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Old 04-02-2007, 06:57 PM   #1
ErcWrestlr
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Join Date: Mar 2007
Location: Boca Raton, FL
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Default Grinding Noise on Startup

Well yesterday, when I started my car, I ran back inside to grab something out of my house. When I was coming back out, my car made a loud noise that sounded like a circular saw cutting wood. It lasted for 2 - 3 seconds. The car drove fine and felt okay. Then, same thing today when I started it up, another grinding noise like yesterday. Both times it happened, it was a cold start. Any ideas on what this could be? I went to the Ford dealer and they said they would need to car to look into it. But I wanna check with you guys first.

edit--> It sounded like it was coming from the middle to the front of the car. Didn't seem like the engine though.

-Eric
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Old 04-02-2007, 07:11 PM   #2
raubt
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Default RE: Grinding Noise on Startup

What's the air temperature like where you're at?

Edit: Does the noise sound like: http://members.shaw.ca/raubt/mustang_cold_rev.mp3
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Old 04-02-2007, 07:25 PM   #3
ErcWrestlr
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Default RE: Grinding Noise on Startup

No, its more like a metal grinding sound. Very high pitched and short lasting (2 - 3 seconds max). It sounds almost like abad heatshield rattle, but it doesn't do it other than a cold start.The airtemp has been in the mid 60's the last few days.
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Old 04-02-2007, 07:29 PM   #4
spuddogg
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Default RE: Grinding Noise on Startup

'... circular saw cutting wood'
On reading that the first thing that came to mind was a starter motor engaging while the engine's running.
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Old 04-02-2007, 07:43 PM   #5
billyjo
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Default RE: Grinding Noise on Startup

its the timing chain, its like a rattle. very loud. I tried to get this fixed but ford stated that it does not hurt the motor so it is fine. I think it sounds like **** and should be fixed but its one of your chains on the duel overhead cams
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Old 04-02-2007, 07:47 PM   #6
Derf00
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Default RE: Grinding Noise on Startup

Quote:
ORIGINAL: spuddogg

'... circular saw cutting wood'
On reading that the first thing that came to mind was a starter motor engaging while the engine's running.
+1 Starter motor bendix sticking. If it happens again, have them (the dealer) check it out. Could be the starter sticking or ignition switch shorting.
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Originally Posted by LostBoyz View Post
if you are getting 29mpg in your 5.0, you aren't driving it correctly
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Old 04-02-2007, 07:51 PM   #7
ErcWrestlr
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Default RE: Grinding Noise on Startup

Quote:
ORIGINAL: Derf00

+1 Starter motor bendix sticking. If it happens again, have them (the dealer) check it out. Could be the starter sticking or ignition switch shorting.
How would I have the dealer check that and make sure they actually do check it? Is there a way I could check it myself?
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Old 04-02-2007, 08:06 PM   #8
Derf00
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Default RE: Grinding Noise on Startup

You can inspect the flywheel ring gear (or flexplate) on your own, Get the front end up on jackstands, slide under, and where either the Clutch Cable (manual tranny) or kick down cable (Auto) is there is an inspection plate. Remove it and take a look. The teeth on the ring gear should be clean (probably dusty). Chips, broken teeth, missing teeth, ground spots, are all signs of the starter motor bendix sticking or the starter being engaged when the engine is running.

Dealership will try to get the problem to occur. IF they can't they'll do one of two things, say they can't duplicate the concern and give it back to you, or they will do an inspection then give it back to you. If youtake it in and they say that's not the problem, ask them how they know. They should tell you they inspected it by removing the plate.I had a starter that was going out and it would only stick once every 7 or eight times for the first few months. It got progressivly worse.
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Quote:
Originally Posted by LostBoyz View Post
if you are getting 29mpg in your 5.0, you aren't driving it correctly
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Old 04-02-2007, 09:21 PM   #9
ErcWrestlr
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Default RE: Grinding Noise on Startup

Quote:
ORIGINAL: Derf00

You can inspect the flywheel ring gear (or flexplate) on your own, Get the front end up on jackstands, slide under, and where either the Clutch Cable (manual tranny) or kick down cable (Auto) is there is an inspection plate. Remove it and take a look. The teeth on the ring gear should be clean (probably dusty). Chips, broken teeth, missing teeth, ground spots, are all signs of the starter motor bendix sticking or the starter being engaged when the engine is running.

Dealership will try to get the problem to occur. IF they can't they'll do one of two things, say they can't duplicate the concern and give it back to you, or they will do an inspection then give it back to you. If youtake it in and they say that's not the problem, ask them how they know. They should tell you they inspected it by removing the plate.I had a starter that was going out and it would only stick once every 7 or eight times for the first few months. It got progressivly worse.
Thank you. . . .this sounds like it might be my problem. I'll see what I can figure out from it.
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Old 04-02-2007, 09:51 PM   #10
NyFordTech
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Default RE: Grinding Noise on Startup

Quote:
ORIGINAL: billyjo

its the timing chain, its like a rattle. very loud. I tried to get this fixed but ford stated that it does not hurt the motor so it is fine. I think it sounds like **** and should be fixed but its one of your chains on the duel overhead cams
I have yet to see a timing chain rattle or loosen up on the new stangs, i highly doubt this is your problem. possible starter concern i would just put it up on jackstands n check the flywheel n starter teeth,i read ur post wrongbefore thought u said 2,3 min
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Old 04-02-2007, 09:51 PM
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