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 ase_master327 Your Own Question

ase_master327
ase_master327, Shop Owner
Category: Car
Satisfied Customers: 5288
Experience:  +15 years experience on imports and domestics. Bumper to bumper diagnosis & repair.
907259
Type Your Car Question Here...
ase_master327 is online now
A new question is answered every 9 seconds

exact location crankshaft position sensor, 91 olds 3.1ltr

Resolved Question:

exact location crankshaft position sensor, 91 olds 3.1ltr t&what needs to be removed to acess sensor
Submitted: 6 years ago.
Category: Car
Expert:  ase_master327 replied 6 years ago.
  1. It is on the bottom front of the engine behind the harmonic balancer. Here are instructions for changing it.

     

  2. Disconnect the negative battery cable.

  3. Remove the serpentine drive belt from the crankshaft pulley.

  4. Raise and safely support the vehicle.

  5. Remove the right front wheel and tire assembly and the right inner fender access cover/splash shield.

  6. Using a 28mm socket, remove the crankshaft harmonic balancer retaining bolt.

  7. Remove the crankshaft balancer, using a puller if necessary. Do NOT pry on it, it should slide right off.

  8. For 1992-99 vehicles, remove the CKP sensor shield.

Click image to see an enlarged view
Fig. 6: If so equipped, remove the crankshaft position sensor shield


  1. Unplug the sensor electrical connector.

  2. For 1987-91 vehicles, perform the following:

    1. Remove the sensor and pedestal from the block face.

    2. Remove the sensor from the pedestal.

  3. For 1992-99 vehicles, remove the sensor from the block face.

To install:

  1. For 1987-91 vehicles, perform the following:

  2. Loosely install the crankshaft sensor on the pedestal.

  3. Position the sensor, with the pedestal attached, on crankshaft sensor installation tool J 37089 or equivalent.

  4. Install the bolt to hold the pedestal to the block face, then tighten to 14-28 ft. lbs. (20-40 Nm).

    Click image to see an enlarged view
    Fig. 7: Position the crankshaft sensor tool on the crankshaft


    Click image to see an enlarged view
    Fig. 8: Insert the crankshaft sensor tool into the harmonic balancer


  5. Tighten the pedestal pinch bolt to 30-35 inch lbs. (3-4 Nm).

  6. Remove the special tool.

  7. Place the crankshaft sensor tool on the crankshaft balancer and turn. If any vane on the harmonic balancer touches the tool, replace the balancer.

  1. For 1992-99 vehicles, install the CKP sensor on the block.

    1. Install the retaining bolts and tighten to 14-28 ft. lbs. (20-40 Nm).

    2. Install the crankshaft position sensor shield.

    3. Attach the sensor electrical connector.

  2. Install the balancer on the crankshaft.

  3. Tighten the crankshaft bolt to 200-239 ft. lbs. (270-325 Nm) for 1987-91 vehicles. For 1992-99 vehicles, tighten to 110 ft. lbs. (150 Nm), plus an additional 7° rotation.

  4. Install the inner fender shield and the right tire and wheel assembly.

  5. Carefully lower the vehicle.

  6. Install the serpentine belt.

  7. Connect the negative battery cable.

ase_master327, Shop Owner
Category: Car
Satisfied Customers: 5288
Experience: +15 years experience on imports and domestics. Bumper to bumper diagnosis & repair.
ase_master327 and 8 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