Lexus SC430 :: Shakes When Idle And At Stop Lights - New Motor Mounts?
Apr 20, 2012
I have recently had my motor mounts and transmission mount replaced.
Before the replacement, the car would shake quite noticeably when the engine was being started (maybe even shake 'violently'). I thought this was normal until I had my motor mounts and transmission mount replaced. Now when I start the engine the SC430 doesn't shake at all. The difference is profound.
Just a head's up. I'm not sure what the implications are of running with bad motor mounts for a long time, but I decided to get it done because my car would shake when idle and at stop lights.
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I am feeling more vibration at idle than I believe I've felt in the past. I can feel it in the seat more than I remember before. Granted, it's not like the car is shaking or anything, but I can feel it more than I think I should. Could this be the motor mounts?
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I had my motor mounts replaced about 2 weeks ago with APR ones and noticed that vibrates more than before at idle. is this normal? One guy told me that it takes about a month for the new motor mounts to adjust and then it will not vibrate that much. after two weeks no changes. Also I noticed that they did not put the rubber cover on the left motor mount (passenger side) could this missing rubber cover bring any issues on the short term?
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just replaced the timing belt and water pump on my '97 Acura TL. (80k mi), It now vibrates in gear at idle,but runs like a champ above 1000 RPMs. Didn't do it when I took it in. Our trusted mechanic says it's the motor mounts. I say "how do motor mounts go bad overnight?" There are small drips on my driveway under the car.
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So I had been noticing a bit of wheel hop in third gear before my UM flash. Just got the flash a few days ago, and I love it. But since then two things have arisen:
- When sitting at idle, the car vibrates. I can feel it through the brake/gas pedals and steering wheel. I didn't notice it prior to the UM tune. It's like an undulating feeling even more than a vibration.
- When upshifting, I now seem to get a clanging sound/feeling if I upshift anywhere less than about 3200 RPMs. It doesn't always happen, and it won't happen if I'm really fast with engaging the clutch after taking my foot off the gas. But it is disconcerting.
Prior to the tune, I had gotten used to the sort of bucking and whatnot when you let off the gas and learned how to shift to minimize it. But now it isn't as easy to do a mellow, smooth upshift under 3000 RPM's...i.e. if I just want to pull away slowly from a stop. My question is, do these sound like symptoms of bad motor mounts? The car has just under 25k miles on it. The mounts are all stock. I was wondering if the UM tune was just enough extra power to put one or more of them over the edge.
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drive an '05 sc430 and the steering wheel shakes at above 50mph when I lightly step on the brakes. I have recently had my brakes done and an alignment done as well as both rear shocks replaced.
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After a rough winter here in NJ there are a ton of pot holes and I think I may have jolted loose the rear view mirror. It now shakes so bad I can't even look at it. It makes me dizzy. It seems like it is loose where it connects to the windshield, not where the actual mirror connects. I took off the smaller of the two covers but didn't see anything I could tighten. It also doesn't appear that the actual mirror comes apart. I have to point it away from me at night, it's like a strobe light!
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1998 Infiniti Q45 ... Car shakes at stop lights and tries to cut off, unless I put into neutral and keep my foot on gas peddle, What is causing this? Mechanic does not know what problem is.
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My 2002 passat engine shakes when in idle or stop at light. When running on highway, it is smooth. what could it be?
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I was wondering whether a faulty 02 sensor (in my case bank 1 sensor 1) is bad for the motor or not?
It is clear to me that a worn out 02 sensor can cause the following problems:
Wastes fuel
Can cause engine performance problems, such as surging and hesitating
Is the number one cause of excessive harmful exhaust emissions
Accelerates catalytic converter damage
BUT are there any other risks in case of damage on the long term?
What the ECU will do in case of a faulty 02 sensor? Will our Lexus order a rich fuel mixture to prevent heating problems or are we also running the risk of a poor mixture?
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I bought an 89 celica gt back in december of last 2010. and my motor mounts recently went out on me and i was wonder how difficult it would be and exactly how many motor mounts does my car have? I am fairly new to car repair.
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2002 Passat 1.8T 170,000. My motor mounts have been slowly going bad for a few months now and they are now to the point where when I am slowing down as it is shifting down into third, it feels like I am being rear ended. My question is, is this doing damage to my engine and tranny or is it more of an annoyance.
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I recently found out my motor mounts are bad. Almost a year ago I noticed I was leaking coolant so I just filled it with water every time it was empty. Now I have been getting an overheating problem if it's not filled to the right amount. Just yesterday the problem got worse as there is green gunk at the opening of the radiator and it's always hot. The reservoir is filling up with hot water a lot of the time. My radiator will be empty when that happens. As I was driving the gauge was reading hot. Turning on the heater didn't work much. I tested it tonight, with the radiator full and 2 cups water in reservoir. Drove it a few blocks and turned off car. Radiator had lots of pressure and hot. The reservoir was same level.
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I have a little vibration from the motor mounts which disappears with an extra soft touch on the gas pedal at idle. If I would keep the car I would change the mounts, but there are a lot of new parts already....I cleaned inside the plenum.....
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I'm suspecting that my motor mounts are going bad, but I'm not 100% sure. I have a video of the engine movement when slipping the clutch and revving the engine with the e-brake on. [URL]............................... I don't need high performance ones, but don't want to spend a ton on OEM ones either.
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So ever since i put stiffer motors mounts in my car, the trans has whined. It was perfectly fine before the new motor mounts.
Its not nearly as loud as what straight cut gears sound like....but after taking my car on a road trip to Atlantic City this weekend, it does get annoying after a while. Happens every gear but at low RPMS... 1900-3000 RPMS.
4th gear seems to be the worse. This is not my daily driver so i can live with it, but if it was my daily i would be annoyed and probably but the stock mounts back in. While on the road course i do not hear it because i am at high RPMS and the noise isn't really there (well it might get muffled by the sound of the engine but i hear no whine)
I actually hear everything going on in the trans to be honest, i can hear the clutch engaging/disengaging and every move i make with the trans. (i am glad i still have the dual mass because im sure the chatter would be 10 times louder with stiffer mounts)
I run OEM trans fluid... i have heard of some guys running different fluid to quiet it down some...
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I have a 2004 4-cylinder Camry. Saturday I changed the passenger side motor mount which was broken and the front motor mount, which did not appear to be broken, but there was more play in it than in the replacement. I had to take the battery out and the air intake in order to have enough room to remove the front mount. To remove the front mount, I jacked up the engine with a 2 X 4 underneath the oil pan so as not to damage it. The passenger side wheel rose several inches off the ground. After everything was back together, the car ran rough at first but eventually got better. The only symptom that remains is a noise and slight vibration when the car is in drive. In neutral and all other gears there’s no noise or vibration. They noise seems to be slightly less when the car starts to roll, and after a few seconds in motion, I can’t hear it. What’s causing the noise? If there a third motor mount that I may need to replace?
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I have an '05 Dodge Neon SXT (4.0) with 113,000 miles on it. A few days ago, I had three cracked motor mounts replaced. However, I'm experiencing an increased amount of vibration when the engine is idle. I've had the timing belt , the accessory belt, water pump and valve replaced within the last year. I also recently had a coolant flush and an oil change. I was told that the timing belt cover is broken and I intend to have that fixed in the near future. However, I do not believe the timing belt cover is the cause of the vibration since it was broken and did not cause vibration before the motor mounts were replaced. Why I having the vibration?
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I suspect I have an oil leak where the oil pump mounts to the motor.
It looks fairly simple to replace, but I was reading in the Haynes manual something about the timing chain?
So I don't know if it's more involved than I think.
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I replaced the motor mounts, and now there is a vibration at speed (70 or so). I've taken it to Michigan and back, so it is probably broken in. Can these things be put in improperly?
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Going to replace motor mounts. Foot on brake and placed in gear engine flexes back about 2". Doesn't seem to flex side to side or forward. Replaced dog bone the metal in the middle of the bushing had a visible crack. Still flexes. I am confused about replacing them. Should I replace all including the 2 rear mounts? This is what I have read in many posts and been told by a trans shop. Can I just replace the front and dog bone? Parts guy told me that was all that I needed to do if it wasn't flexing side to side. These things are expensive 170- ea for oems so if I don't have to replace the rear I won't. However I don't want to trash the new ones cause I didn't replace them all.
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