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 Steve Your Own Question

Steve
Steve, Auto Service Technician
Category: Car
Satisfied Customers: 5494
Experience:  25+ yrs experience as a professional working technician; ASE L1 master technician
157173
Type Your Car Question Here...
Steve is online now
A new question is answered every 9 seconds

99 mitsubishi galant: the timing belt..valves..jerks..speeds

Resolved Question:

I have a 99 mitsubishi galant, the timing belt was just replaced aas well as four bent valves. Whe i got it back the car seems to be alot louder and jerks at speeds of 65+mph when i let off the gas. Also if i step on the gas to the floor it redlines before it will shift and take off. Why are these problems occuring? It ran fine before the timing belt went out and afteri had i replace it''s been running like crap. thanks Jon
Submitted: 6 years ago.
Category: Car
Expert:  Steve replied 6 years ago.

Hello!

how does it idle? Is the idle smooth, or does it seem rough or unstable?

Customer: replied 6 years ago.
Reply to Steve7654's Post: the idle is fine but it does seem to run alittle higher in rpm's than it use to. At 70mph it runs around 3000rpms.
Expert:  Steve replied 6 years ago.

Well, if it were an engine related issue then idle quality should be affected here. If the cam timing was incorrect due to the belt being installed incorrectly the idle would surge. If the new valves were leaking, or if one of the old ones was damaged and missed during the repair, it would cause the idle to be rougher than normal. So, since teh idle quality is OK it is likely that the engine is operating normally.

All of the symptoms you describe are consistent with a fault related to the transmission. Why they are suddenly evident after an engine repair is anyone's guess... it could be that something transmission related was disturbed during the engine repair, but it is possibly coincidence.

Is your "check engine" light on?

Steve, Auto Service Technician
Category: Car
Satisfied Customers: 5494
Experience: 25+ yrs experience as a professional working technician; ASE L1 master technician
Steve and 9 other Car Specialists are ready to help you
Customer: replied 6 years ago.
Reply to Steve7654's Post: no there are no lights on. do you think it would help if i took it in and them hook it up to a computer, or would that have nothing to do with it.
Expert:  Steve replied 6 years ago.

If the check engine light was on, that would be an indication also that the engine was running abnormally, but since it is not that indicates the engine is not likely to be the cause of the problem here. If the light is not on, there will be no fault information stored in computer memory.

From the description, it sounds as if your problems are originating in the transmission. I would suggest starting by checking the fluid level. IF the fluid is full, then you will need to take teh vehicle in to a mechanic that perfroms transmission disgnosis and repairs to be checked (this is a specialty that not all shpps do. You may want to seek out a transmission specialty shop, or try the Mitsubishi dealer which will ahve a trained transmission tech on staff). Checking the transmission for proper operation will involve perfroming some hydraulic testing (connecting a hydraulic pressure gauge to verious pressure ports on the transmission to check to see that internal mechanical components are getting the proper pressure to actuate) and also using scan equipment to check transmission control system operation. Since this type of testing does require special test equipment to check to see where the problem may be occurring, it is not really something you can check or repair yourself at home in the driveway (other than checking to make sure the fluid level is full).

Customer: replied 6 years ago.
would that cause the carr to run louder than it use to? Why would it come out of the shop running so much louder?
Expert:  Steve replied 6 years ago.
The louder sound is most likely he result of an exhaust leak, and unrelated to the other issues youa re describing. The exhaust must be disconnected from the engine to remove teh head for the valve repairs. If they did not assemble the exhaust correctly, or reinstalled old worn out exhaust parts, that would result in a leak and a louder sounding engine noise. It would be very unprofessional to send teh car back to the customer with an exhaust leaka fter a major repair, unless repair cost was an issue.

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