How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Eric Your Own Question

Eric
Eric, Automotive Repair Shop Manager
Category: Car
Satisfied Customers: 24692
Experience:  Automotive Repair Shop Manager, Technician/JA Mentor
3195632
Type Your Car Question Here...
Eric is online now
A new question is answered every 9 seconds

I have a 2000 Cadillac Eldorado the engine dies now and then

Resolved Question:

I have a 2000 Cadillac Eldorado the engine dies now and then when warming up. The only code that shows up now and then is the crankshaft sensor. I thought that is only had one which is located below the oil dip stick in front of the car. But the parts store said it had 2 one upper one lower? If it does where are they at and how do you tell which one is putting out the error code.
Submitted: 5 years ago.
Category: Car
Expert:  Eric replied 5 years ago.

HI,

 

 

P0335....Crankshaft Position Sensor A Circuit

P0336....Crankshaft Position Sensor A Circuit Range/Performance

P0337....Crankshaft Position Sensor A Circuit Low Input

P0338....Crankshaft Position Sensor A Circuit High Input

P0339....Crankshaft Position Sensor A Circuit Intermittent

 

 

P0385....Crankshaft Position Sensor 'B' Circuit

P0386....Crankshaft Position Sensor 'B' Circuit Range/Performance

P0387....Crankshaft Position Sensor 'B' Circuit Low Input

P0388....Crankshaft Position Sensor 'B' Circuit High Input

P0389....Crankshaft Position Sensor 'B' Circuit Intermittent

 

 

graphic

 

Fig. Showing engine side locations of the CKP sensors, EOP switch, and oil level switch: 1. Crankshaft Position Sensor (CKP) Sensor B; 2. Crankshaft Position Sensor (CKP) Sensor A; 3. Engine Oil Pressure (EOP) Switch; 4. Engine Oil Level Switch

 

 

After replacing the Crank sensor(s), a relearn procedure MUST be done with a diagnostic scanner:

 

  1. Raise and support the vehicle.
  2. Remove the air deflector.
  3. Remove the oil filter adaptor.
  4. Disconnect the crankshaft position sensor electrical connector.
  5. Remove the crankshaft sensor retaining bolt.
  6. Remove the crankshaft sensor.

    Click image to see an enlarged view

    Fig. Removing CKP Sensors

 

To install:


NOTE Inspect the crankshaft sensor O-ring for wear or damage. If a problem is found, replace the O-ring.

  1. Lubricate the crankshaft sensor O-ring with clean engine oil.
    NOTE Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  2. Install the crankshaft sensor and the retaining bolt. Tighten the retaining bolt between 10 Nm (89 inch lbs.).
  3. Connect the crankshaft position sensor electrical connector.
  4. Install the oil filter adaptor.
  5. Install the air deflector.
  6. Lower the vehicle.
  7. Operate the engine and inspect crankshaft sensor for engine oil leaks.
  8. Perform the CKP System Variation Learn Procedure.

 

  • With a scan tool, select the crankshaft position variation learn procedure.
  • Observe the fuel cut-off for the engine that you are performing the learn procedure on.
  • The scan tool instructs you to perform the following:
  • Block the drive wheels.
  • Apply the vehicles parking brake.
  • Cycle the ignition from OFF to ON.
  • Apply and hold the brake pedal.
  • Start and idle the engine (with A/C OFF).
  • Place the vehicle's transmission in Park (A/T) or Neutral (M/T).
  • The scan tool monitors certain component signals to determine if all the conditions are met to continue with the procedure. The scan tool only displays the condition that inhibits the procedure. The scan tool monitors the following components:

    Crankshaft position (CKP) sensors activity--If there is a CKP sensor condition, refer to the applicable DTC that set. Camshaft position (CMP) sensor activity--If there is a CMP sensor condition, refer to the applicable DTC that set. Engine coolant temperature (ECT)--If the engine coolant temperature is not warm enough, idle the engine until the engine coolant temperature reaches the correct temperature.
  • With the scan tool, enable the crankshaft position system variation learn procedure.
    NOTE While the learn procedure is in progress, release the throttle immediately when the engine starts to decelerate. The engine control is returned to the operator and the engine responds to throttle position after the learn procedure is complete.
  • Slowly increase the engine speed to the RPM that you observed.
  • Immediately release the throttle when fuel cut-off is reached.
  • The scan tool displays Learn Status: Learned this ignition. If the scan tool does NOT display this message and no additional DTCs set, refer to Symptom Diagnosis (No Codes) section . If a DTC set, refer to Diagnostic Trouble Code (DTC) List for the applicable DTC that set.
  • Turn OFF the ignition for 30 seconds after the learn procedure is completed successfully.
  • Eric, Automotive Repair Shop Manager
    Category: Car
    Satisfied Customers: 24692
    Experience: Automotive Repair Shop Manager, Technician/JA Mentor
    Eric and 21 other Car Specialists are ready to help you

    JustAnswer in the News:

     
     
     
    Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
    JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
    Web sites like justanswer.com/legal
    ...leave nothing to chance.
    Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
    Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
    I will tell you that...the things you have to go through to be an Expert are quite rigorous.
     
     
     

    What Customers are Saying:

     
     
     
    • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
    < Last | Next >
    • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
    • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
    • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
    • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
    • As a single woman, I really appreciate an excellent and affordable opinion.
      Thank you Geordie, I will not hesitate to contact justanswer in the future!
      Sue Charleston, WV
    • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
    • Excellent reply, and also very quick. Really sounds like the Expert knows what he is talking about. I will be back to use your service when I need more help with my RV. Dutch USA
     
     
     

    Meet The Experts:

     
     
     
    • Chris (aka-Moose)

      Technician

      Satisfied Customers:

      846
      16 years of experience
    < Last | Next >
    • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

      Chris (aka-Moose)

      Technician

      Satisfied Customers:

      846
      16 years of experience
    • http://ww2.justanswer.com/uploads/TE/TedG/2012-6-15_14759_avaLarge.64x64.jpg Ted G.'s Avatar

      Ted G.

      ASE Certified Technician

      Satisfied Customers:

      1596
      20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness
    • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

      George H.

      ASE Certified Technician

      Satisfied Customers:

      1311
      ASE Master Tech 15+ yrs, AAS Automotive Technology, Factory trained Asian specialist
    • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

      Amedee

      ASE Master Tech

      Satisfied Customers:

      2367
      ASE Master Tech advanced level specialist
    • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

      Jerry

      Master Mechanic

      Satisfied Customers:

      1906
      ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager
    • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

      Richard

      ASE Certified Technician

      Satisfied Customers:

      942
      12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes
    • http://ww2.justanswer.com/uploads/ST/Steve7654/2012-6-5_215929_japic800x660.64x64.jpg Steve's Avatar

      Steve

      Auto Service Technician

      Satisfied Customers:

      1980
      25+ yrs experience as a professional working technician; ASE L1 master technician