engine rattle when turning off the ignition
Thread Starter
Advanced
Joined: Sep 2002
Posts: 71
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From: fremont ca
engine rattle when turning off the ignition
Hi I noticed when I turn off the ignition the engine shutters and kinda rattles.
This seem to occurs after a hot shut down. I don't notice this when cool.
Any idea what the cause?
slxrti
This seem to occurs after a hot shut down. I don't notice this when cool.
Any idea what the cause?
slxrti
Racer
Joined: Nov 2002
Posts: 325
Likes: 0
From: Plymouth MN
Re: engine rattle when turning off the ignition (slxrti)
you might be experiencing "dieseling" <sp?> this happens when the octane of the fuel in not correct, i.e, high enough, try filling up at a different station.
i
i
Le Mans Master
Joined: Jan 2000
Posts: 6,725
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From: South Bend IN
Re: engine rattle when turning off the ignition (Beltrami)
you might be experiencing "dieseling" <sp?> this happens when the octane of the fuel in not correct, i.e, high enough, try filling up at a different station.
i
i
Thread Starter
Advanced
Joined: Sep 2002
Posts: 71
Likes: 0
From: fremont ca
Re: engine rattle when turning off the ignition (slxrti)
it does seem like it dieseling, but the dealer said they all rattled. hmm
By the way it occurs regardless of which brand of gas.
slxrti
By the way it occurs regardless of which brand of gas.
slxrti
Pro
Joined: Jul 2002
Posts: 627
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From: Campbell Ca
Re: engine rattle when turning off the ignition (slxrti)
It is normal if you baby the car around and not bring it up in the rpm's,you will notice it. My cure is to run the car up in the rpm's every once in a while and it will not do it. Ok I lied I bring the rpms up every chance I get :D
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Team Owner
Joined: Jul 2001
Posts: 21,391
Likes: 1,011
From: Various places in Southern California.
Re: engine rattle when turning off the ignition (Beltrami)
Modern fuel injected vehicles should not be capable of dieseling, since the fuel is shut off when you turn the key. With a carbureted engine you can get dieseling since the fuel in the carb float bowl can still be sucked into the motor.
Tech Contributor
Joined: Dec 1999
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Re: engine rattle when turning off the ignition (Duck916)
Its NOT dieseling but has alot to do with the dampening springs in the clutch disc. When the enging shuts down the engine stops firing and the pistons are slowed down by compression. When the engine spins down to a very slow speed the crank shaft will start to hunt between compression and vacuum in the cylinders and cause the dampening springs in the clutch disc to go from fully loaded in one direction to fully loaded in the opposite direction.
That my theory! :D Ive tried every technique known to man to figure it out and YES pushing in the clutch will HELP eliminate the noise. If anybody else has a theory lets hear it. It happens in my 98 and 02 ZO6.
That my theory! :D Ive tried every technique known to man to figure it out and YES pushing in the clutch will HELP eliminate the noise. If anybody else has a theory lets hear it. It happens in my 98 and 02 ZO6.
Burning Brakes
Joined: Apr 2002
Posts: 912
Likes: 0
From: Rockford IL
Re: engine rattle when turning off the ignition (Bill Curlee)
I have a similar noise. I thought it was the bearings in the drive-shaft (are there any?) I noticed it doesn't make the noise if I shut down with the clutch pedal pressed in. Pretty noisey though.
Drifting
Joined: Dec 2002
Posts: 1,766
Likes: 0
From: Sacramento CA
Re: engine rattle when turning off the ignition (redls1c5)
I have some noise when I turn off the car too.. Thought it might be something loose thats kinda what is sounds like...I will try pressin the clutch and see if thats it.. Nothing to worry about I guess right?
Safety Car
Joined: Mar 1999
Posts: 3,630
Likes: 8
From: Virginia Beach Virginia
Re: engine rattle when turning off the ignition (DSTJ99)
Very common, just press in the clutch (put the gear selector in 1st or Rev...I use Rev) and then turn the ignition off...wait a second and then release the clutch.
Drifting
Joined: Mar 2003
Posts: 1,817
Likes: 0
From: Pacific Beach CA
Re: engine rattle when turning off the ignition (slxrti)
I noticed the same thing. I will have to try using the clutch also. Another thing I noticed is the clutch is very loud. If I am sitting idle and I just press in the clutch and let it go, there is a loud sound (I think it is just the flywheel spinning up, but I just got my car Sunday and wanna be sure).
I must say, I love my 03 Vette alot more then my 02 Acura I traded in
It is an amazing vehicle :flag
I must say, I love my 03 Vette alot more then my 02 Acura I traded in
It is an amazing vehicle :flag
Drifting
Joined: Aug 2001
Posts: 1,903
Likes: 0
From: Oakhurst NJ
Re: engine rattle when turning off the ignition (elric)
I noticed the same thing. I will have to try using the clutch also. Another thing I noticed is the clutch is very loud. If I am sitting idle and I just press in the clutch and let it go, there is a loud sound (I think it is just the flywheel spinning up, but I just got my car Sunday and wanna be sure).
I must say, I love my 03 Vette alot more then my 02 Acura I traded in
It is an amazing vehicle :flag
I must say, I love my 03 Vette alot more then my 02 Acura I traded in
It is an amazing vehicle :flag
