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 Dave Nova Your Own Question

Dave Nova
Dave Nova, ASE Certified Tech
Category: Toyota
Satisfied Customers: 18959
Experience:  ASE Master Certified. 25 yrs experience
11042942
Type Your Toyota Question Here...
Dave Nova is online now
A new question is answered every 9 seconds

2001 Toyota Camry: hesitated..10 seconds..idling rough..smooth..park

Resolved Question:

My 2001 Toyota Camry hesitated when first driving in the morning. After about 10 seconds or so it would go just fine. Now it is idling rough while stopped and in drive (but is very smooth running if put into park). As I accelerate from a stop it is a little slow and rough but is fine once up to 15 or 20 mph. It does seem to have a little hitch in the acceleration sometimes when going up a hill.
Submitted: 3 years ago.
Category: Toyota
Expert:  Dave Nova replied 3 years ago.
Hello and thank you for using JustAnswer. My name is XXXXX XXXXX I will do my best to assist you with your Toyota problem.

Is the check engine light on while driving?
Customer: replied 3 years ago.

Yes. My uncle had pulled some codes off of it a few months ago but he thought they indicated an issue just with tightening the gas cap. I cannot find the codes but the gas cap was not the issue....the light came right back on.

 

Expert:  Dave Nova replied 3 years ago.
Best place to start is by checking codes again. If you have no scan tool, most auto parts stores will check the codes for you. Let me know what codes you get and I can help with further diagnosis.
Customer: replied 3 years ago.
I will run up now and try to get codes. Hope to have back in 1 hour.
Expert:  Dave Nova replied 3 years ago.
Sounds good. Let me know when you can.
Customer: replied 3 years ago.

PO300

PO301

PO401

PO402

PO446

 

As I paid more attention the rough idle has seemed less pronounced following the added oil last night and it occurs in all gears including park and neutral - just maybe a little less pronounced in park or neutral. It idles at about 700 rpm's and occasionally drops down for 1/2 second or so to about 550 rpm's. The frequency seems to be random anywhere from 2 second gaps to 9 seconds between drops. I did recheck the oil this morning and it is full still so it had been light about a quart.

 

The morning hesitance in acceleration has been the longest running symptom and it seemed to occur more often when it had rained or there was a lot of dew.

Expert:  Dave Nova replied 3 years ago.
The P0300 is a generic misfire code, the P0301 code is specific for cylinder #1. Misfires under acceleration are normally due to a failing ignition system component and if the misfire is worse under humid or moist conditions, this also points to ignition related problems. You are most likely looking at bad plug wires or possibly a bad coil.

The p0401 and p0402 codes are related to the egr valve and are not the cause of your problem. The P0446 code is an emissions leak in the fuel vapor system, possibly bad gas cap or emissions solenoid, again not the cause of your problem.
Dave Nova, ASE Certified Tech
Category: Toyota
Satisfied Customers: 18959
Experience: ASE Master Certified. 25 yrs experience
Dave Nova and 2 other Toyota 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:

 
 
 
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
< Last | Next >
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
  • 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
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Auto Technician

    Satisfied Customers:

    278
    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)

    Auto Technician

    Satisfied Customers:

    278
    16 years of experience
  • http://ww2.justanswer.com/uploads/EU/eurotec/2012-6-11_13153_mpjaphoto.64x64.JPG Marty's Avatar

    Marty

    ASE Certified Technician

    Satisfied Customers:

    167
    ASE & Bosch Master Tech. 30 years experience.
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    Toyota Technician

    Satisfied Customers:

    1132
    ASE Master Technician advanced level specialist. Wisconsin certified emissions state inspector
  • http://ww2.justanswer.com/uploads/CA/caprio23/2014-4-30_201741_20121205122939.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    373
    ASE Master Automobile Technician with over 20 years exp. in this field.
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    9
    Toyota tech. ASE Certified Technician
  • http://ww2.justanswer.com/uploads/SK/skyvisions/2012-6-9_23736_JACropped3.64x64.jpg Skyvisions's Avatar

    Skyvisions

    ASE Certified Technician

    Satisfied Customers:

    11403
    Toyota Master Diagnostic
  • http://ww2.justanswer.com/uploads/genchigenbutsu/2009-05-09_003043_cimg16431.jpg Genchi Genbutsu's Avatar

    Genchi Genbutsu

    Toyota Master Technician

    Satisfied Customers:

    3425
    Toyota Certified Master Diagnostic Technician, ASE Master Technician with L1 Advanced Engine
 
 
 

Related Toyota Questions

Chat Now With A Toyota Mechanic
Dave Nova
Dave Nova
Auto Dealership Owner
512 Satisfied Customers
ASE Master Certified. 25 yrs experience