IS250 AWD not handling well
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IS250 AWD not handling well
I have a IS250 AWD with F-Sport springs/shocks that is handling very poorly on normal roads, during turns, and over bumps. There's a noticeable rattle coming from the underbody of the car when driving slow over a bumpy road – and that's in conjunction with the floaty, "unconnected" feeling.
When I first got the parts installed, it handled like a dream.
What parts would one check with the symptoms above? CV boots, shocks, end links, bushings, bearings, etc?
Thanks
When I first got the parts installed, it handled like a dream.
What parts would one check with the symptoms above? CV boots, shocks, end links, bushings, bearings, etc?
Thanks
Last edited by richf; 11-01-12 at 06:26 PM.
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Had a similar problem on my 350. Have lexus check the steering rack and EPS system. They found that some sensors had died on mine and was messing up the EPS calculations. Replaced the rack under warranty and it feels like new again.
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#4
I have a IS250 AWD with F-Sport springs/shocks that is handling very poorly on normal roads, during turns, and over bumps. There's a noticeable rattle coming from the underbody of the car when driving slow over a bumpy road – and that's in conjunction with the floaty, "unconnected" feeling.
When I first got the parts installed, it handled like a dream.
What parts would one check with the symptoms above? CV boots, shocks, end links, bushings, bearings, etc?
Thanks
When I first got the parts installed, it handled like a dream.
What parts would one check with the symptoms above? CV boots, shocks, end links, bushings, bearings, etc?
Thanks
Shocks could be a possibility, best way to check that is to go the hood or trunk of the car and just push down on the car and see how quickly does the car settle after a few downward pushes (put enough to make the suspension bounce, but not enough to dent anything ). If it takes a few seconds to settle, then the shocks are probably bad and they probably installed bad shocks from the beginning. The shocks could be what is producing the floaty feeling besides the springs; the springs because of their progressive nature (as opposed to the linear nature of the OEM springs) will make the car feel a bit floaty over dips.
Also, look into what configt said with the steering rack and the electric power steering. It never hurts to look at all the options.
I wanted to do this suspension setup when my stock shocks are worn out on my 250 AWD, so I'm hoping the best for you and report back on what you find out with your car.
Last edited by knguyenk; 11-02-12 at 02:17 PM. Reason: Adding more info.
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CV boots would only be a factor if the car was lowered under 25" from the ground to the top of the wheel well based on what people have been saying on the boards here when I was researching lowering springs and coilovers. This is because lowering the car past the 25" mark will cause the CV boots to tear and would then leak a fluid or grease (I forget which ); since you have the F-Sport springs, that won't be the issue since the F-Sport springs are a mild drop of an inch all around or close to it.
Shocks could be a possibility, best way to check that is to go the hood or trunk of the car and just push down on the car and see how quickly does the car settle after a few downward pushes (put enough to make the suspension bounce, but not enough to dent anything ). If it takes a few seconds to settle, then the shocks are probably bad and they probably installed bad shocks from the beginning. The shocks could be what is producing the floaty feeling besides the springs; the springs because of their progressive nature (as opposed to the linear nature of the OEM springs) will make the car feel a bit floaty over dips.
Also, look into what configt said with the steering rack and the electric power steering. It never hurts to look at all the options.
I wanted to do this suspension setup when my stock shocks are worn out on my 250 AWD, so I'm hoping the best for you and report back on what you find out with your car.
Shocks could be a possibility, best way to check that is to go the hood or trunk of the car and just push down on the car and see how quickly does the car settle after a few downward pushes (put enough to make the suspension bounce, but not enough to dent anything ). If it takes a few seconds to settle, then the shocks are probably bad and they probably installed bad shocks from the beginning. The shocks could be what is producing the floaty feeling besides the springs; the springs because of their progressive nature (as opposed to the linear nature of the OEM springs) will make the car feel a bit floaty over dips.
Also, look into what configt said with the steering rack and the electric power steering. It never hurts to look at all the options.
I wanted to do this suspension setup when my stock shocks are worn out on my 250 AWD, so I'm hoping the best for you and report back on what you find out with your car.
Don't let this deter you from getting the setup.
#7
That's interesting, I wonder if there are other nuts and bolts loose from things that had to be loosened or even disconnected in order to facilitate the installation of the shocks and springs.
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I would still definitely look into the F-Sport springs and shocks when my stock shocks or springs go belly up and possibly the sways too if I have the money.
That's interesting, I wonder if there are other nuts and bolts loose from things that had to be loosened or even disconnected in order to facilitate the installation of the shocks and springs.
That's interesting, I wonder if there are other nuts and bolts loose from things that had to be loosened or even disconnected in order to facilitate the installation of the shocks and springs.
Bolt circled was VERY loose – dangerous.
#9
Here are the installation instructions for the shocks and springs respectively; I have a feeling that they were not torqued to specifications and is what is making your car act unusual.
http://is.sewellparts.com/pdf/PTR13AWD.pdf
http://is.sewellparts.com/pdf/PTR0753080.pdf
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That's definitely dangerous that that nut wasn't tightened on that tire rod. I can't help but think that something wasn't tightened down during the installation. I know the rears for sure have so many bolts and nuts that need to be torqued at different values.
Here are the installation instructions for the shocks and springs respectively; I have a feeling that they were not torqued to specifications and is what is making your car act unusual.
http://is.sewellparts.com/pdf/PTR13AWD.pdf
http://is.sewellparts.com/pdf/PTR0753080.pdf
Here are the installation instructions for the shocks and springs respectively; I have a feeling that they were not torqued to specifications and is what is making your car act unusual.
http://is.sewellparts.com/pdf/PTR13AWD.pdf
http://is.sewellparts.com/pdf/PTR0753080.pdf
#14
I have a 2007 IS250 AWD with 96K and am looking to replace the shocks to get a smoother ride.
At Sewell, F-SPort shocks are cheaper than the regular OEM shocks. My question is . . . Is it OK to install F-Sport shocks with the stock springs? If so, are there any other parts or bushing that should also be replaced? I have seen the other thread where some did use F-sport with OEM springs and they said it was riding good but I thought I would ask here too since this is an active thread.
I live in Minnesota and not looking to lower the car at all. I just want a comfortable ride and of course, responsive would be an added bonus.
Are coilovers used only for lowering the car or can they be used as an all in one replacement? How long do coilovers last with daily driving? Are they specific to performance meaning they are intense for a while and should then get replaced for a new set?
Thanks,
Jason
At Sewell, F-SPort shocks are cheaper than the regular OEM shocks. My question is . . . Is it OK to install F-Sport shocks with the stock springs? If so, are there any other parts or bushing that should also be replaced? I have seen the other thread where some did use F-sport with OEM springs and they said it was riding good but I thought I would ask here too since this is an active thread.
I live in Minnesota and not looking to lower the car at all. I just want a comfortable ride and of course, responsive would be an added bonus.
Are coilovers used only for lowering the car or can they be used as an all in one replacement? How long do coilovers last with daily driving? Are they specific to performance meaning they are intense for a while and should then get replaced for a new set?
Thanks,
Jason
#15
I have a 2007 IS250 AWD with 96K and am looking to replace the shocks to get a smoother ride.
At Sewell, F-SPort shocks are cheaper than the regular OEM shocks. My question is . . . Is it OK to install F-Sport shocks with the stock springs? If so, are there any other parts or bushing that should also be replaced? I have seen the other thread where some did use F-sport with OEM springs and they said it was riding good but I thought I would ask here too since this is an active thread.
I live in Minnesota and not looking to lower the car at all. I just want a comfortable ride and of course, responsive would be an added bonus.
Are coilovers used only for lowering the car or can they be used as an all in one replacement? How long do coilovers last with daily driving? Are they specific to performance meaning they are intense for a while and should then get replaced for a new set?
Thanks,
Jason
At Sewell, F-SPort shocks are cheaper than the regular OEM shocks. My question is . . . Is it OK to install F-Sport shocks with the stock springs? If so, are there any other parts or bushing that should also be replaced? I have seen the other thread where some did use F-sport with OEM springs and they said it was riding good but I thought I would ask here too since this is an active thread.
I live in Minnesota and not looking to lower the car at all. I just want a comfortable ride and of course, responsive would be an added bonus.
Are coilovers used only for lowering the car or can they be used as an all in one replacement? How long do coilovers last with daily driving? Are they specific to performance meaning they are intense for a while and should then get replaced for a new set?
Thanks,
Jason
Last edited by knguyenk; 12-10-12 at 08:06 PM. Reason: Fixing grammar and finish answering a question.
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