Question about Cars & Trucks
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Posted on Jan 02, 2017
the oil pressure switch is on pssenger side, lower engine area,beside oil filter, mounted in engine block. The pressure relief valve is in the oil pump, in which case, you have to drop the oil pan,and take off the oil pump.
Posted on Jan 31, 2009
I have a 93 f150 my ac bulds up to much pressir and pops off the relefe valve ive replaced every thing any sugestions?
Posted on Sep 07, 2009
The oil pressure relief valve should be on the oil pump.If your oil pressure is ok,have the wiring tested to theswitches or try another set of clocks
Posted on Sep 16, 2009
Check the fuse to the fuel pump.
The issue is repeated blowing of the fuel pump fuse. This occurs randomly and without warning, normally when medium to high throttle is applied. Generally the RPM's will fluctuate briefly before the fuse blows, which cuts off ALL power to the vehicle.
Especially dangerous on a highway! The first mechanic found a TSB related to the fuel pump resistor, and its default location in the wheel well can cause premature corrosion. Replaced it and relocated as per the TSB.
You can bypass the resistor, it's simple and free. You bend pin 85 on the fuel pump relay #15, in your engine bay fuse and relay box. Good luck and keep me posted, at worst ti's going to be a bad fuel pump and your going to have to drop the gas tank to replace the fuel pump. When you bend the #85 pin from the relay, will set the fuel pump on high mode bypassing the resistor.
Posted on Dec 22, 2009
SOURCE: I am changing the
Please don't forget to rate! Thanks! Locate the fuel pump relay in the engine compartment fuse block at location K4/C-1051. Remove the fuel pump relay. Start the engine and allow it to idle until it stalls. Crank the engine for 5 seconds to ensure fuel supply manifold pressure is released. When vehicle service is complete, reinstall the fuel pump relay and turn the ignition on to pressurize the fuel system. Start the vehicle and check the system for leaks.
Relieving Fuel System Pressure
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Locate the fuel pump relay in the engine compartment fuse block at location K4/C-1051. Remove the fuel pump relay. Start the engine and allow it to idle until it stalls. Crank the engine for 5 seconds to ensure fuel supply manifold pressure is released. When vehicle service is complete, reinstall the fuel pump relay and turn the ignition on to pressurize the fuel system. Start the vehicle and check the system for leaks.
Posted on Jul 08, 2011
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