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My Escalade is losing power as I Drive step on the accelerator I changed both camshaft sensor and crankshaft sensor also changed fuel pump and fuel lines and fuel filter?

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  • Contributor
  • 9 Answers

What about air filter and mass air flow sensor are they clean ?

Posted on May 15, 2015

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Posted on Jan 02, 2017

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cognac222
  • 4 Answers

SOURCE: 89 Corsica: no power, hesitates in drive, idles

Check your fuel pressure, and or injectors. You may have too much fuel getting into the engine causing it to burn rich and overheat the converters.

Posted on Apr 26, 2009

  • 12 Answers

SOURCE: 2000 pontiac grand am stalling after couple miles

YOUR GAS SMELL MIGHT BE THE FUEL PRESSURE REGULATOR LEAKING UP THRU THE CENTER OF THE UNIT JUST LIKE AN OIL PRESSURE SENDER WOULD. IT IS LOCATED IN THE FUEL RAIL

Posted on May 20, 2009

  • 1596 Answers

SOURCE: Crankshaft Position Sensor and Camshaft Position Sensor

REMOVE OR DISCONNECT

  1. Serpentine belt from the crankshaft pulley.
  2. Raise the vehicle on a hoist.
  3. Right front tire and wheel assembly.
  4. Right inner fender access cover.
  5. Using a 28 mm socket, remove the crankshaft harmonic balancer retaining bolt.
  6. Crankshaft harmonic balancer using tool J 38192 or equivalent.
  7. Sensor electrical connector.
  8. Foreign object deflector.
  9. Sensor and pedestal from block face.
  10. Sensor from pedestal.
INSTALL OR CONNECT:

  1. Loosely install the crankshaft sensor on the pedestal.
  2. Position the sensor with pedestal attached on special Tool J 37089.
  3. Position the special tool on the crankshaft.
  4. Bolts to hold the pedestal to the block face, torque to 20-40 Nm (14-28 lb.ft).
  5. Torque the pedestal pinch bolt to 3-4 Nm (38-40 lb.in).
  6. Remove special tool J 37089.
  7. Place the special tool 37089 on the harmonic balancer and turn. If any vane of the harmonic balancer touches the tool, replace the balancer assembly.
  8. Balancer on the crankshaft.
    • Apply thread sealer (GM 1052080) or equivalent to the threads of the balancer bolt.
  1. Torque the crankshaft bolt to 140 Nm + 56°(104 lb.ft + 56°).
  2. Foreign object deflector.
  3. Electrical connector.
  4. Inner fender shield.
  5. Tire and wheel assembly, torque to 140 Nm (104 lb.ft).
  6. Lower the vehicle.
  7. Serpentine belt.

Posted on Jun 02, 2009

dennymulford
  • 1055 Answers

SOURCE: 1998 GMC Sierra- runs rough then stalls when

had this problem on my neighbors 98 chevy truck with the same engine !!
it turnd out too be the fuel pressure regulator,you have too pull the upper intake too replace it!!

Posted on Jun 06, 2009

  • 6982 Answers

SOURCE: 1998 Jeep grand Cheroke hard cranking, sputtering, rough idling

In READING what you wrote, it appears that your car is difficult to start and pretty much is rough while running....It also appears that your are randomly replacing parts...How did you verify that the parts your have replaced had failed? I suggest you get a basic manual like chiltons or haynes as well as a decent digital volt/ohmeter, then do some testing. Pay close attention to map sensor test and manifold air temp. Having a good fuel pump does not insure that your injectors are clean enough to deliver a good spray pattern This will not show up on any test...you need to actually look at them. There are other items to look at but I think you will likely find your problem in what i mentioned. (you already checked for vacuum leaks, right?)
Good luck!

Posted on Jul 27, 2009

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1 Answer

Freelander 04 does not start... but will crank.... pressure is at 53 ... i changes the camshaft sensor and crankshaft sens


When you turn the ignition on can you hear the fuel pump run for a second or so? If not could be faulty fuel pump.

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1997 Toyota Avalon fuel pump won't turn on


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Troubleshoot crank position sensor location


For testing crank sensor,check the help link below:---How to test Crankshaft Position Sensor? http://fordrepairhelp.blogspot.in/2012/03/how-to-test-ford-focus-crankshaft.html
----------

How to test Crankshaft Position CKP Sensor?

---------------
Crankshaft Position Sensor Operation?

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Replace Camshaft position sensor and Crankshaft Position Sensor? http://technoanswers.blogspot.in/2012/06/2005-dodge-durango-replace-camshaft.html
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GMC Crankshaft Position (CKP) Sensor Replacing? http://schematicsdiagram.blogspot.com/2011/12/gmc-crankshaft-position-ckp-sensor.html

------------
These details will help.
Thanks.

Nov 25, 2012 | 2000 Cadillac Escalade

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Where is the cam shaft location sensor located on a 2005 gmc yukon


camshaft sensor located above crankshaft pulley, the camshaft sensor mounted on the front timing cover above the crankshaft pulley.

Sep 17, 2012 | 2005 GMC Yukon

1 Answer

2002 isuzu rodeo cylinder head torque lbs. for 2.2


Print


Removal & Installation

2.2L Engine

  1. Before servicing the vehicle, refer to the Precautions section.
  2. Drain the cooling system.
  3. Relieve the fuel system pressure.
  4. Remove or disconnect the following: Negative battery cableIntake Air Temperature (IAT) sensor connectorPositive Crankcase Ventilation (PCV) valve and hoseAir intake assemblyUpper radiator hoseAccessory drive beltExhaust front pipeAlternator and bracketsCrankshaft Position (CKP) sensor connectorKnock sensor connectorHeater hosesWater bypass hoseFuel linesEvaporative Emissions (EVAP) valve connectorCanister hoseIntake manifoldEngine wiring harness connectors at left rear of the engine compartmentPower steering pump pressure switch connectorFront coverSpark plugs and wiresCamshaft Position (CMP) sensorValve coverTiming belt. Refer to the Timing Belt unit repair section.Timing belt idler pulleysTiming belt rear coverOil pressure switch connectorCamshaftsCylinder head. Remove the bolts in reverse of the tightening sequence.

    Negative battery cable Intake Air Temperature (IAT) sensor connector Positive Crankcase Ventilation (PCV) valve and hose Air intake assembly Upper radiator hose Accessory drive belt Exhaust front pipe Alternator and brackets Crankshaft Position (CKP) sensor connector Knock sensor connector Heater hoses Water bypass hose Fuel lines Evaporative Emissions (EVAP) valve connector Canister hose Intake manifold Engine wiring harness connectors at left rear of the engine compartment Power steering pump pressure switch connector Front cover Spark plugs and wires Camshaft Position (CMP) sensor Valve cover Timing belt. Refer to the Timing Belt unit repair section. Timing belt idler pulleys Timing belt rear cover Oil pressure switch connector Camshafts Cylinder head. Remove the bolts in reverse of the tightening sequence.

To install:


0996b43f802097a8.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Cylinder head torque sequence-2.2L (VIN D) engine

NOTE Use new cylinder head bolts for assembly.

  1. Install the cylinder head with a new gasket. Tighten the bolts in sequence as follows: Step 1: 18 ft. lbs. (25 Nm)Step 2: Plus 90 degreesStep 3: Plus 90 degreesStep 4: Plus 90 degrees
    1. Step 1: 18 ft. lbs. (25 Nm)
    2. Step 2: Plus 90 degrees
    3. Step 3: Plus 90 degrees
    4. Step 4: Plus 90 degrees

  2. Install or connect the following: CamshaftsOil pressure switch connectorTiming belt rear coverTiming belt idler pulleys. Tighten the bolts to 18 ft. lbs. (25 Nm).Timing beltValve coverCMP sensorSpark plugs and wiresFront coverPower steering pump pressure switch connectorEngine wiring harness connectors at left rear of the engine compartmentIntake manifoldCanister hoseEVAP valve connectorFuel linesWater bypass hoseHeater hosesKnock sensor connectorCKP sensor connectorAlternator and bracketsExhaust front pipeAccessory drive beltUpper radiator hoseAir intake assemblyPCV valve and hoseIAT sensor connectorNegative battery cable

    Camshafts Oil pressure switch connector Timing belt rear cover Timing belt idler pulleys. Tighten the bolts to 18 ft. lbs. (25 Nm). Timing belt Valve cover CMP sensor Spark plugs and wires Front cover Power steering pump pressure switch connector Engine wiring harness connectors at left rear of the engine compartment Intake manifold Canister hose EVAP valve connector Fuel lines Water bypass hose Heater hoses Knock sensor connector CKP sensor connector Alternator and brackets Exhaust front pipe Accessory drive belt Upper radiator hose Air intake assembly PCV valve and hose IAT sensor connector Negative battery cable
  3. Fill the cooling system.
  4. Start the engine and check for leaks.

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Drain the cooling system.
  3. Relieve the fuel system pressure.
  4. Remove or disconnect the following:

    Negative battery cable Intake Air Temperature (IAT) sensor connector Positive Crankcase Ventilation (PCV) valve and hose Air intake assembly Upper radiator hose Accessory drive belt Exhaust front pipe Alternator and brackets Crankshaft Position (CKP) sensor connector Knock sensor connector Heater hoses Water bypass hose Fuel lines Evaporative Emissions (EVAP) valve connector Canister hose Intake manifold Engine wiring harness connectors at left rear of the engine compartment Power steering pump pressure switch connector Front cover Spark plugs and wires Camshaft Position (CMP) sensor Valve cover Timing belt. Refer to the Timing Belt procedure. Timing belt idler pulleys Timing belt rear cover Oil pressure switch connector Camshafts Cylinder head. Remove the bolts in reverse of the tightening sequence.

To install:

0996b43f802097a8.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Cylinder head torque sequence-2.2L (VIN D) engine


NOTE Use new cylinder head bolts for assembly.

  1. Install the cylinder head with a new gasket. Tighten the bolts in sequence as follows:
    1. Step 1: 18 ft. lbs. (25 Nm)
    2. Step 2: Plus 90 degrees
    3. Step 3: Plus 90 degrees
    4. Step 4: Plus 90 degrees

  2. Install or connect the following:

    Camshafts Oil pressure switch connector Timing belt rear cover Timing belt idler pulleys. Tighten the bolts to 18 ft. lbs. (25 Nm). Timing belt Valve cover CMP sensor Spark plugs and wires Front cover Power steering pump pressure switch connector Engine wiring harness connectors at left rear of the engine compartment Intake manifold Canister hose EVAP valve connector Fuel lines Water bypass hose Heater hoses Knock sensor connector CKP sensor connector Alternator and brackets Exhaust front pipe Accessory drive belt Upper radiator hose Air intake assembly PCV valve and hose IAT sensor connector Negative battery cable
  3. Fill the cooling system.
  4. Start the engine and check for leaks.

May 26, 2012 | Isuzu Rodeo Cars & Trucks

1 Answer

I have a 2001 mazda 626 and when im driving it skips sometimes


Description
Engine stops unexpectedly at beginning of acceleration or during acceleration
Engine stops unexpectedly while cruising
Engine speed fluctuates during acceleration or while cruising
Engine misses during acceleration or cruising
Vehicle bucks or jerks during acceleration, while cruising, or upon deceleration
Momentary pause at the beginning of acceleration or during acceleration
Momentary minor irregularity in engine output


Possible Causes
Air leakage from intake-air system parts
Improper operation of idle air control valve
Crankshaft sensor circuit malfunction
Camshaft sensor circuit malfunction
Spark leakage from ignition coil
PCV valve malfunction
Restriction in exhaust system
Open or short circuit in fuel pump and related harness
Improper fuel pressure
Fuel leakage from injector
Improper A/C system operation
Purge solenoid valve malfunction
EGR valve malfunction
EGR solenoid malfunction
Low engine compression
Vacuum leakage
Fuel pump control relay and resistor
Poor fuel quality
Air filter restriction
Electrical connector disconnection
No battery power supply to ECU or poor ground
Fuel pump mechanical malfunction
Clogged injector


Diagnostic Procedure

1. Verify vacuum hose connections, check the air filter, check for leakage or restriction of the intake-air system, ensure proper sealing of intake manifold and components attached (e.g. EGR, IAC), examine ignition components, fuel quality, and electrical connections. Are all items okay?

Yes - Go to next step
No - Service as required.
2. Check for stored OBD-II error codes. Are there any stored codes?

Yes - Go to appropriate DTC test
No - Go to next step
3. Is engine overheating?

Yes - Go to Symptom #10 for "engine overheats"
No - Go to next step
4. Connect an OBD-II scan tool capable of logging sensor output and drive the vehicle. Are engine speed (RPM), mass-airflow (MAF), throttle position (TP), and vehicle speed (VSS) PIDs within specifications?

Yes - Go to next step
No - Inspect crankshaft position sensor (RPM) circuit, mass airflow sensor (MAF) circuit, throttle position sensor (TP) circuit, and vehicle speed sensor (VSS) circuit.
5. Visually inspect the crankshaft position sensor and the teeth on the crankshaft pulley. Are these components okay?

Yes - Go to next step
No - Service as required
6. Measure the gap between the crankshaft position sensor and the teeth of the crankshaft pulley (specification: 0.5-1.5mm). Is the gap within specification?

Yes - Go to next step
No - Adjust crankshaft position sensor
7. Check spark plug condition. Are spark plugs wet, grayish white, or covered with carbon soot?

Yes - If wet or sooty, check for leaky fuel injector
No - Install spark plugs on original cylinders then go to next step
8. Remove PCV valve and shake PCV valve. Does the valve rattle?

Yes - Go to next step
No - Replace PCV valve
9. Verify that the throttle lever is resting on the throttle valve stop screw and/or throttle valve orifice plug. Are there any faults present?

Yes - adjust as necessary
No - Go to next step
10. Is there an exhaust restriction?

Yes - Inspect exhaust system
No - Go to next step
11. Check fuel pressure between fuel filter and fuel rail. Connect a jumper wire between the F/P terminal at the engine bay DLC connector and ground. Is the fuel line pressure within specification (280-330kPa or 41-48psi) with the ignition switch on?

Yes - Go to next step
No - If there is no or low pressure, check the fuel pump circuit, control relay and resistor, fuel pump relief valve as well as for fuel leakage inside the fuel pressure regulator and for a restricted main fuel line. If the fuel pressure is too high, check the fuel pressure regulator, the fuel pump control relay and resistor, and for a clogged fuel return line
12. Does fuel pressure increase when the accelerator is depressed?

Yes - Go to next step
No - Examine the fuel pressure regulator control (PRC) solenoid
13. Skip to the next step if the symptom occurs with or without the A/C running. If symptom occurs only with A/C operation, connect a pressure gauge to the A/C line and measure both low and high side pressures. Are the pressures within specifications?

Yes - Go to next step
No - Check the refrigerant charging amount, A/C pressure switch operation, condenser fan operation, and the A/C relay
14. Skip to the next step if the symptom occurs with or without cruise control operation. If symptom occurs only during cruise control operation, inspect the cruise control system. Is cruise control system operating properly?

Yes - Go to next step
No - Repair cruise control system
15. Is the evaporative emissions purge control system okay?

Yes - Go to next step
No - Check if purge control solenoid sticks open mechanically. Inspect the evaporative emissions control system.
16. Visually inspect the camshaft pulley, is the camshaft pulley okay?

Yes - Go to next step
No - Replace camshaft pulley
17. With the engine idling, disconnect the vacuum hose from the EGR valve and plug it. Is the engine condition improved?

Yes - Check for a stuck EGR solenoid vacuum valve, vent valve, and solenoid valve connector terminals
No - Check if the EGR valve moves smoothly. If yes, go to next step. If no, replace the EGR valve
18. Is the air-bypass valve actuator okay?

Yes - Go to next step
No - Replace air-bypass valve actuator
19. Check engine compression with a cylinder compression test tool. Is the engine compression within specifications?

Yes - Verify valve timing and transmission operation
No - Check for cause
20. Verify test results

Apr 25, 2012 | 2001 Mazda 626

1 Answer

How to replace head gasket on 4 cylander


2.6L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Drain the cooling system.
  3. Relieve the fuel system pressure.
  4. Remove or disconnect the following:
    • Negative battery cable
    • Hood
    • Accessory drive belts
    • Accelerator cable
    • Positive Crankcase Ventilation (PCV) valve and hose
    • Air intake duct
    • Fuel pressure regulator vacuum line
    • Canister hose
    • Brake booster vacuum line
    • Engine wiring harness connectors at right wheel housing
    • Ground cable connector at the intake manifold, starter and firewall
    • Heated Oxygen (HO2S) sensor connector
    • Alternator wiring connectors
    • Oil pressure switch connector
    • Starter motor harness connectors
    • Ignition coil connector
    • Spark plug wires
    • Distributor
    • Exhaust front pipe
    • Exhaust Gas Recirculation (EGR) gas temperature sensor connector
    • Air pump
    • EGR pipe
    • Heat shield
    • Exhaust manifold
    • Throttle Position (TP) switch connector
    • Cooling fan
    • Water pump pulley
    • Power steering pump
    • Intake manifold
    • Crankshaft pulley
    • Front cover
    • Timing belt. Refer to the Timing Belt unit repair section.
    • Valve cover
    • Rocker arms
    • Camshaft
    • Cylinder head
Cylinder head bolt loosening sequence - 2.6L engine

tecnovative_96.gif
  1. To install:
  2. NOTE: Refer to Section 1 of this manual for the cylinder head torque sequence illustration. The illustration is located after the Torque Specification Chart.
  3. NOTE: Lubricate the cylinder head bolts with clean engine oil for assembly.
  4. Install the cylinder head with a new gasket. Tighten the bolts in sequence as follows:
  5. Step 1: 58 ft. lbs. (75 Nm)
  6. Step 2: 72 ft. lbs. (98 Nm)
    1. Install or connect the following:
    2. Camshaft
    • Rocker arms
    • Valve cover
    • Timing belt
    • Front cover
    • Crankshaft pulley. Tighten the bolt to 87 ft. lbs. (128 Nm).
    • Intake manifold
    • Power steering pump
    • Water pump pulley
    • Cooling fan
    • TP switch connector
    • Exhaust manifold
    • Heat shield
    • EGR pipe
    • Air pump
    • EGR gas temperature sensor connector
    • Exhaust front pipe
    • Distributor
    • Spark plug wires
    • Ignition coil connector
    • Starter motor harness connectors
    • Oil pressure switch connector
    • Alternator wiring connectors
    • HO2S sensor connector
    • Ground cable connector at the intake manifold, starter and firewall
    • Engine wiring harness connectors at right wheel housing
    • Brake booster vacuum line
    • Canister hose
    • Fuel pressure regulator vacuum line
    • Air intake duct
    • PCV valve and hose
    • Accelerator cable
    • Accessory drive belts
    • Hood
    • Negative battery cable
    1. Fill the cooling system.
    2. Start the engine and check for leaks.

    tecnovative_65.jpg

    Feb 05, 2011 | 1997 Isuzu Rodeo

    1 Answer

    Engine stalling


    It could be a bad fuel pump losing pressure intermittent. it could be a plugged fuel filter. Mmore likely is a camshaft or crankshaft position sensor dropping out causing loss of spark. take it to a shop with a scanner so they can drive it while monitoring sensors.

    Tell us nws.

    Jul 07, 2010 | 1997 Dodge Caravan

    2 Answers

    Engine will crank but will not start and run.


    Change the fuel filter first! It is located on most models passenger side center to rear center of van & tucked up near frame rail. Good luck!

    Dec 01, 2009 | 1999 Ford Windstar

    2 Answers

    1094 944 porsche cranks but wont fire. fuel pump has no power to it. i changed the ignition. still nothing. could it be the factory alarm.please help.


    run a fused wire from the positive side of your fuel pump to your "on" side of your ignition switch bypassing the alarm kill switch and, allowing you to drive the car

    Jun 09, 2009 | 1984 Porsche 944

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