. Help diagnose strange noise in drivetrain
#249285
03/10/09 09:58 AM
03/10/09 09:58 AM
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Joined: Dec 2003
Posts: 36,840 South San Francisco, Californi...
MidPenMopar
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Just recently I have noticed a really awful sound coming from my roadrunner's drive train. All has been well and the car has been running perfectly for months. Just last week I noticed when I accelerate I get an awful noise like nuts and bolts falling off the car. I stopped and checked on the road and all was well. This has happened a few times as of late and I thought maybe the fan was loose and hitting the radiator as that is what it sounds like, but all is tight and no problems there. Yesterday it made that same noise right at start up too, but only for a second and went right away The car runs perfect and drives fine so it's a very intermittent noise at best. I have crawled underneath and checked and retightend everything I can think of. I thought something might be loose and rattling around. The noise is like rocks being thrown in the fan. So any ideas on what to look for next? Like I said the car operates perfectly except for once in awhile when it makes that ugly noise only on hard acceleration or at startup. Thanks for any ideas.
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Re: . Help diagnose strange noise in drivetrain
[Re: MoparforLife]
#249287
03/10/09 10:14 AM
03/10/09 10:14 AM
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Joined: Dec 2003
Posts: 36,840 South San Francisco, Californi...
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Check your torque converter bolts. Did you take down the driveshaft and check the u joints??
No i have only visually checked the driveshaft and u-joints and all looked fine. I recently had a new 4-speed automatic installed though and i got all new u-joints and a new driveshart. I can pull the inspection cover and check the bolts on the torque convertor if that is what you mean.
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Re: . Help diagnose strange noise in drivetrain
[Re: MidPenMopar]
#249288
03/10/09 10:30 AM
03/10/09 10:30 AM
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Anonymous
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Anonymous
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I've had cat. converters get noisy when they die, I wonder if mufflers do the same thing?
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Re: . Help diagnose strange noise in drivetrain
[Re: ]
#249289
03/10/09 10:34 AM
03/10/09 10:34 AM
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Quote:
I've had cat. converters get noisy when they die, I wonder if mufflers do the same thing?
You know that crossed my mind too. I have the DYNOMAX mufflers that came with my TTI exhaust system. Think one of them came apart inside??
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Re: . Help diagnose strange noise in drivetrain
[Re: MoparforLife]
#249290
03/10/09 10:36 AM
03/10/09 10:36 AM
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Anonymous
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Anonymous
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Torque converter bolts for sure, had the same thing once! Make sure you loc-tite them down too or it will keep coming back!
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Re: . Help diagnose strange noise in drivetrain
[Re: 340727dart]
#249296
03/10/09 11:25 AM
03/10/09 11:25 AM
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Joined: Jan 2003
Posts: 25,200 Upper Midwest
MoparforLife
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Quote:
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I've had cat. converters get noisy when they die, I wonder if mufflers do the same thing?
You know that crossed my mind too. I have the DYNOMAX mufflers that came with my TTI exhaust system. Think one of them came apart inside??
Stu, you need to get rid of those DynoMax mufflers and get some of sunroofcuda's new mufflers.
Yes baffles do come loose in mufflers and can make a lot of rattling noises.
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Re: . Help diagnose strange noise in drivetrain
[Re: 340727dart]
#249305
03/10/09 07:34 PM
03/10/09 07:34 PM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
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Looks like the nose off a Mini-starter...
Hmm. Now that you mention it, that piece on the left looks like part of a starter.
And the piece on the right I'm waiting for someone from Keisler to ID...
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Re: . Help diagnose strange noise in drivetrain
[Re: 1_WILD_RT]
#249307
03/10/09 08:11 PM
03/10/09 08:11 PM
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Yep it's the front of the mini starter that broke off. It's got probably less than 50 start ups and it already busted. Is nothing made well anymore?? Thanks guys for the advice as you pointed me in the right direction of where to look. Stu
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Re: . Help diagnose strange noise in drivetrain
[Re: 78D150CLUB]
#249311
03/10/09 10:50 PM
03/10/09 10:50 PM
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Quote:
My son just had the same thing happen on his car, but the whole nose of the starter broke off, right back to the mounting. Jammed in the ring gear and he thought the motor had seized up.
Oh goody so now it's a class action thing!!!!!!!!!! Where are the mini starter tar and feather smiles!!
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Re: . Help diagnose strange noise in drivetrain
[Re: aarcuda]
#249314
03/11/09 10:38 AM
03/11/09 10:38 AM
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whats the round piece? What part of the mini starter is that?
and lets see a picture of the broken starter!
Any ideas why it broke? maybe it had been dropped before it was installed??? If its some sort of alignment issue with the ring gear, the next one could break just as fast.
btw, how does the ring gear look?
The piece that broke off is the front end of the mini starter and from what i can see via the inspection area there is no damage to the ring gear luckly. The shop that installed the Keisler transmission is going to replace the mini starter in a few days as they sold it to me. I have no idea why it would break other then a bad casting on the part of the manufacture of the starter. Hopefully yhe next one will not do this again. I drive the roadrunner like a little old lady so i know the breakage was not from any abuse on my part.
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Re: . Help diagnose strange noise in drivetrain
[Re: 78D150CLUB]
#249316
03/11/09 01:32 PM
03/11/09 01:32 PM
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Joined: Mar 2003
Posts: 15,478 the boonies
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Hey Stu i think you have a bolt or a nut loose somewhere...perhaps on the starter
More likely in my head.
I was thinking the nut behind the wheel might be a bit loose, too.
My son just had the same thing happen on his car, but the whole nose of the starter broke off, right back to the mounting. Jammed in the ring gear and he thought the motor had seized up.
did you sons car have a keisler tranny? johnahah may be on to something
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Re: . Help diagnose strange noise in drivetrain
[Re: JohnRR]
#249317
03/11/09 05:33 PM
03/11/09 05:33 PM
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Ok i took off the Torque Converer inspection plate and found these parts rattling around in there. What are they??
stu do those 2 pieces fit together ?
I'm going out on a limb and say the Kieselr trans does not have a pilot for the snout of the starter to fit it , so I would be curious to know WHY that broke off
Yes John, the two pieces do fit together to make the nose cone of the starter. I have no idea why it broke but the shop who did the tranny install put the ministarter in at the same time. They are sending a tech over to my place right now to see it.
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Re: . Help diagnose strange noise in drivetrain
[Re: MidPenMopar]
#249318
03/11/09 05:52 PM
03/11/09 05:52 PM
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Joined: Jul 2007
Posts: 3,712 Sacramento, Ca
Darius
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Glad you found the problem Stu. I was going to suggest removing all the empty cans from the trunk and see if that would have made a difference.
Driving modern convenience in classic beauty
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Re: . Help diagnose strange noise in drivetrain
[Re: aarcuda]
#249322
03/11/09 08:11 PM
03/11/09 08:11 PM
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Joined: Jul 2006
Posts: 1,475 Ontario, Canada
78D150CLUB
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No. it,s a stock Brand X. The starter is very similar to the minis, though.
It may be as John says, that the starter is not fitting correctly in the bell housing. If it's being forced out of alignment slightly when it's mounted it could put too much stress on the nose of the starter.
If it has too much opening, the torque of the starter may cause the pilot end of the snout to flex away from the ring gear and stress the housing in the opposite direction.
Either way could result in a fracture over time.
I want to die like my Grampa, peacefully, in his sleep. Not screaming in terror like his passengers.
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Re: . Help diagnose strange noise in drivetrain
[Re: MidPenMopar]
#249326
03/11/09 10:45 PM
03/11/09 10:45 PM
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Joined: Mar 2003
Posts: 15,478 the boonies
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One more vote for torque converter bolts. Arno
Hey Arno i guess you missed the part where it turned out to be a broken mini starter.
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