Oil pressure drop
Thread Starter
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Champion
Joined: Oct 2013
Posts: 3,771
Likes: 448
From: Atlanta
Well guys, looks like I'm in the clear. I installed the Mopar oil pressure sender this evening and also checked the pressure with a gauge. When I removed the old sender, I saw that it was leaking oil.
At idle, roughly 650-700 rpm, I was at 48 PSI (below 4 is low). At 3000 RPM, It was 90 PSI (I believe low is 25 psi). The 90 PSI is probably less than it should have been, because I was an idiot. I had the gauge's pressure hose too near the crank pulley and the drive belt burned right thru it. While I was in the truck gassing it to 3K RPM, oil was spewing out the hose and it was still reading 90 psi. What a holy mess I discovered. Had to go get some engine degreaser and wash down the engine.
Ah well, I'm happy it wasn't the alternative. The pressure needle is now steady just above halfway pt.
Thanks, all.
PS: The 4.7 oil pressure sender is just above the oil filter. I removed the filter and was able to extract it using a small pair of channel locks. None of my fixed wrenches fit, as it was too big.
At idle, roughly 650-700 rpm, I was at 48 PSI (below 4 is low). At 3000 RPM, It was 90 PSI (I believe low is 25 psi). The 90 PSI is probably less than it should have been, because I was an idiot. I had the gauge's pressure hose too near the crank pulley and the drive belt burned right thru it. While I was in the truck gassing it to 3K RPM, oil was spewing out the hose and it was still reading 90 psi. What a holy mess I discovered. Had to go get some engine degreaser and wash down the engine.
Ah well, I'm happy it wasn't the alternative. The pressure needle is now steady just above halfway pt.
Thanks, all.
PS: The 4.7 oil pressure sender is just above the oil filter. I removed the filter and was able to extract it using a small pair of channel locks. None of my fixed wrenches fit, as it was too big.
Last edited by Dodgevity; Jan 7, 2024 at 09:31 PM.
Thread Starter
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Champion
Joined: Oct 2013
Posts: 3,771
Likes: 448
From: Atlanta
So the CHRYSLER oil pressure switch I put in back in Jan, has failed. No, it's not the truck. It worked fine for 3 months, then started dropping to dead zero again, check gauges ding comes on, then it's back to halfway later in the drive. Sigh... even the dealer parts are questionable these days.
And when it rains it pours. I pulled up in the driveway earlier, closed the driver's window and "pow." The window glass falls into the door and disappears from view.
I better hurry up and sell this thing before I hit 350K, or someone might think it's got too many miles.
And when it rains it pours. I pulled up in the driveway earlier, closed the driver's window and "pow." The window glass falls into the door and disappears from view.
I better hurry up and sell this thing before I hit 350K, or someone might think it's got too many miles.
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Joined: Aug 2024
Posts: 2
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Sorry about Pedro own sue remark I'm just an entry level tech
Brake Pedal: The part of the braking system the driver interacts with to initiate braking.Brake Booster: Amplifies the force applied by the driver on the brake pedal to make braking easier.Master Cylinder: Converts the mechanical force from the brake pedal into hydraulic pressure.Brake Lines and Hoses: Carry the hydraulic fluid from the master cylinder to the brake calipers or wheel cylinders.Brake Calipers: Clamp the brake pads against the brake rotors to slow down or stop the vehicle.Brake Pads: Create friction with the brake rotors to slow down or stop the vehicle.Brake Rotors: Disc-shaped components that the brake pads clamp onto to create friction.Wheel Cylinders: Found in drum brakes, these apply pressure to the brake shoes to press them against the brake drum.Brake Shoes: In drum brakes, these create friction with the brake drum.Brake Drums: Cylindrical components that the brake shoes press against to create friction.Parking Brake: A separate system that keeps the vehicle stationary when parked.Sensors and SwitchesABS (Anti-lock Braking System) Sensors: Monitor the speed of each wheel and prevent the wheels from locking up during braking.Brake Light Switch: Activates the brake lights when the brake pedal is pressed to alert other drivers.Brake Fluid Level Sensor: Monitors the level of brake fluid in the master cylinder reservoir and alerts the driver if the fluid is low.Brake Pad Wear Sensors: Alert the driver when the brake pads need to be replaced.Brake Pressure Sensor: Measures the hydraulic pressure in the brake lines to help with ABS and stability control systems.Speed Sensors: Work with the ABS and stability control systems to monitor wheel speed.Electronic Stability Control (ESC) Sensors: Detects and helps prevent loss of traction and vehicle control.