Question about Lincoln Continental

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Low fuel rail pressure, warning light on dash on! (so i have been told!) any ideas what could be wrong and where to find the fuel rail?

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  • jasonphelps2 Apr 17, 2009

    thanks for the that! will mention it!

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The fuel rail is on top of the engine. look for the injectors the rail is the metal fuel line that supplys fuel to all the injectors. you can also find a fitting on this rail that a pressure gauge can be screwed onto. it should have a black cap on it. kinda looks like a valve stem like for the tires. but you may have a faulty pressure regulator. a clogged fuel filter or a bad fuel pump. replace pump last. it will be more expensive.

Posted on Apr 17, 2009

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Posted on Jan 02, 2017

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I ran out of gas and while waiting for help, I had my hazard lights on which killed the battery. I put gas in and jumped the car (kept the jumpers connected til the battery voltage got up to 13.4) but it...


Running out of gas is a real pain,but your pump would not fail because of this only. If you often run the tank low on fuel it will cause premature pump failure because the fuel cools the fuel pump! I suggest you check to see if you have fuel pressure at the fuel rail. If you have fuel pressure(20 to 40 psi) then check fuel volume,(about 1 pint in 30 seconds) If you have pressure but no volume your filter is most likely resricted. One easy way to check the pump is to have someone turn the ingition switch from off to run, with the fuel door open put your ear to the filler inlet and listen for the pump to run. it should run for about 3 seconds If you dont hear the pump running check the fuse and relay for the pump.If it is running replace your fuel filter(much cheaper than a pump and wont hurt to replace anyway). Hope this helps Bill

Dec 04, 2014 | Cars & Trucks

1 Answer

Diagnostic code p0193


P0193 FORD - Fuel Rail Pressure Sensor Circuit High Input
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Engine will not start Possible causes - Excessive resistance in the circuit
- Low or no fuel
- Wiring harness connector of the fuel pressure sensor
- Fuel Rail Pressure Sensor
- Fuel Pump

Mar 17, 2012 | 2004 Ford Explorer Sport Trac

1 Answer

Code p0190 what is it


There is not a cut and dry one answer fixes it for this code, it has to do withthe fuel supply manifold pressure sensor not reading correctly. Here is the diagnostic info.
P0190 FORD - Fuel Rail Pressure Sensor A Circuit out of range
Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
- Engine will not start Possible causes - High fuel pressure
- Low fuel pressure
- Damaged FRP sensor (most common)
- Excessive resistance in the circuit
- Low or no fuel
- Wiring harness connector of the fuel pressure sensor
- Fuel Rail Pressure Sensor
- Vacuum leaks
- Fuel leaking causing loss of pressure

Jan 27, 2012 | 2004 Ford F150

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2004 Santa fe 3.5 L -- 2 questions -- My son's Hyundai has an intermittent starting problem. It was time for a timing belt replacement so decided our local mechanic would take care of both at the same...


Also while he was looking apparently he must have loosened the ground leading to the fuel sending unit, it now reads Empty with the Low Fuel Warning light on. Impossible ! Did he have the gas tank out ? Or the instrument cluster ?

Does the vehicle has a automatic transmission ? When it won't start try putting into neutral . park neutral safety switch ?

Apr 15, 2017 | 2004 Hyundai Santa Fe

1 Answer

P0193 - P1188


P0193 - Fuel Rail Pressure Sensor Circuit High Input
The Fuel Rail Pressure (FRP) sensor is a diaphragm strain gauge device in which resistance changes with pressure. The electrical resistance of a strain gauge increases as pressure increases, and the resistance decreases as the pressure decreases. The varying resistance affects the voltage drop across the sensor terminals and provides electrical signal to the Powertrain Control Module (PCM) corresponding to pressure.

Strain gauge type sensors are consider passive sensors. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow.

Voltage that is dropped across a fixed resistor in series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.

The FRP sensor measures the pressure of the fuel near the fuel injectors. This signal is used by the PCM to adjust the fuel injector pulse width and meter fuel to each combustion cylinder.

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine will not start

Possible causes
- Excessive resistance in the circuit
- Low or no fuel
- Wiring harness connector of the fuel pressure sensor
- Fuel Rail Pressure Sensor
- Fuel Pump



P1188 Fuel Pressure - Leakage


Keep in touch.

Feb 11, 2011 | Hyundai Tucson Cars & Trucks

1 Answer

P0193 fuel rail pressure circuit high input


P0193 - Fuel Rail Pressure Sensor Circuit High Input
The Fuel Rail Pressure (FRP) sensor is a diaphragm strain gauge device in which resistance changes with pressure. The electrical resistance of a strain gauge increases as pressure increases, and the resistance decreases as the pressure decreases. The varying resistance affects the voltage drop across the sensor terminals and provides electrical signal to the Powertrain Control Module (PCM) corresponding to pressure.

Strain gauge type sensors are consider passive sensors. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow.

Voltage that is dropped across a fixed resistor in series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.

The FRP sensor measures the pressure of the fuel near the fuel injectors. This signal is used by the PCM to adjust the fuel injector pulse width and meter fuel to each combustion cylinder.

Symptoms:
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine will not start

Possible causes
- Excessive resistance in the circuit
- Low or no fuel
- Wiring harness connector of the fuel pressure sensor
- Fuel Rail Pressure Sensor
- Fuel Pump


Hope this helps (remember to rate this answer).

Jan 12, 2011 | 2004 Ford Explorer Sport Trac

1 Answer

My child away at college, has a Rav4, 2008 with a warning light on that looks like "tire tread?" Just had the oil changed 2 weeks ago, so shouldn't have anything to do with that. Sound familiar?...


That symbol (tire tread) could mean a low tire pressure. The majority of vehicles today have the low tire pressure warning system, which indicates that one or more of the tires are below the minimum tire pressure. Have the tire pressure checked in each tire. As for turning the warning light off, some vehicles the light will go out after tires are inflated properly. Have them check the owner's manual for resetting warning light. Please inform me as to whether or not it was the tires...thanks.

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1 Answer

My 2002 silverado needed fuel (gas light on). Got


Check fuel pressure at injector rail. It should be at least 45psi.
If it is low replace fuel filter. If pressure is still low you will need a new fuel pump.
Dirt from the bottom of the fuel tank may have burned the pump or blocked filter.

Jun 24, 2009 | 2002 Chevrolet Silverado 2500HD

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