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 Mechanic Martyn Your Own Question

Mechanic Martyn
Mechanic Martyn, Australia Car Mechanic
Category: Australia Car
Satisfied Customers: 987
Experience:  Advanced trade certificate in Automotive engineering
17982882
Type Your Australia Car Question Here...
Mechanic Martyn is online now
A new question is answered every 9 seconds

Ford laser: I have a laser 2000 model .1.6 , auto trans when

Resolved Question:

I have a laser 2000 model .1.6 , auto trans when going to change to third jumps in to limp home mode and flashes hold light . only does this first time in mornings . After switching off and restarting straight away all good for the rest of day . have changed oil and filter and three large solenoids in pan .
Submitted: 1 year ago.
Category: Australia Car
Expert:  Mechanic Martyn replied 1 year ago.
Hello - I would actually say the problem is more likely to be a faulty throttle position switch not a fault in the transmission. The TPS (throttle position switch) wears out and what happens is the vehicle just doesn't know where your foot is all it has is the speed sensor to go by and the gear position so it just defaults to limp home mode.
When you restart you probably move the throttle enough to reset it and away you go - it's common across a whole range of cars. Lots of Auto's get rebuilt only to find it's this problem.
regards
Mechanic Martyn
Customer: replied 1 year ago.

thanks for reply . phone lines have been down last couple of days . Thanks telstra. sorry about delay to reply . I will try one today and let you know results . fingers crossed

Customer: replied 1 year ago.

I have just fitted new tps with no change . do you think it could be computer related . also got code out of it , eventualy, it was P0730 and P0328 (knock sensor). Hard to think its mechanical with after switch off problem goes . have tried warming up before driving with no difference
. any other suggestions would be appreciated

Expert:  Mechanic Martyn replied 1 year ago.
OK the p0730 code gives us - surprise suprise - "Incorrect gear ratio"
the causes are listed as.
1. wiring
2. TR sensor/switch
3. shift solenoids
4. transmission mechanical fault.

The next this is to check the transmission range sensor/ switch - their is a process for adjusting these things to but if you mark the old one and line up a replacement one with the new marks things usually go well - I recall there is some tool needed.....but it should be ok to line it up and go from there.
Check all the wiring loom down to the gearbox - all it takes is one slightly poor connection - same as for the tps and things go wrong.
Check to see if the TR switch isn't leaking oil out - if it is then it will be full of dirty contacts.
regards
Mechanic Martyn
Mechanic Martyn, Australia Car Mechanic
Category: Australia Car
Satisfied Customers: 987
Experience: Advanced trade certificate in Automotive engineering
Mechanic Martyn and other Australia 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
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
 
 
 

Meet The Experts:

 
 
 
  • Curtis

    Australia Car Mechanic

    Satisfied Customers:

    1605
    Qualified Automotive Mechanic, LPG & Airconditioning Diagnostic Technician.
< Last | Next >
  • http://ww2.justanswer.com/uploads/TechCurtis/2010-10-21_204813_jaavatar.png Curtis's Avatar

    Curtis

    Australia Car Mechanic

    Satisfied Customers:

    1605
    Qualified Automotive Mechanic, LPG & Airconditioning Diagnostic Technician.
  • http://ww2.justanswer.com/uploads/GL/GlennBradley/2012-9-1_102754_DSCF3324c.64x64.jpg Glenn Bradley's Avatar

    Glenn Bradley

    Australian Car Mechanic

    Satisfied Customers:

    664
    Ex Transmission Shop Owner, Driveline Specialist, 30+ years in the Australian Automotive Industry
  • http://ww2.justanswer.com/uploads/BR/Brogs70/2011-5-4_13942_weddingpicsfromMelandVicki004.64x64.jpg Scott B's Avatar

    Scott B

    Australia Car Mechanic

    Satisfied Customers:

    478
    Qualified Automotive Mechanic, Service Manager & Proprietor 20+ years
  • http://ww2.justanswer.com/uploads/Technopro/2010-04-14_162248_Arm_JA.jpg Technopro's Avatar

    Technopro

    Australia Car Mechanic

    Satisfied Customers:

    129
    15+ years of experience in Automotive Repair Techniques and Diagnosis Expert.
  • http://ww2.justanswer.com/uploads/MA/MarkBarnes1967/2011-8-13_93816_MarkakaTOMUCH.64x64.JPG Mark's Avatar

    Mark

    Mechanic

    Satisfied Customers:

    571
    26 Years as a Vehicle Mechanic in Australian Military
  • http://ww2.justanswer.com/uploads/35/350matt/2012-6-7_182356_matsavatr.64x64.jpg Matt's Avatar

    Matt

    Engineer

    Satisfied Customers:

    437
    Automotive Engineer for 20 years, BEng hons degree,
  • http://ww2.justanswer.com/uploads/gemmechanic/2009-05-04_110543_dsc07268.jpg Mechanic Martyn's Avatar

    Mechanic Martyn

    Australia Car Mechanic

    Satisfied Customers:

    303
    Advanced trade certificate in Automotive engineering
 
 
 

Related Australia Car Questions

Chat Now With An AU Auto Mechanic
Mechanic Martyn
Mechanic Martyn
Diesel Mechanical Teacher
311 Satisfied Customers
Advanced trade certificate in Automotive engineering