Registered

Join Date: Oct 2017
Posts: 1

October 11th, 2017, 3:07 AM   #1  
08 tahoe 5.3 low oil pressure after filter & pump change

hi,

I had the issue with the drop in oil pressure when engine is warm.

replaced the pressure filter (which looked clean when replacing)

still problem existed.

now we have changed the complete oil pump and it still has the same issue.

if all the above did not help.. what else could it cause??

I had some issues with AFM failure in past and it has been disabled in the computer.

 
tech2's Avatar
CF Monarch

Join Date: Mar 2011
Posts: 5,232

October 11th, 2017, 8:29 AM   #2  
excessive bearing clearance from a worn engine is one possibility. only way your going to confirm this is to tear down and take measurements. cheap fix is to run a heavier weight oil.

 
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