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 mike c Your Own Question

mike c
mike c, toyota master diagnostic technician
Category: Toyota
Satisfied Customers: 620
Experience:  toyota certified master diagnostic technician ase and hybrid certified
Type Your Toyota Question Here...
mike c is online now
A new question is answered every 9 seconds

My car is making a rattling noise

Resolved Question:

I have a 1998 Toyota Corolla (not sure about the engine).

The car is making a grinding/rattling noise when I push the gas pedal. The sound doesn't get any louder at higher speeds and it doesn't make the sound when I let off the gas or brake or push the gas pedal from the parked position.

The noise seems to be coming only from the left front driver side area. I was told my left inner tie rod had some play to it when I got my tires aligned. Is that what's making the sound or is it something else?

Submitted: 6 years ago.
Category: Toyota
Expert:  mike c replied 6 years ago.

Does the noise change while turning left or right? Does turning affect the noise at all?

Customer: replied 6 years ago.

I haven't noticed a difference when I turn. Just whenever I apply the gas pedal while in drive, it makes that sound. When I had the car in park and applied pressure to the pedal, however, it didn't make that sound so I'm guessing it's not the engine or anything under the hood. It sounds like its coming from underneath and only makes noise while in motion (but not when coasting or braking, just when I apply pressure to the gas pedal).

Expert:  mike c replied 6 years ago.

If it was a loose rack end the noise would happen over bumps on or off the gas pedal, hitting a dip in the road, bumps, etc. So, I would rule that out by your description.

It is possible that this is a loose and rattling heat shield on the exhaust. Possibly an axle or a gas ping. Try these things:

1. If possible try driving the car into a turn both left and right turn while accelerating and see if the noise changes. You may want to do this in an empty parking lot.

2. Does the noise happen even on a cold engine right away as soon as you press the gas pedal?

3. If possible, put the car in drive and hold one foot tight on the brakes and give a little gas with the other foot and see if you hear the rattle. You may want to do this also in an empty parking lot.

Let me know what happens on any of these. If you don't feel comfortable doing 1 and 3 just let me know on question 2.

Customer: replied 6 years ago.

I realized that it actually doesn't happen on a completely cold engine. It takes a minute or two to start up when I first pull out at low speeds. I didn't have my foot on the brake while I was in park, but I just pushed the gas pedal and heard no rattle. Turns do not change the sound.

Expert:  mike c replied 6 years ago.

I thought you may have a heat shield rattle but generally they are worse when the engine is cold. Are you familiar with what a gas ping sounds like?

Customer: replied 6 years ago.

I don't know what that would sound like.

I also have a small thing to add on though it may or may not be related. Every once in a while (very rarely) the brakes squeak when I brake, but the brakes were just replaced so I don't understand this.

With both of these things though, are they anything serious do you think or can I go without fixing them?

Expert:  mike c replied 6 years ago.

Noises can be hard to try to describe and diagnose without actually hearing them.

I would describe a gas ping as sounding like marbles rolling around in a frying pan. When you are low on gas, try filling the tank with 5 gallons of premium fuel 92 octane and drive to see if noise changes.

As far as the brake squeak is concerned, usually that's not a safety issue. You may want to call the shop where you had the work done and at least make them aware of the fact that you are getting a squeak and see if they want you to bring the car in for a test drive.

Customer: replied 6 years ago.

I don't think that sound would describe what I hear. When I first got the car it made the sound bad, it had no fuel almost.

I filled it up and the sound then took about a minute to start up and it was quieter than before the gas tank was filled. But it still always makes the sound when I push the gas even now. Do you not think it has anything to do with the inner tie rod, which I was told has some play? The sound does seem to be coming from this area, left front.

Expert:  mike c replied 6 years ago.

I think you should take the car in for someone to at least test drive if it’s a steering issue that is causing the noise. That could be a safety issue.

I've never seen an inner tie rod end only make the noise on acceleration, but anything is possible.

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... seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like
...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
< Previous | 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:

    16 years of experience
< Last | Next >
  • Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Auto Technician

    Satisfied Customers:

    16 years of experience
  • Marty's Avatar


    ASE Certified Technician

    Satisfied Customers:

    ASE & Bosch Master Tech. 30 years experience.
  • Amedee's Avatar


    Toyota Technician

    Satisfied Customers:

    ASE Master Technician advanced level specialist. Wisconsin certified emissions state inspector
  • Anthony's Avatar


    ASE Certified Technician

    Satisfied Customers:

    ASE Master Automobile Technician with over 20 years exp. in this field.
  • Richard's Avatar


    ASE Certified Technician

    Satisfied Customers:

    Toyota tech. ASE Certified Technician
  • Skyvisions's Avatar


    ASE Certified Technician

    Satisfied Customers:

    Toyota Master Diagnostic
  • Genchi Genbutsu's Avatar

    Genchi Genbutsu

    Toyota Master Technician

    Satisfied Customers:

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