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 Shawn Your Own Question

Shawn
Shawn, Auto Service Technician
Category: Ford
Satisfied Customers: 3756
Experience:  16 years experience Ford,Nissan and Honda dealership in all areas
Type Your Ford Question Here...
Shawn is online now
A new question is answered every 9 seconds

1998 ford contour engine wants to accelerate every few seconds

Customer Question

1998 ford contour engine wants to accelerate every few seconds
Submitted: 3 years ago.
Category: Ford
Expert:  Shawn replied 3 years ago.

Shawn :

Hi, Thank you for asking your question on JustAnswer, my name is XXXXX XXXXX X will be assisting you today with your question.

Shawn :

-Does the problem occur while drivig?

Shawn :

Or at idle, sitting still?

Shawn :

Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.

Customer:

it happens at all times

Shawn :

Is the check engine light illuminated?

Customer:

on on occasionly

Customer:

only on occasions

Shawn :

Thank you for the reply.

Shawn :

The most common cause of the problem you are having is a sticking or defective IAC (Idle Air Control) valve. Before replacing any parts I do recommend proper testing first. If you need I can send the test procedures as well as replacement instructions.

Shawn :

  • Perform the following preliminary checks:

    • Vacuum leaks.

    • Throttle plate and linkage.

    • Speed control linkage binding/sticking.

    • Intake air tube (leaks).

    • Proper sealing of intake manifold and components attached to intake air (such as the EGR valve or IAC valve).



Customer:

would it have anything to do with the cruise control or computer?

Shawn :

Is the check engine light illuminated?

Customer:

no

Shawn :

The most common cause of the problem you are having is a sticking or defective IAC (Idle Air Control) valve. Before replacing any parts I do recommend proper testing first. If you need I can send the test procedures as well as replacement instructions.









  • Perform the following preliminary checks:

    • Vacuum leaks.

    • Throttle plate and linkage.

    • Speed control linkage binding/sticking.

    • Intake air tube (leaks).

    • Proper sealing of intake manifold and components attached to intake air (such as the EGR valve or IAC valve).





Customer:

ok

Customer:

please send

Shawn :

Thank you for the reply.




Please give me a few moments to upload the information for you.


 


 


And Please don't forget to click on the green ACCEPT answer button, so that I may get credit for my work, thanks.


 



Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.






Expert:  Shawn replied 3 years ago.
What Happens Now?

Your chat has ended, but you can still work with your Expert to get an answer to your question if you have not yet received one.

Come back to this page at any time to see additional information from your Expert.  You will also receive an email when your question is updated.  If you want to send a message to your Expert, use the box below.

If you have already received a satisfactory answer to your question, click the Accept button above.  Experts are credited for each accepted answer they provide.
Expert:  Shawn replied 3 years ago.

Please give me a few moments to upload the information for you.


 


 


And Please don't forget to click on the green ACCEPT answer button, so that I may get credit for my work, thanks.


 



Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.

Expert:  Shawn replied 3 years ago.

HiCustomer

 

 

 

 

Thank you for asking your question on JustAnswer. The test procedures are below.

 

 

 

 

Please keep in mind Just Answer is set up on an honor system, I have sent the information you have requested, and if the answer has been helpful then Please don't forget to click on the ACCEPT button, so that I may get credit for my work. If you need more help let me know.

 

 

 

5-1 VERIFY ENGINE OPERATES AT NORMAL OPERATING TEMPERATURE

Does the engine appear to be either overheating or not reaching normal operating temperature (for applications with Engine Coolant Temperature (ECT) Sensor, the ECT PID at normal operating temperature should read between .35 (112° C/232°F) and .75 (82°C/180° F) volt)?

Yes No
GO to cooling system concerns Symptom Chart 17 for an overheating condition or Symptom Chart18 for a runs cold condition.GO to 5-2 .

5-2 PRELIMINARY CHECKS

  • Perform the following preliminary checks:
    • Vacuum leaks.
    • Throttle plate and linkage.
    • Speed control linkage binding/sticking.
    • Intake air tube (leaks).
    • Proper sealing of intake manifold and components attached to intake air (such as the EGR valve or IAC valve).

Are all checks OK?

Yes No
GO to 5-3.REPAIR as necessary. VERIFY a symptom no longer exists.

5-3 PERFORM PCM QUICK TEST

  • Go to Section 4A, Diagnostic Subroutine Step DSR1.

Is a fault indicated?

Yes No
FOLLOW Diagnostic Subroutine direction.GO to 5-4 .

5-4 CHECK FOR BASE ENGINE AIR LEAKS

  • Go to the Powertrain/Engine Group in the Workshop Manual to check for base engine air leaks (such as intake manifold gasket air leaks).

Is a fault indicated?

Yes No
REPAIR as required according to Workshop Manual direction.GO to 5-5 .

5-5 CHECK INTAKE AIR SYSTEM

  • Go to Section 5A, Pinpoint Test Step HU1 to check the intake air system.

Is a fault indicated?

Yes No
FOLLOW Pinpoint Test direction.VERIFY test results. If OK, GO to Section 5A, Pinpoint Test Step Z1 , or RETURN to Symptom Index to repair any additional symptoms.

 

 

 


Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.

Expert:  Shawn replied 2 years ago.

Please keep in mind Just Answer is set up on an honor system, I have sent the information you have requested, and if the answer has been helpful then Please don't forget to click on the ACCEPT button, so that I may get credit for my work.

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:

 
 
 
  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
< Last | Next >
  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
  • Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me. Molly USA
  • I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service. Jason V. Kirkland, WA
  • I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there. BR New Jersey
  • 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
 
 
 

Meet The Experts:

 
 
 
  • Ron

    ASE Certified Technician

    Satisfied Customers:

    20942
    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
< Last | Next >
  • http://ww2.justanswer.com/uploads/FO/fordguy4u/2011-12-17_222940_HPIM1257.64x64.JPG Ron's Avatar

    Ron

    ASE Certified Technician

    Satisfied Customers:

    20942
    23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka- Moose)'s Avatar

    Chris (aka- Moose)

    Ford Technician

    Satisfied Customers:

    22382
    16 years experience with Ford.
  • http://ww2.justanswer.com/uploads/JM/jmcdo28/2012-2-23_01655_resized.64x64.jpg John Mc's Avatar

    John Mc

    Ford Technician

    Satisfied Customers:

    5493
    19 years Ford Lincoln Mercury experience
  • http://ww2.justanswer.com/uploads/wmarti7/2009-4-18_04332_Avatar.jpg Chuck's Avatar

    Chuck

    ASE Certified Technician

    Satisfied Customers:

    1684
    33 Years Experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    1518
    12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.
  • http://ww2.justanswer.com/uploads/BA/baddad1/2014-4-1_23659_avatar.64x64.jpg Mike V.'s Avatar

    Mike V.

    Auto Service Technician

    Satisfied Customers:

    789
    25 years experience on all makes and models, Licensed NYS Inspector.
  • http://ww2.justanswer.com/uploads/lostrider/2009-9-26_23144_php4VNWAA_c1PM1.jpg lostrider's Avatar

    lostrider

    Ford Technician

    Satisfied Customers:

    2940
    ASE Master Technician, Ford Senior Master Technician,Diesel certified, ASE Master, 22 yrs FORD exp.