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Rattling noise when my engine is running?

Tiny
LYZZOVER
  • MEMBER
  • 2007 TOYOTA CAMRY
  • 2.4L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 134,000 MILES
There is a rattling noise when my engine is running and sometimes it takes a minute for my car to start. There is a kind of hesitation. Could this be a problem with the alternator or could it be something else?
Wednesday, February 22nd, 2017 AT 10:40 AM

25 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,910 POSTS
What do you mean by "it takes a minute to start"? Are you cranking the engine that long before it starts to run? Do you have to wait for a minute for the dash lights and other power to turn on?
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Wednesday, February 22nd, 2017 AT 2:44 PM
Tiny
LYZZOVER
  • MEMBER
  • 2 POSTS
When I crank it, the engine won't start for about 20 seconds. I can hear it trying to rev, but it doesn't. The lights and radio all work fine and start when I turn the key, but it's just the engine. I just replaced my battery a few months ago and I don't believe it is an issue with that. Once it is running, it seems to work fine. There is just that rattling noise.
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Friday, February 24th, 2017 AT 8:30 AM
Tiny
CARADIODOC
  • MECHANIC
  • 33,910 POSTS
You're listing two different symptoms that do not appear to be related, at least at this time. For the long crank time, a real good suspect is fuel pressure is bleeding off when the engine is off. That pressure should hold for days or weeks. You may be able to get a clue if you turn the ignition switch to "run", wait a couple of seconds, turn it off, then turn it to "crank". Each time you turn the switch on, the fuel pump will run for about one second. It won't continue running until you start cranking the engine, and then, since the battery's voltage is drawn down by the starter, the fuel pump can run too slowly to build the fuel pressure needed for the engine to run.
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Friday, February 24th, 2017 AT 7:28 PM
Tiny
JERLWAYNE
  • MEMBER
  • 3 POSTS
  • 2004 TOYOTA CAMRY
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 119,000 MILES
My car recently developed a loud gravelly sound. It is continuous and doesn't appear to change with acceleration. It doesn't appear to affect performance in any way. Any suggestions?
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Could be an exhaust gasket somewhere or the brakes.
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Or a wheel bearing.

Does it happen all the time, or just when driving?
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
JERLWAYNE
  • MEMBER
  • 3 POSTS
All the time. While idling and while driving. Seems to be coming out of the engine.
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Sounds like an exhaust gasket leaking.
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
JERLWAYNE
  • MEMBER
  • 3 POSTS
  • 2004 TOYOTA CAMRY
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 119,000 MILES
My Camry engine recently developed a loud gravelly sound. It is continuous, doesn't appear to change with acceleration, and doesn't appear to impact performance. Any idea what the problem could be?
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
It sounds like a bearing noise, but it should increase with engine speed, remove drive belts and run engine to see if the noise is gone, start here.
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
BRANDONSTRADER
  • MEMBER
  • 2 POSTS
  • 2004 TOYOTA CAMRY
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 90,000 MILES
My girlfriends 04 camry started making a rattling noise the other. I took a look under the hood and notice it was making noise near the alternaor. So I took the serpentine belt off spun all the pulleys and all were free no seizing except the alternator. It was sticking alittle so I replaced it plus it was squealing a bit. So I put it back together and the rattling continues. The power steering and ac seem to be fined. Not sure where the noise is coming from anymore or a solution. Thankyou for your responses in advance.
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Maybe the belt how old over30K needs replaced plys break in belt will cause ratling noise much like a bearing
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
BRANDONSTRADER
  • MEMBER
  • 2 POSTS
I got a good look at it when I was checking the pulleys. I took it all the way off and inspected it and it looked pretty good. I know its got at least 30k on the belt. Does it still need to be replaced routinely if its not cracked and the grooves look good. Thanks for the response too.
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Yes routine replacement at @30K good thing the belt plys inside you can't see can break
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
MOAZZAM A MAZHAR
  • MEMBER
  • 1 POST
  • 2003 TOYOTA CAMRY
Noises problem
2003 Toyota Camry 4 cyl Automatic 25000 miles

The weather is cloudy. After engine wash engine sound increased. Specially at starting it is too much. Can it be silencer issue. May be hen car was lifted, they damaged the silencer. Before the car was sound less almost. Now much noise coming inside while driving. I feel very upset. Two days passed since wash. 40 miles driven after wash.
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
What kind of noise is it making? Ticking, squeling, grinding? This information is vital for us to better assist you with the situation. Thanks.
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
MAYMICHAEL
  • MEMBER
  • 2 POSTS
  • 2002 TOYOTA CAMRY
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 54,000 MILES
My engine makes a consistent "clugging" noise while it is running. Do you know what the problem could be?
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Clugging? Check all fluids, belts to be sure they are aligned properly. Does this clugging change with engine speed?
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
MAYMICHAEL
  • MEMBER
  • 2 POSTS
Clugging is what it seems to sound like (clug, clug, clug, etc) and you only really notice it when you are outside the car. It seems like it is coming directly from the engine block and the noise is different than the normal smooth engine sound. The fluids and belts look good and it appears the noise remains constant as engine speed changes. Any other ideas?
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Has any work been done on the timing belt/water pump? See if the noise is possibly coming from the front of the engine and transmitting through the block
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Wednesday, January 8th, 2020 AT 12:40 PM (Merged)

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