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Fuel pressure 4.6

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Bad fuel pressure regulator or possibly the fuel pump

Posted on Mar 23, 2014

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Posted on Jan 02, 2017

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What sh0uld fuel press be 99 ford ranger 2.5 4 cyl ?


45 minimum to 65 maximum depending on the injector system
most fuel injector systems operate around the 55 psi mark

Apr 21, 2017 | Ford Cars & Trucks

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Detroit Diesel Fault Codes


Code Description DDEC V Circuit
11 P 187 4 Chain PTO. Short circuit in the power
11 P 187 7 control system PTO wrong answers
12 P 187 3 Chain PTO. Short circuit in the ground
13 P 111 4-level circuit antifreeze. Short circuit in the ground
13 P 111 6 second-level circuit antifreeze. Short circuit in the ground
14 P 52 3 circuit coolant temperature intercooler. Short circuit in the power
14 P 110 3 circuit temperature antifreeze. Short circuit in the power
14 P 175 3 Chain oil temperature. Short circuit in the power
15 P 52 4 circuit coolant temperature intercooler. Short circuit in the ground
15 P 110 4 circuit temperature antifreeze. Short circuit in the ground
15 P 175 4 Chain oil temperature. Short circuit in the ground
16 P 111 3-level circuit antifreeze. Short circuit in the power
16 P 111 5 second circuit level antifreeze. Short circuit in the power
17 P 51 3 Throttle position circuit failed high
17 P 72 3 Bypass position circuit failed high
17 P 3 354 Relative humidity sensor circuit failed high
18 P 51 4 Throttle position circuit failed low
18 P 72 4 Bypass position circuit failed low
18 P 354 4 Relative humidity sensor circuit failed low
21 P 91 3 TPS circuit failed high
22 P 91 4 TPS circuit failed low
23 s 65 3 Oxygen content circuit failed high
23 P 174 3 Chain fuel temperature. Short circuit in the power
24 s 65 4 Oxygen content circuit failed low
24 p 174 4 Chain fuel temperature. Short circuit in the ground
25 no codes
26 s 25 November Aux. shutdown # 1 active
26 S 61 11 Aux. shutdown # 2 active (Incorrect SID. subject to change)
27, p 105 3 circuit temperature in the reservoir. Short circuit in the power
27 p 171 3 Ambient air temp circuit failed high
27 p 172 3 Air temp, circuit failed high
28, p 105 to 4 Chain manifold temperature. Short circuit in the ground
28 p 171 4 Ambient air temp circuit failed low
28 p 172 4 Air temp, circuit failed low
29 p 404 4 TCO temperature circuit failed low
29 p 351 4 TCI Temperature circuit failed low
31 S 51 3 Aux. Output # 3 open circuit (high side) S3
31 S 51 4 Aux. Output # 3 short to ground (high side) S3
31 S 51 7 Aux. Output # 3 mech. system fail S3
31 s 52 3 Aux. Output # 4 open circuit (high side) T3
31 s 52 4 Aux. Output # 4 short to ground (high side) T3
31 s 52 7 Aux. Output # 4 mech. system fail T3
32 S 238 3 SEL short to battery B1
32 S 238 4 SEL open circuit B1
32 s 239 3 CEL short to battery B2
32 s 239 4 CEL open circuit B2
33 p 102 3 Boost pressure circuit failed high
34 p 102 4 Boost pressure circuit failed low
35 p 19 March Ext range oil pressure circuit failed high
35 p 100 3 Chain oil pressure. Short circuit in the power
36 P 19 April Ext range oil pressure circuit failed low
36 P 100 4 Chain oil pressure. Short circuit in the ground
37 P 18 March Ext range fuel pressure circuit failed high
37 P 94 3 Chain fuel pressure. Short circuit in the power
37 P 95 3 Fuel Filter Restriction circuit failed high
38 P 18 April Ext range fuel pressure circuit failed low
38 P 94 4 Chain fuel pressure. Short circuit in the ground
38 P 95 4 Fuel Filter Restriction circuit failed low
39 S 146 2 Mechanical error EGR valve
39 S 146 12 Mechanical error EGR valve
39 S 146 return valve 7 does not meet the exhaust
39 S 147 2 turbocharger control mechanism does not respond
39 s 147 12 turbocharger control mechanism does not respond
39 s 14 147 current returns exhaust gases enough
39 S 147 11 turbocharger control mechanism does not respond
39 S 147 7 turbocharger control mechanism does not respond
41 S 21 0 Too many SRS (missing TRS)
42 S 21 January Too few SRS (missing SRS)
43 p 111 1 Low coolant level
44 p 52 0 ntercooler coolant temp, high
44 p 105 0 temperature in the reservoir above the norm
44 p 110 0 antifreeze temperature above normal
44 p 172 0 Air inlet temp, high
44 p 175 0 Oil temperature above normal
45 p 19 January Ext range oil pressure low
45 p 100 1 Oil pressure below normal
46 p 168 1 Low voltage batteries
46 S 214 1 RTC Backup Battery Voltage Low
46 S 232 1 Sensor Supply Voltage Low A3 & W1
P 0 47 18 Ext range fuel pressure high
P 47 94 0 The fuel pressure above normal
47 p 0 102 Turbo boost press high
47 p 106 0 Air inlet pressure high or TCBV diff press high
47 p 164 0 Injection control pressure high
48 p 18 January Ext range fuel pressure low
48 p 94 1 fuel pressure below normal
48 p 106 1 Air inlet pressure low
48 p 164 1 Injection control pressure low
48 p 351 1 TCI Temperature below range
48 p 404 1 TCO Temperature below range
48 p 411 1 EGR Delta pressure low
48 p 412 1 EGR Temperature low
49 p 351 0 TCI Temperature above range
49 p 404 0 TCO Temperature above range

More Fault Codes here Detroit Disel DTC

on Dec 20, 2016 | Cars & Trucks

1 Answer

How 2 change the rubber hose fuel line on bottom of pump on 472 engine


Most likely your fuel system is about 150psi fuel pressure. So it is no ordinary rubber fuel line unless it is the old carbureted engine. If the low pressure system at a pump pressure of 4 to 5psi, then yes you can change with an ordinary rubber fuel resistant fuel line.

Apr 01, 2015 | Cars & Trucks

1 Answer

What should the fuel pressure be on a 2000 gmc jimmy 4+4 4 door v 6


This system should be at 60-66 psi NO MORE NO LESS.If the pressure is low it can be the fuel pump but can also be the fuel pressure regulator valve so make sure you check the FPR

Oct 22, 2014 | 2000 GMC Jimmy

1 Answer

Need info on how to change a 2000 Cadillac


REMOVAL PROCEDURE
TOOLS REQUIRED
A J 34730-1A Fuel Pressure Gauge
A J 39765 Fuel Sender Lock Nut Wrench
CAUTION: Refer to Batterry- Disconnect Caution in Service Precautions.
1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure. See:
Fuel Delivery and Air Induction/Fuel Filter/Fuel Pressure Release/Service and
Repair
3. Drain the fuel tank. Refer to Fuel Tank Draining Procedure. See: Fuel Delivery and
Air Induction/Fuel Tank/Service and Repair/Procedures
4. Remove the fuel tank.
5. Remove the fuel sender assembly.
6. Disconnect the fuel pump electrical connector (5).
7. Remove the fuel level sensor electrical connector retaining clip (6).
8. Disconnect the fuel level sensor electrical connector (7) from under the fuel sender
cover.
9. Remove the fuel level sensor retaining clip (4).
10. Squeeze the locking fangs and remove the fuel level sensor (3).
INSTALLATION PROCEDURE
1. Install the fuel level sensor (3).
2. Install the fuel level sensor retaining clip (4).
3. Connect the fuel level s ens oi electrical connector (7).
4. Connect the fuel level sensor electrical connector retaining clip (6).
5. Connect the fuel pump electrical connector (5).
6. Install the fuel sender assembly.
7. Install the fuel tank.
8. Refill the fuel tank.
9. Install the fuel filler cap.
10. Connect the negative battery cable.
11. Inspect for leaks.
11.1. Turn ON the ignition for 2 seconds.
11.2. Turn OFF the ignition for 10 seconds.
11.3. Turn ON the ignition.
11.4. Inspect for fuel leaks. 55dcc1df-120b-4a37-b63b-a35953989584.png

Aug 29, 2014 | Cars & Trucks

1 Answer

I have a 2004 Tahoe which has misfire problems (P0300). I changed the plugs, wires, fuel filter and air filter but problem still exist. The 4 plugs on the passenger side continue to file out and become...


Removal & Installation of fuel Regulators on
4.8L, 5.3L & 6.0L Engine To Remove:
CAUTION
Three styles of fuel pressure regulators and fuel rails will be used in this model year. Each regulator has a different "footprint" that consequently changes the size of the receiving port in the fuel rail. The regulator retaining clips are specific to each rail-regulator design and cannot be interchanged.
chevy_aval15_02-04_fuelrail.gif

  1. Remove the engine sight shield.
  2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Procedure.
  3. Clean the fuel pressure regulator retainer and the surrounding area.
  4. Remove or disconnect the following:
    • Fuel pressure regulator vacuum line.
    • Fuel pressure regulator retainer.
    • Fuel pressure regulator.
  5. Remove the following parts from the fuel rail:
    • Backup ring (10)
    • Regulator Seal O-ring (11)
    • Regulator filter (12)
    • Regulator seal O-ring (13)
To Install:
chevy_aval15_02-04_retainer.gif

  1. Make sure the NEW fuel pressure regulator retainer is the right one.
  2. The tabs (1) are used on the straight vacuum port retainer (2), and the E85-straight vacuum port retainer (3).
  3. The angle vacuum port retainer (4) has no tabs. chevy_aval15_02-04_fuelrail.gif

  4. Install the following parts onto the fuel pressure regulator (9).
    • Backup ring (10)
    • Regulator seal O-ring (11)
    • Regulator filter (12)
    • Regulator seal O-ring (13)
  5. Lubricate the fuel pressure regulator O-rings with clean oil.
  6. Install the fuel pressure regulator and retainer. CAUTION
    Whenever the fuel pressure regulator is removed from the fuel rail NEW O-rings and a NEW retaining clip should be used on reinstallation.
  7. Connect the vacuum line.
  8. Tighten the fuel filler cap.
  9. Use the following to inspect for leaks:
    • Turn ON the ignition, with the engine OFF, for 2 seconds.
    • Turn OFF the ignition for 10 seconds.
    • Turn ON the ignition, with the engine OFF.
    • Install the engine sight shield.
8.1L Engine To Remove:
Fuel pressure regulator vacuum line gm_trk_sub15_fuel_press_reg_vac_line.gif

  1. Before servicing the vehicle refer to the precautions at the beginning of thjs section
  2. Remove the fuel injector sight shield as needed
  3. Relieve fuel system pressure (See: Fuel Pressure Relieving)
  4. Disconnect the fuel pressure regulator vacuum line (A) 8.1L Fuel pressure regulator retainers gm_trk_sub15_81l_fuel_press_reg_retainers.gif

  5. Clean any dirt from the fuel pressure regulator retainer and the surrounding area
  6. Remove the fuel pressure regulator retainer (I)
  7. Remove the fuel pressure regulator (H) from the fuel pressure regulator housing
To Install:
8.1L Fuel pressure regulator retainers gm_trk_sub15_81l_fuel_press_reg_retainers.gif

  1. Install or connect the following:
    • Backup ring (J) on the fuel pressure regulator (H)
    • New large O-Ring (K) on the fuel pressure regulator
    • Regulator filter (L) on the fuel pressure regulator
    • New small O-Ring (M) on the fuel pressure regulator
  2. Lubricate the fuel pressure regulator large O-Ring and the small O-Ring with clean engine oil
  3. Push the fuel pressure regulator onto the regulator housing on the fuel rail
  4. Install a new fuel pressure regulator retainer (I)
  5. Install or connect the following:
    • Fuel pressure regulator vacuum line
    • Negative battery cable
  6. Tighten the fuel filler cap
  7. Inspect for leaks using the following procedure:
    • Turn on the ignition with the engine off for two seconds
    • Turn off the ignition for 10 seconds
    • Turn on the ignition with the engine off
    • Inspect for fuel leaks
  8. Install the fuel injector sight shield
  9. Road test the vehicle to check performance
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Sep 02, 2010 | Chevrolet Tahoe Cars & Trucks

3 Answers

2000 Malibu Starts then looses fuel pressure I have replaced the fuel pump and the fuel pump relay still same problem


Keep in mind that you have several components there:
- Fuel Pump Sender Assembly,
- Fuel Pressure Regulator,
- Fuel Rail Assembly, and
- Fuel Injectors.

1.- Fuel Pump (Sender Assembly) - TESTING
Refer to the accompanying charts for fuel pump diagnosis and testing.

The fuel injection system remains under pressure, even after the engine has been turned OFF. The fuel system pressure must be relieved before disconnecting any fuel lines. Failure to do so may result in fire and/or personal injury.

eb744a2.jpg

Fig. 3.1L engine OBD system check to be done before fuel pump relay circuit diagnosis


26456ba.jpg

Fig. 3.1L engine fuel pump relay circuit diagnosis (1 of 2)


b3b739d.jpg

Fig. 3.1L engine fuel pump relay circuit diagnosis (2 of 2)


db78a73.jpg

Fig. View of the fuel pressure test port (Schrader valve)-3.1L engine

A - 3.1L engine fuel system pressure test (1 of 4)
B - 3.1L engine fuel system pressure test (2 of 4)
C - 3.1L engine fuel system pressure test (3 of 4)
D - 3.1L engine fuel system pressure test (4 of 4)

c8a9798.jpg

Fig. The fuel pump/fuel sender module assembly is mounted in the fuel tank


2.-
Fuel Pressure Regulator - REMOVAL & INSTALLATION

(the fuel pressure regulator, which is located on the fuel rail assembly)

NOTE:
Before removing the fuel regulator assembly, place a clean shop towel under the regulator to catch any fuel drips

  1. Properly relieve the fuel system pressure.
  2. If not done already, disconnect the negative battery cable.
  3. On the 3.1L engine, remove the intake manifold plenum, as outlined in .
  4. On the 2.4L engine, remove the fuel rail. Refer to procedure earlier in this section.
  5. Detach the vacuum line from the regulator.
  6. Place a shop towel under the regulator to catch any fuel that may drip out. Unfasten the fuel pressure regulator retaining screw, then remove the regulator by twisting and pulling it from the fuel rail.
  7. Remove and discard the O-ring seal. Inspect the filter screen for contamination and replace if necessary.
To install:
  1. Prior to assembling the pressure regulator to the fuel rail, lubricate the new rail-to-regulator O-ring seal with clean engine oil.
  2. Place the O-ring on the pressure regulator and install the pressure regulator to the fuel rail.
  3. Install the retainer or coat the regulator mounting screws with an approved thread locking compound and secure the pressure regulator in place. Tighten the mounting screw to 76 inch lbs. (8.5 Nm).
  4. If removed, install the fuel rail assembly to the engine.
WARNING The fuel return pipe must be connected before tightening the regulator retaining screw to prevent the regulator from rotating. Rotation of the regulator could damage the retainer and spacer bracket and lead to a fuel leak at the regulator inlet.
  1. Connect the fuel feed line and return line to the fuel rail assembly, use a backup wrench on the fittings to prevent turning.
  2. Attach the vacuum line to the regulator.
  3. On the 3.1L engine, install the intake manifold plenum.
  4. Connect the negative battery cable. Turn the ignition to the ON position for two seconds, then turn it to the OFF position for ten seconds. Turn again to the ON position and check for fuel leaks.

continue...

May 24, 2010 | Chevrolet Malibu Cars & Trucks

1 Answer

Mazada 323 coupe, Replcaed Dist, have spark to all 4 plugs, Disconnected Fuel line and fuel is flowing. Still engince wont start. Could the injectors be bad>? or could fuel pump not be pushing enough...


Check the fuel pressure and make sure there's enough pressure for the regulator to open the injectors. You check fuel pressure by hooking a fuel pressure tester up to the fuel line. Low pressure=bad fuel pump. Hope this helps.

Feb 23, 2009 | 1994 Mazda 323

1 Answer

Toyota 4 runner fuel pressure


pressuer should actually raise under throttle, but not much. maybe 5psi. 38-44psi is the correct range. if your dropping much I would replace the fuel filter. next I would check the tank for debris or water, finally i would replace the Fuel pressure regulator.

Jan 10, 2009 | 1995 Toyota 4Runner

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