Oil pressure problems

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Oil pressure drop down

Chevrolet Blazer 2005  110000 miles
When the engine's temperature is around 100, which is its normal range, and the car is stopped, the engine's pressure drops down. I might be driving for miles without any problems but, when I stop, it drops. I've changed the filter, oil and even gave it Flush.
XINA from United States 9 years ago  
XI
1 report 
DEIDRE from United States 9 years ago
It might be that the acceleration is low and that is why it tends to stall. It might as well be the oil sensor or more probably the oil pump.
cage from United States 9 years ago
The same happened to my Blazer 98 and what I did was to move the acceleration, approximately 1/4 of a turn in the throttle body and the problem was solved.
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Fuel pump and oil pressure gage

Chevrolet Blazer 1988 Chevy s10 blazer 2.8 4x4 2304521 miles
I bought a new fuel pump and a fuel pump relay, no power to the fuel pump. The oil pressure gage does not work the old fuel pump quit working so I took it out ,and behold the screen was falling apart, the tank was full of rust. Problem no power to the new fuel pump
Logun from United States 7 years ago  
LO
7 reports 

Parasitic draw from battery

Chevrolet Blazer 1999 Lt 200000 miles
It starts and runs from a few seconds to a minute then stalls the idler pulley is bad and makes us think it’s causing the alternator to not charge properly. It also sat for a good while before my cousin got it so I’m thinking the fuel pump isn’t putting out the right psi. It also starts to struggle when it’s in any drive gear. We’ve taken the starter off and cleaned it thoroughly, replaced alternator and battery and it ran good for a while it’s got engine noise I’m guessing could be a spun bearing because he’s ran out of coolant twice and his oil pressure drops at the same time. Could mainly use help narrowing it down.
1999 blazer from United States a year ago  
19
1 reply 
Bruce from United States a year ago
There are several potential issues that could be causing the problems you've described with your Chevrolet Blazer. Here are a few possibilities:

Fuel pump: If the fuel pump isn't putting out the right pressure, it could cause the engine to run poorly or stall.
Idler pulley: If the idler pulley is faulty, it could cause issues with the alternator and result in a parasitic draw on the battery.
Spun bearing: If there is a problem with a bearing in the engine, it could cause noise and potentially cause the engine to run poorly or stall.
Alternator: If the alternator is not charging the battery properly, it could cause a parasitic draw on the battery and result in the vehicle stalling.
Battery: If the battery is not holding a charge, it could cause the vehicle to start and run poorly or stall.
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