I took my car to the shop to have a window regulator replaced, and while they were there I had them replace my oil pan... unrelated issues obviously. My old oil pan had a stripped drain plug, and the previous owner drilled out a new hole, tapped it, and put a new plug in. When I bought the car, I drained some oil and checked for shavings. I didn't find any and hoped that it wouldn't cause problems. that was 3 1/2 years ago, and things have been fine. I got it back from the shop, and was driving it that night. When getting onto I-15, it didn't wanna downshift until I let up on the pedal. Then when I got home, the oil pressure was low and inconsistant. The idle matched the flicker of the oil pressure, and then it stalled. I popped the hood, and it smelled hot; but, that could've been the 5 mile freeway drive, and residual overspill from replacing the pan. I thought that it might just be the fuel filter being that it's been a while since I replaced it. I parked it for a few days then started driving again with the intention to run some fuel injection cleaner through it before I change that filter. I drove it to work today, and driving 10 minutes to lunch and back, it developed a tick. I had to drive double footed, and keep the rpms at about 1500 so that it wouldn't stall out. I'm wondering, with a new oil pan, and no problems before, what could've gone wrong here? Is there a chance that the shop filled it with the wrong viscosity oil? Would that keep it from reaching the top end of the motor and give me my tick? Where should I go from here. I'm hesitant to return to the shop being that they charged $600 to replace the pan.
