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My oil pressure guage drops when I come to a stop and my truck stalls out after

(1990 Dodge D250)
in Floresville, TX on April 26, 2017
When I start it sounds good I put a new oil pan new oil pump course oil change new spark plugs new distributor and rotor as well as a new fuel filter and fuel pump but for some reason when I come to a light or braking for a turn my oil pressure have drops and then the truck Will sputter until I can press the gas or most often dies leaving me to have to throw in neutral and restart this has a 5.9 360 with a 727 torqueflight transmission
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on April 26, 2017
Hello, i'm sorry for your troubles with the truck! The oil pressure gauge could be showing you an internal engine oil pressure issue, or it could be showing you that the engine speed is dropping so low that the oil pressure is becoming low as a result. I would suspect that this is the case; low oil pressure at base idle on this engine would not cause a stall. In any case, you are likely looking at a conventional "driveability" issue with engine performance. You referenced servicing the plugs, cap and rotor, fuel filter and pump, but you didn't mention anything about the air that comes into the engine. Sometimes, so much air gets into the engine without being checked that it can overwhelm the fuel and spark and cause the engine to want to stall. Check your air box with the air filter, the air tube to the throttle body, the idle control valve, and check for any vacuum leaks at the intake manifold. I suspect this is the source of your issue. I also suggest consulting the help of a local qualified technician - this link will show you some folks near you that can help. Good luck!
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on April 27, 2017
I do have a hole on the driver side of the exhaust manifold in the front there was a bolt above the hole but broken off so I welded a screw there to prevent and more exhaust pushed out and my truck was still acting up could be a vacuum leak
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