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04-23-08, 04:27 AM
| | Cadillac Owners Member Cadillac(s): 03 Seville STS & 05 F250 4x4 Powerstroke  | | Join Date: Apr 2006 Location: Suburbs of Chicago Age: 32 | | | '03 STS lurches forward when braking almost at a complete stop, maybe trans mount?
I have an '03 STS, and I noticed while braking, the car lurches forward a mere second before coming to a complete stop. At first I thought maybe the trans wasn't downshifting at the right point, but now I think maybe a trans mount is on its way out. The car has 105k miles on it. I replaced the front mount (the one that typically goes) 20k ago. It sure feels totally different then when the front mount failed. I drive it like I stole it (actually, I usually have to steal it from the wife!) some I know I'm hard on things. Hopefully someone can shed some light.
Thanks! |
04-23-08, 04:53 AM
| | Cadillac Owners Member Cadillac(s): Cadillac | | | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
To a point all my automatic cars do this from downshifting to first at around 5mph or so. Its only noticable when i try to notice it if that makes sense. Even does it on my 06 MCSS |
07-15-08, 06:49 AM
| | Cadillac Owners Member Cadillac(s): 03 STS, 97 Camaro SS 450rwhp, 91 Mustang drag, 02 Grand Cher | | | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
even figure it out....mine just started doing the same thing???? |
07-15-08, 09:20 AM
|  | Cadillac Technician Cadillac(s): none | | Join Date: Nov 2005 Location: Alexandria, VA Age: 41 | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
The front mount is the only one that really ever goes bad.
The 2-1 shift can be noticeable if you are paying attention, if it is too strong you could have a trans issue or something.
How's the fluid?
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Views expressed by the author of this post do not necessarily represent those of the Lindsay Automotive Group. |
07-15-08, 11:54 PM
| | Cadillac Owners Member Cadillac(s): 03 STS, 97 Camaro SS 450rwhp, 91 Mustang drag, 02 Grand Cher | | | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
oh ya def really strong downshifting from 2-1 but it feels like a mount when putting it from park to drive so i was thinking it might be a mount......what are syptoms of front mount??? |
07-16-08, 07:55 AM
| | Cadillac Technician Cadillac(s): none | | Join Date: Nov 2005 Location: Alexandria, VA Age: 41 | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
Usually the front mount can be felt most on certain acceleration loads.
If you are really tuned in to the sensations coming from the car you can feel it, get rolling and then juice it about 1/3 throttle, when they go you can feel the extra movement.
The best way to check it is visually on a lift. |
11-24-08, 03:52 AM
| | Cadillac Owners Member Cadillac(s): 03 STS, 97 Camaro SS 450rwhp, 91 Mustang drag, 02 Grand Cher | | | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
Anyone else with this problem? |
11-24-08, 12:19 PM
| | Cadillac Owners Member Cadillac(s): Cadillac 2000 sts balck on black | | Join Date: Nov 2008 Location: montreal quebec canada Age: 37 | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
My volvo had this problem but it was from a bad brake caliper ! |
11-24-08, 01:52 PM
| | Cadillac Owners Fanatic Cadillac(s): Cadillac Seville STS 2003 47000 miles | | Join Date: Aug 2008 Location: gurnee, il Age: 43 | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
What would one notice if the mount was bad with the car on a lift? Can one tell just by looking at it (engine off) or would I need to rev the motor while looking at the mount? Are they difficult to change out or are they like most others ( loosen bolts, place a block of wood under the oil the pan and lift up with a floor jack to get the engine off the mount and change it out)
Thanks.
Last edited by Renew82; 11-24-08 at 01:56 PM.
Reason: to correct poor english.
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11-24-08, 01:53 PM
| | Cadillac Owners Fanatic Cadillac(s): Cadillac Seville STS 2003 47000 miles | | Join Date: Aug 2008 Location: gurnee, il Age: 43 | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
Double post. Oops...
Last edited by Renew82; 11-24-08 at 01:54 PM.
Reason: Double post.
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12-26-08, 04:59 AM
| | Cadillac Owners Member Cadillac(s): 03 STS, 97 Camaro SS 450rwhp, 91 Mustang drag, 02 Grand Cher | | | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
anyone else have this problem? |
12-26-08, 06:41 PM
|  | Cadillac Owners Connoisseur Cadillac(s): 2003 STS, 1993 Deville, 1985 Deville | | Join Date: Jul 2003 Location: Wyoming | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
I also have an '03 STS and my car has never exhibited this problem. So, this is not a normal thing for that year/make/model. |
02-11-09, 07:04 PM
| | Cadillac Owners Member Cadillac(s): 03 STS, 97 Camaro SS 450rwhp, 91 Mustang drag, 02 Grand Cher | | | | | Re: '03 STS lurches forward when braking almost at a complete stop, maybe trans mount
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