Lexus SC430 :: Rough Idle With AC Or Headlamps On?
May 18, 2015
Idle is good in gear without load but if i turn on the AC or the headlamps the idle speed increases slightly but is not as smooth ...very weird...
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May 18, 2015
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Lexus SC430 :: Intermittent Rough Idle
I have done hours of searching about the rough idle on the SC430. What I haven't been able to find is any information about an intermittent rough idle. I have cleaned my MAF sensor twice.
I am having my mechanic replace the radiator tomorrow because of a leak and he is also replacing the idler pulley and the belt tensioner (one of them is making a noise and I purchased an extended warranty!) At the same time he will be doing a throttle body cleaning. I had my timing belt replaced as well as the water pump and had my mechanic check all the spark plugs and all were fine.
I am going to have him check the motor mounts as well. The RPM's are fine with the AC on or off and I have used Lucas fuel treatment on this current tank of gas without any results and my next tank I will try Seafoam as suggested by my mechanic.
Lexus SC430 :: Initial Idle RPM At Start Up
When starting your SC on let's say a day where the temperature is 35 - 55 degrees, what is your initial idle RPM?
Next, how long does it take to settle down to a lower RPM and what is lower RPM when the car is still in Park?
Lastly, can tapping the gas pedal after initial start-up bring the idle RPM down while the car is in Park?
Lexus SC430 :: Seat Vibration When In Idle
I took my car to a mechanic the other day to get the spark plugs change. Then I notice when I turn my car on my seats starts to vibrate when in idle. Is this normal cuz the mechanic says this is normal and that every car vibrates just a little. I read some where it could be the mounts but someone on here told me they not because it doesn't shake my seats just vibrates if I seat there I can feel the seats vibrating on and off its not crazy bad vibrate. It's a minor vibration. I was hoping for no vibration what so ever like sitting in on my leather couch in my living room. Mine is a old model 2002.
View 3 RepliesLexus SC430 :: Slight Vibration From Engine At Idle
Noticed a slight vibration from my engine at idle. Nothing too overbearing but just had a concern. How much should I expect if the engine mounts need replacement? Parts? Labor?
View 11 RepliesLexus SC430 :: 2005 - Sudden Whirring At Idle
I hope I didn't just happen to notice this today if it has been going on for any length of time now. I started up our '05 this morning and she's definitely whirring at idle. I do not recall hearing this sound at all recently and we've been on a couple lengthy trips with it. Fluid levels all appear normal.
Had my wife start it up too and she agreed that the whirring was not there previously. What are the most likely candidates into which I should look first? It' not high pitched, but a steady muted whir of the type I might expect to hear when two gears spin while making contact.
Lexus SC430 :: Engine Shake At Idle When At Red Light
I have a 2003 SC430 with 170,000 miles on the odo. When at idle, the car shakes a little. I notice it the most when at a red light. But if I put the car in N, the shaking goes away. It happens with the most severity when in D and with my foot on the brake. I'm assuming the shake is normal for a car of this age and mileage, but i'd like to eliminate it.
View 10 RepliesLexus SC430 :: Fuse Box For Driver Door / Vibration At Idle
1) Where to find a driver's lower fuse panel in cabin fuse cover/kick space left side, near brake?
2) I have a slight intermittent magic fingers kind of idle. I changed spark plugs, no diff, have been using Techron, timing belt replaced, etc.
Lexus SC430 :: 2006 - Initial Engine Idle Not Going Down As Usual
My '06 SC has about 72k miles and I've notice of late after starting it, it initially idles at about 1,200 RPM and tends to stay there until after driving and warmed up and then goes down. It used to start up at 1,200 RPM and after a very brief period of time would settle at 1,000 or 800 RPM, I can't recall exactly. My question is, is this normal related to the life of the engine, or do I have a sensor or other type of issue that can be addressed.
View 12 RepliesLexus SC430 :: Front Roof Popping Sound Over Passenger Side On Rough Road
The closest thread I found was this [URL] ..... The straight rod that goes into the windshield from the roof, on the passenger side, does look a bit worn. should i tape it up? I started having this problem recently. Never heard this noise the past.
My sc430 is giving a loud pop right over passenger's side from roof, whenever my car goes over a bump or rough road. I think it's where the front hardtop latches are. Only on the driver's side. It's a loud pop sound.
Does this have something to do with the latch, or latch motors, that closes the power roof ? Would it work if I tighten the retractable top by turning the rubber button in the center back of the car, the one that exposes during roof operation as outlined by other posters here?
Lexus SC430 :: Shakes When Idle And At Stop Lights - New Motor Mounts?
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.
Lexus GS 2006-11 :: Switched HID Bulbs Now Loud Buzzing / Whining Sound Coming From Both Headlamps
My left headlight has been going off periodically, so to confirm that it's the bulb, tonight I switched the bulbs from left to right/right to left.
The job went very smoothly. It took me about 20 minutes, but I took my time. I buttoned everything back up and turned on the lights. Both sides came on, but I immediately noticed a very loud buzzing/whining sound coming from both headlamps. It is very loud and I know I would have noticed it before at some point over the course of the last three years that I've owned the car. Obviously, this is not normal, but I can't for the life of me figure out what I could have done wrong, if anything.
Lexus GS 2013+ :: Rough Idle Very Low In RPMs
Not sure if this is normal so I've found that my car is idling very low in rpm's and feels like the car is shivering along with me! (hint: its really cold here) I took a very short video [URL] ....
View 14 RepliesLexus RX 2010-15 :: RX350 Rough At Idle With AC On
I purchased a used 2012 RX 350 with 35K miles a month ago and just realized that when I come to a stop, the idle is pretty rough (or loud?). I also noticed that it's definitely rougher when the AC is on. As soon as I take my foot of the break and press the gas, the "roughness" goes away..
View 10 RepliesLexus LS 2007+ :: Idle Hovers Around 450 - 500 RPMs And Pretty Rough
After the engine is warmed, my normal idle in drive, park, neutral, or reverse is around 650-700 RPMs.
I have recently noticed that when a combination of conditions occur, my idle hovers around 450-500 RPMs and is pretty rough. This low, rough idle occurs when:
1) The car is in drive;
2) The car is at a full stop (foot on the brake or auto-brake hold);
3) All accessories are off (heated seats are off, radio is off, headlights are off); and
4) HVAC is Off.
I went to the dealer and they ran diagnostics. No error codes were recorded. The dealer looked at other ls460s and said they all do that. By the way, I noticed this after my VSR was done.
Lexus LS 2007+ :: Rough Idle At Traffic Lights - Vibration
My 2007 with 73k has started to idle rough at traffic lights. Not horrible, but a noticeable vibration. Rpm's are around 500. If I put it in neutral, rmps go up to about 800 and idle gets better. What could cause a rough idle like this?
View 14 RepliesLexus IS 2014+ :: Slightly Rough Idle On Cold Starts
Owner of a 2014 350 fsport here.... 15,000 miles ... I noticed on cold starts a slightly rough idle since its gotten colder here recently. After starting the car it'll start fine and everything but then as its warming up the needle sometimes jumps 75-100 rpm. its like someone tapped their foot on the accelerator and let off. no lights or anything and the car runs fine.
Heres the catch... i have a joe z catback and joe z intake with fsport filter, could this possibly be why? because of the airflow ? i also have been using Lucas fuel injector cleaner and lubricant.
Also when i put the car in park after driving, i notice the needle isn't steady, it does move a little maybe 20-50rpm, not sure if this is normal or not because i never really paid attention until now.
Lexus GS 2013+ :: 2016 GS350 Engine Idle A Bit Rough
I just purchased a new 2016 GS350. Traded up from a 2013 ES Ultra, which I loved. Love this car even more, from a sportiness perspective. Question to other GS owners. I've noticed a rough noise, or rough idle, when starting the car first thing in the morning, or after it has sat for some length of time. My 2008 ES sounded like that, as does my 2010 RX. My 2013 ES never sounded that way and my service advisor said they changed something in the engine or transmission in the ES. My 2013 purred when it started and never stopped. It was silky smooth.
The new GS just sounds rough for about a minute or so and then smoothes out. Of course, I asked about it and was told everything was normal, which is the standard Lexus comment. Said it sounds that way until something or other warms up or something like that. Im still trying to get used to the different drive and acceleration patterns of the GS vs the ES. Overall I love it. It's just a richer vehicle all the way around. Just curious about the idle. Is it normal?
Lexus GS 2006-11 :: GS300 Rough Idle / Misfire On Cylinder 2
I bought a 2005 3rd gen about 8 weeks ago and I love it except for one problem, a really bad idle/vibration through the cabin when cold starting, it improves when the engine is warm but is still noticeable.
It went back to the dealer where I got it and they gave it a full service, new plugs, oils and filters and replaced the transmission oil too after the check vsc and engine management lights came on.
The codes pulled showed a misfire on cylinder 2, the dealer said the service would cure all and sure enough no more vsc lights but the rough idle and vibration are persistent.
The car has only 78000 miles and I'm pretty certain a Lexus isn't supposed to behave like this.
Lexus GX 2004-09 :: 2006 - Rough Idle When In Drive And At Stop Light
My GX470 idles rough when I'm in "drive" and at a stop. If I drop it into park or neutral it is fine. The 470 has about 98K on it and everything else is great. Looking for a solution to get this smooth again.
View 2 RepliesLexus LS 2007+ :: Engine Light On / Rough Idle At Start Up / Code P0340
1997 lexus ls400 204500 miles, engine light is on code P0340 (cam shaft position sensor bank 1), rough idle at start, once the car warms up it runs ok but loss of power, hesitates, if press more on gas pedal the car jerks. I have replaced both cam shaft position sensors and engine coolant temp sensor but no improvement. What could be the problem?
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