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Old 11-16-2010, 07:28 PM   #1 (permalink)
Must See
Default Car Shudders when braking at low speed.

As of recent when I am going about ~ 5-10 mph and i put on my brakes to come to a COMPLETE STOP my car shudders/shakes then when it comes to a complete stop it stops.

Anyone know what could be the cause of this?

its a 2004 v6 automatic with 48K miles on it.
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Old 11-16-2010, 08:27 PM   #2 (permalink)
08mustang_gt
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Guarantee you its something to do with it being an automatic. And having no knowledge on autos I would be the worst person to guess what, but that sounds exactly like what it'd be.

That, or there is a brake booster problem somewhere. But it'd do it all the time if so..
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Old 11-16-2010, 09:00 PM   #3 (permalink)
krenogin
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Mine does that occasionally, not all the time. I just put my car into neutral when I come to a stop. It also keeps my voltage from dropping.
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Old 11-16-2010, 09:00 PM   #4 (permalink)
Deathdiesel
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I have the same problem actually, the rpm drops to like 530 or so and it shudders. But as soon as you give it gas it stops. Idk what it is.
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Old 11-16-2010, 09:03 PM   #5 (permalink)
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Quote:
Originally Posted by Deathdiesel View Post
I have the same problem actually, the rpm drops to like 530 or so and it shudders. But as soon as you give it gas it stops. Idk what it is.
Ill have to look at my RPM's next time.
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Old 11-16-2010, 09:19 PM   #6 (permalink)
08mustang_gt
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Damn.....I didn't know this was such a recurring problem. Fuck automatics.
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Old 11-16-2010, 09:27 PM   #7 (permalink)
krenogin
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Agreed. It's just rare to get a v6 with a stick, or else I'd have one.
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Old 11-18-2010, 08:04 AM   #8 (permalink)
v6'stang
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i didn't think sticks in sixxers were rare?

sometimes mine will do that too, i think it's just the engine almost stalling out so it shutters...idk
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Old 12-05-2010, 11:17 AM   #9 (permalink)
r3dn3ck
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I doubt this is warped rotors. The speed limit on it says that. If it were warped rotors his steering wheel would shake at all speeds when the brakes are applied and it would be most violent at speeds probably above 30mph but below 70mph.

I'm betting you have some slippy in the trans. take it to your local tranny shop and have them check it out. It seems to me that you've got something sticking which I'd bet is a clutch-pack or a sticky pressure solenoid.

From experience, it could also be something entirely unrelated... the tie rods or tie rod ends. Lemme' splain: I once had a beater with rack-n-peanut steering just like we have. I had a really worn tie rod end. When I would hit a very particular speed and then dip the brakes just a tad to set weight on the front wheels, the waves lined up and the wheel would shake violently until I got fully to a stop. It was actually the front driver side wheel that was wobbling because the tie rod end was so busticated. As soon as the weight set on the tire it would begin a dynamic toe-in toe-out oscillation.

Start by jacking up the front wheels one at a time and check for wobble in the steering by jerking on the tire at top & bottom then at front and back. If you get wiggle and clunk, that's bad.

I'm still betting on the tranny being sticky.
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Old 12-05-2010, 12:19 PM   #10 (permalink)
Recon111
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Start by turning your AOD off and try breaking, If the shaking is still there check a wheel by jacking it up and spinning it for warped rotor.

which translates in technically accurate reading to:

Start by turning your Transmission off and try fracturing, If the shaking is still there check a dictionary to figure out what the hell this means.

Last edited by r3dn3ck; 12-08-2010 at 06:48 AM..
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Old 12-05-2010, 12:24 PM   #11 (permalink)
Must See
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as of lately it has not been doing it. Ill continue to keep an eye out on it .
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Old 12-06-2010, 07:04 AM   #12 (permalink)
r3dn3ck
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Quote:
Originally Posted by Recon111 View Post
Start by turning your AOD off and try breaking, If the shaking is still there check a wheel by jacking it up and spinning it for warped rotor.
you mean OD off or put it in neutral? In any case, since it's not doing it currently it's not likely to be the brakes. That said, both turning off the OD and putting it in neutral are good tests. If it does it in neutral it's back to brakes or steering components. If it does it only with the tranny in gear or in gear + OD then there's a tranny issue.


Recon: FYI to help you acclimate to some of the lingo things that might cause confusion, for our purposes AOD=automatic overdrive, it's a colloquial reference to a specific transmission model. OD=overdrive for our purposes. If you were saying what I think you were then yeah, good idea. I clarified it above.

Could this possibly be the TC or ABS kicking in?
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Old 12-06-2010, 09:42 AM   #13 (permalink)
stanger00
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Sounds familiar. My car, also an Auto, did this but was totally not related to a transmission issue. Mine had to do with air leaking metered air. While braking to a stop sign or traffic light my car would shudder and most of time just stall out. Also, I notice, this was especially apparent after I had a custom tune, that when the converter unlocks, typically unlocks if you faintly touch the brake pedal, the RPM's would drop by 300-400 RPM's. If you're already coasting and tap the brakes below 10 mph I could see this being a cause for your car to shudder.

If I'm not mistaken you posted that you just had a custom tune put in the car?
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Old 12-06-2010, 10:03 AM   #14 (permalink)
krenogin
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When you throw it into neutral before stopping its a-ok.
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Old 12-06-2010, 10:11 AM   #15 (permalink)
stanger00
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Quote:
Originally Posted by krenogin View Post
When you throw it into neutral before stopping its a-ok.
Was this for me?

If so then no, I just fixed my car. Why should i inconvenience myself by letting my car own me. I own my car and have no need for its issues no matter how nuisance the issue is.
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Old 12-06-2010, 10:21 AM   #16 (permalink)
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has it still done it since yesterday?
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Old 12-06-2010, 10:23 AM   #17 (permalink)
krenogin
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Don't try and be an ******* for no reason. And if I was talking to you specifically I would quote you, Like you did me. Also why would you even try and argue if you just fixed your car? For me and the other members that have a problem, I'm talking to them not you. This is a troubleshooting process, do you know what troubleshoot means?
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Old 12-06-2010, 10:41 AM   #18 (permalink)
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Quote:
Originally Posted by krenogin View Post
Mine does that occasionally, not all the time. I just put my car into neutral when I come to a stop. It also keeps my voltage from dropping.
Intermittent problem...hard to troubleshoot. Too many variables but either IAC, leaking air or transmission sticking in gear too long. But, you have yet to solve the issue...hence my smartass remarks.

Quote:
Originally Posted by krenogin View Post
Don't try and be an ******* for no reason. And if I was talking to you specifically I would quote you, Like you did me. Also why would you even try and argue if you just fixed your car? For me and the other members that have a problem, I'm talking to them not you. This is a troubleshooting process, do you know what troubleshoot means?
Yes, I think I heard of this word, troubleshoot you say. I live in Iraq and I'm overpaid to work/troubleshoot simple diesel generators.

I wasnt sure...answered was half-cocked smartass like. Hey, it happens.
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Old 12-25-2010, 10:54 PM   #19 (permalink)
walleter12
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Some times i too experience the same issue. well i am not sure about this why don't you check with the mechanic as i am going to do the same.
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Old 12-26-2010, 07:33 AM   #20 (permalink)
r3dn3ck
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spammer is ban.T
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Old 12-26-2010, 07:33 AM
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aod, back, brake, brakeing, braking, car, front, low, mustang, shudder, shudders, speed, speeds, stops, teansmission, violently

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