Hard rattle at idle and decreases when eng r p m is raised
How is the engine oil ? when was it last changed as old oil is less effective , try an oil and filter change , but a hard rattle as you describe it may be something ,not more serious , but maybe a loose drive belt or some thing that when engine revs increase's it becomes noticable though is still there ,if oil change makes no difference have a good listen around engine also underneath to try to narrow down location , hope this helps keep me posted if you wish
SOURCE: Rattle/Vibration from front of vehicle when idling at stop
Hi and welcome to FixYa. Please try this:
GO out to the car, and lift up on the hood. Does it raise a bit and rattle? If so;
Open the hood, and look at the perimeter of the front radiator support. You will see 2 small rubber thingys, that look like that they are screwed onto the metal that is holding the radiator. Unscrew them a little, and close the hood. Pull up on the hood and see if the rattle goes away. If not, repeat unscrewing the rubber things until the lift disappears.
A FixYa rating (4 blue diamonds) would be greatly appreciated for my assistance.
SOURCE: 2002 Toyota Camry stalls out after i disconnected
Hello. Welcome to FixYa. Please allow me to assist you.
What you have is this: Disconnecting the battery caused your car's computer to lose its 'base idle' parameters. This info is kept in the computer, but, removing power to the computer allows the info to be erased, so to speak.
This is, unfortunatly, a normal condition, and, easily rectified.
What you need to do: Get in the car, start it up, and drive it; simulating stop/start city traffic, and then take it out on the highway, hit passing gear a few times, pull off, and let it idle 30 seconds and repeat highway speed, and passing gear a few more times, then simulate city traffic again. You might need to apply a slight bit of gas during the idle periods of the drive. If you do it right, you can reset the base idle parameter under10 minutes.
If you have any questions, please feel free to get back to me via reposting.
Thanks for choosing FixYa for assistance today.
SOURCE: when i start my 1997 toyota rav 4 it makes a loud
without being there to listen to it then it is going to be hard to say what the problem is......but since my 20 plus yrs working on toyota and lexus and depending on the mileage and whether or not you have ever replaced the timing belt......i would first start by checking the timing belt because when the motor is cold the rubber on the belt gets hard and if the belt is streched when first started it will start flapping and will slap against the timing cover and as it warms up the rubber on the belt softens up and the noise will reduce to a less noticeable sound......i have also the wrist pin bushings and the pins themselves that are connected to the pistons make this noise and also if the oil rings are sticking it will leave the pistons loose in the cylinder wall and as the motor warms up the noise will go away.....i hope that this info will help and if you need anymore info let me know with more detail.....also if you could let me and fixya know if i was able to help you in any way and a comment and a thumbs up would be greatly appreciated....thanks and good luck.......have a blessed day...........
SOURCE: 2008 Corolla that has a rattle noise in the engine compartment
I would check exhaust system for loose heat shields or bracket.
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