Lexus SC430 :: When Drive On Freeway At Around 60 - 70mph Car Decelerates
Jun 12, 2012
I've own my Lexus sc430 for a couple of years now and I've been experiencing some problems. Its a 2002 sc430 with 77k miles. When I drive on the freeway at around 60-70mph the car decelerates. Everything else is working. The car feels like I let off the pedal, but I really didn't. I went to the my mechanic and try to see if any codes came up but nothing. Also hooked it up to the scanner while driving and when the problem happens still no codes. the mechanic cleaned the MAF sensor and throttle body. He said he thinks it might be fuel filter problem. I read that the Throttle Position Sensor could be the problem, but when I told my mechanic he said he doesn't think that it could be the problem or else it would throw a code. The mechanic also thought that it could be that the tires are low on air so he filled them up and drove home and had no problems. but I feel its still might happen. a
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I bought a 2002 SC430 about 6 months ago. The car has been flawless, until today. Twenty minutes into the drive while on the freeway at 75 mph the speedometer went to 0 and the ABS and Brake warning lights came on. The car and brakes seemed fine, I returned home. In the driveway I turned the car off and then restarted, all was good. No warning lights, and the speedometer worked on a drive down the street.
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I thought my top used to go down in drive when I was at 0mph, but recently it only goes down when the car is in park. Maybe my memory is just bad but does everyone's sc430 top go down in park only ? Or can you also drop the top when you are in drive at 0mph? Maybe it never could drop the top in drive at 0mph and my mind is playing tricks on me!
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I have an interesting automatic transmission problem. Hot or cold makes NO difference. When the car is started, put in reverse it will work perfectly 100% of the time. When the car is started, put in Drive the transmission will slip for about 5-10 seconds before working perfectly. When the car is started, if you wait 3-5 minutes, then put it in Drive it will work perfectly.
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Experienced a rear axle whine above 70mph? I've noticed a whine while just slightly on the gas above 70mph (maintaining speed). Does the GX have a regular ring and pinion set up or is it a more complicated affair?
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I have just become a proud owner of a gs450h 2006. So far i love it. Just one thing i wanna clear up for peace of mind. It is a cvt gearbox and when i floor it there is a brief pause in power at 70mph ish. Then it flies full power the kw gauge goes all way but a lot faster than the acceleration previous to the flat spot. Its like it changes gear at 70 and hits a massive powerband but id like that to be instant and sooner.
Hybrid passed all tests last week at lexus.
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I am in search of a SC430. I know that from 02-05 it has 5 speed trans. 06 and newer has 6 speed.
Is there a big different in the drive? I just want to justify the extra cost for the 06 and newer.
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So today I took the gx470 on the highway and once is approached 70mph i noticed the steering wheel shaking... never before have i noticed this but today it happened i guess sporadically... just the steering wheel and nothing else... is this just the alignment? bad road? excessive speed? funky... lmk
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I have a vibration in my passenger seat of my 2009 camry from when I drive on the freeway. 98% of my commute to work is on the freeway and about 99% of the time there is no one in my passenger seat. The seat is seated upright and when I look at it i see the entire seat back jolting back and forth, just enough to make a vibration and a noise. How to tighten the seat? I assume it will be tough to do and is just normal because the leverage of the seat back being so tall compared to the seat butt rest.
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I have a 1986 bmw325 es. When I drive on the freeway or even in town my car sounds like a bi-plane, a loud roaring noise. A friend of mine suggested that it could be the tires. I took my car into a tire place yesterday and after riding with me, they think I need a new front hub assembly to replace the front wheel bearing. When I called a mechanic he said I should only put in a bmw part, not an after-market assembly. I called another mechanic and he said that bmw parts are made in Germany by not necessarily by BMW. In any case, to you think I should pay more for a bmw/German-made part instead of an after market part. The tire company was going to put in an Citrix assembly, whic his an after-market part.
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I have a weird vibration only at freeway speeds. It's a vibration that lasts 3 seconds but are consistently 2-3 seconds apart. It's a very suttle vibration and can be felt at my feet and slightly on the wheel. My passengers can feel it if I mention it. The key thing about the vibration it's starts and goes away the starts and goes away?
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Is it possible to turn off the freeway exit info on the nav? This is the info that shows up when you are in a long stretch and it shows POIs in between your current location and the exit that you will take. I do not like that it takes up half of the screen to display info I do not need.
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The car developed a vibration at freeway speed (65-80+) and the dealer kept saying it was tire balance, alignment, etc. After replacing tires, having them road force balance the tires and do an alignment, car still had the vibration. Contacted Lexus and the service manager drove with me and immediately felt the vibration. they double checked the balance, alignment, etc. and decided it was shocks. Car has 70,000 miles. Lexus agreed to pay for 2 of the struts. Picked up the car and it is like new. Smooth as silk. the old shocks did not have signs of being worn out, leaking or being bad. I was a bit hesitant but the Service Manager said if it didn't fix the problem, they would put the old ones back on and I wouldn't pay for anything.
I have my car serviced only at the dealer and they have stood behind the car. Lexus also. I had the control arm problem and Lexus stepped up and paid for that repair.
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When my 2009 Sonata decelerates to about 20 mph, the car jerks. This happens when my foot is off the brake. What's going on and how can I fix it?
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I was driving on the freeway and the trac and engine lights came on.. Noticed that I am no longer getting the Eco light when coasting. Ran the codes and it's P0157 and C1201. I have recently changed tires, not sure what other reason can cause the lights.
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I have been having issues with the tires rubbing even on a slight dip on the freeway specially when running at about 70 mph . I have a 20x9 front offset 32 tires 245/35/20 and 20x10 rear offset 35 tires 275/30/20. I also installed tanabe nf210 springs. Is it bec of the offset? What can I do to get rid of it?
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So, lately I've noticed a slight fluttering sound in my '08 GS460 when accelerating on the freeway or up a slight incline. It'll kick in around 2,000-4,000 RPM, and it almost sounds like it's coming from right underneath the center console. I did have an exhaust system installed, then uninstalled, so maybe it's something the shop did, but can't be positive whether or not it was there before (always drive with my music on pretty loud).
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Took the car on the hwy earlier today. A/C was on and wss going about 60 mph when all of a sudden I got this horrible burning rubber smell inside the cabin.
I exited the freeway and the smell eventually subsided. I'll try again tomorrow to see if the smells comes back.
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This has to be one of the most shocking events of my life. Driving at freeway speed, I heard a boom. I stopped & I looked all around, to find busted moon roof, coming apart near the gasket & a hole (irregular shape) near the middle.
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With my car sitting, out of gear or clutch in, I rev the engine to say 4 thou. As the engine decelerates I get a perceptible vibration or shudder. It feels like an out of balance. In gear, accelerating, no problem. In gear, decelerating, no problem. And it doesn't happen all the time. It does, or doesn't do it hot or cold.
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So I took my car in last Tues (Jan 15) to get an oil change. I mentioned that whenever I let off the gas and let the car decelerate without engaging the brakes I hear an odd noise. The noise is more pronounced at lower gears, but there were no special conditions that I wouldn't hear it. After a couple of hours, they tell me that my catalytic converter needs to be replaced, something about it being loose.
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