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 Randall C Your Own Question

Randall C
Randall C, ASE Certified Technician
Category: Car
Satisfied Customers: 11004
Experience:  32 years Foreign / Domestic Cars All aspects of Diag and Repair
Type Your Car Question Here...
Randall C is online now
A new question is answered every 9 seconds

1997 SAAB 900 se: 2.0 Turbo..spark..Direct ignition module..Alternator

Customer Question

I have a 1997 SAAB 900SE 2.0 Turbo with no spark. Direct ignition module was new in Dec 08. Alternator and battery were new in June 08. Just changed crank position sensor today and still no spark. Have only 9V to two of the prongs on the harness going to DIM when key is on. Coils on DIM show resistance, so I am doubting it has failed again with only 4 months run time. Not sure what to check next? Do not want to waste $700 on a new DIM if it isn't the problem. Do you know how to properly test it with a multi meter? I already removed DIM, turned over and installed all 4 spark plugs. Grounded each plug and cranked engine...no spark was evident. Could it be a voltage regulator, relay or something else?
Submitted: 5 years ago.
Category: Car
Expert:  Randall C replied 5 years ago.

Hello , although a scan tool is widley needed, this diag flow chart may help you. It is test procedure for no spark,no start condition

 

 



Symptom Of Fault .
Engine will not start.



Diagnostic Procedure .

  1. Check the ignition discharge module's ground connection
    • Connect a test lamp to battery positive (B+) and pin 6 of the ignition discharge module's connector. The test lamp should light up.

Is the test lamp on?

YES: Continue with point 2.
NO: Check and rectify the wiring, including grounding point G7P. Then continue with point 4.

  1. Check the ignition discharge module's 12 V supply
    • Connect the test lamp to pin 10 of the ignition discharge module's connector and battery negative (B-).
    • Activate one of the ignition coils by means of the ISAT scan tool. The purpose of this is to cause the main relay to operate.

The test lamp should light up.

Does the test lamp light up?

YES: Continue with point 3.
NO: Continue as described in "Fault diagnosis, main relay".

WARNING: The electronic ignition system generates up to 40,000 Volts. Such voltages can prove fatal to people with weak hearts or those who are fitted with a pacemaker. All due caution should therefore be observed when carrying out any work involving the ignition system .

IMPORTANT:
The ignition discharge module must be positioned with the ignition coils downwards during the test so that the transformer oil will provide good insulation in the high-tension part of the coils.

  1. Check the operation of the ignition discharge module

Sparks should be produced on each spark plug that is activated.

Are sparks obtained?

YES: Change the spark plug and continue with point 4.
NO: Change the ignition discharge module and continue with point 4.

  1. Final check:
    • Try to start the engine.

Did the engine start?

YES: The remedial measure taken was correct.
NO: The fault is not in the ignition system.

 

 

Randall C, ASE Certified Technician
Category: Car
Satisfied Customers: 11004
Experience: 32 years Foreign / Domestic Cars All aspects of Diag and Repair
Randall C and 13 other Car Specialists are ready to help you
Customer: replied 5 years ago.

Thanks Randall...I am unable to view the images. The information should help me once, I can view. I will accept and consider bonus once I can view.

 

Thanks

 

Customer/p>
Expert:  Randall C replied 5 years ago.
Sorry for delay . this happens sometimes. I think they actually time out. I will use an insert format and send pix shortly. LMK thanks
Expert:  Randall C replied 5 years ago.
graphicgraphicgraphicgraphic

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
  • The nearest Volvo dealer is 160 miles away. Best $15 bucks I have spent in a long time! Paul M Corpus Christi, TX
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)'s Avatar

    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