04/04 6.0 long crank to start, no oil pressure when idle
Hi, guys. I am facing a problem with the my truck right now. I just got my truck back from my mechanic and he claimed he replaced the HPOP, FICM and went through the front of the the engine after I sent it in for a non start situation. When I picked it up I had to crank for 10-15 secs for it to finally start. He stated it was just air in the system and I had to drive it for awhile to bleed out the system. I left the shop and 5 mins later the "check gauge" light came on and oil pressure gauge went to 0. If I gave it gas (even just at little bit) it would come back to normal and stayed normal until I let go of the gas paddle. I called the mechanic and he said it could be just oil pressure sensor that is located next to the oil filter housing. I have driven for 150 miles since I got it back but the problems stayed the same.
I have researched the similar problem but most of the them are for hard start/long crank OR no pressure when idle. In my case, both of the issues exist at the same time.What should I do?
BTW. The repair cost me 2400 dollars and he used Baldwn oil filter and cap later I found out and changed back to MC oil filter and cap, still did not solve the problem, though.