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Rattling Noise& Dies at in Idle
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NoviceCarJunky
New User
Feb 18, 2013, 4:42 AM
Post #1 of 10
(16008 views)
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Rattling Noise& Dies at in Idle
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I recently purchased a 2000 Pontiac Grand Prix GT 3.8L with about 91k miles and I decided to test the performance of the engine, which I did. After that I reached a stop light and then the car died, So I took out the keys then put them back in the ignition and turned the car but it struggled to start and after I began to accelerate once I had re-started the car but it made a rattling noise and once again died on me once i reached a stop sign. It runs well for a couple minutes however once the engine reaches higher temperatures it rattles and dies once i stop the car.
I would very much appreciate it if anyone can please help me understand what may be causing the rattling and dying at stops. Also if a cause is found I would be thankful for a cost range for repairs thank you very much.
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Discretesignals
Ultimate Carjunky
/ Moderator
Feb 18, 2013, 5:56 AM
Post #2 of 10
(15996 views)
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Re: Rattling Noise& Dies at in Idle
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Use a fuel pressure test gauge and see what the fuel rail pressure is when the engine is stalling out.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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NoviceCarJunky
New User
Feb 18, 2013, 6:49 AM
Post #3 of 10
(15969 views)
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Re: Rattling Noise& Dies at in Idle
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I dont have access to a shop now but I will definitely check it out and i"ll get back to you on that. Thank You
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Feb 18, 2013, 7:28 AM
Post #4 of 10
(15960 views)
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Re: Rattling Noise& Dies at in Idle
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Do test as DS just suggested. Mostly I think the noise and stalling at the same time is probably just VERY low RPM right before it quits but might be an accessory on the belt system dragging/binding more than it can compensate for. Just a thought. If very cold where you are A/C compressor should be off even when it normally would be on if using defog/defrost momentarily. If much colder than say 20F it really should stay off no matter what. Try just shutting it down entirely as a test or take belt of for a binding accessory?
T
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Discretesignals
Ultimate Carjunky
/ Moderator
Feb 18, 2013, 7:30 AM
Post #5 of 10
(15956 views)
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Re: Rattling Noise& Dies at in Idle
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Those engines will spark knock as they are stalling out if fuel pressure dies off too.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Feb 18, 2013, 7:31 AM)
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Feb 18, 2013, 8:02 AM
Post #6 of 10
(15951 views)
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Re: Rattling Noise& Dies at in Idle
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DS - I haven't known of many engines that don't slowly (seems the case here) die out and make some odd noises. Spark knock would certainly be one of them as you know this one does that.
I just think cold right now as it quickly shot from the 50s daytime to a cold snow and was just slightly below zero last night here. Nothing real new but I'm forever amazed that any vehicle can take such quick extremes and behave -- Tom
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NoviceCarJunky
New User
Feb 18, 2013, 12:15 PM
Post #7 of 10
(15934 views)
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Re: Rattling Noise& Dies at in Idle
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Thanks both of you i will be sure to check it out soon after my classes. But i was wondering is it unusual for an engine to make rattling noises while accelerating?, on top of the dying at in idle?
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Feb 18, 2013, 1:28 PM
Post #8 of 10
(15922 views)
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Re: Rattling Noise& Dies at in Idle
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"Rattling while accelerating" -- bet it's unrelated to it dying out on you but that could be an exhaust heat shield not really anything to do with how it runs if so. Gotta go hunting around for that one. Engine off just tap on tailpipe with a rubber hammer or better yet check them all if loose or spot welds coming apart. Common but a zillion things can make noises,
T
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Urbankid
New User
Nov 17, 2013, 10:39 AM
Post #9 of 10
(15304 views)
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Re: Rattling Noise& Dies at in Idle
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This is the exact same thing that is happening to me. Same story exactly but I have the Chrysler Concorde LXI 2003. The knocking fades but not completely gone at higher rpms and gears, if idled it dies in a second or two. Over heats quickly... I've been told to check the fuel to make sure its not dirty, the spark plugs, build up on the cylinders, and no back up in the fuel lines. I have a gut feeling when I over heated I blew the head gasket... It would cause the no pressure mentioned earlier, causing the knock and the over heating. I hope its cheap like the spark plugs or just buy something to put in the gas take to help burn some bad fuel. But If I find out before you ill let you know!
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Hammer Time
Ultimate Carjunky
/ Moderator
Nov 17, 2013, 12:09 PM
Post #10 of 10
(15294 views)
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Re: Rattling Noise& Dies at in Idle
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Urbankid, Please read the FORUM RULES before posting.
This thread is nearly a year old.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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