IS F (2008-2014) :: Strange Vibration When Car Is On Idle
Oct 9, 2009
I've had my ISF for about 3 to 4 months. I absolutely love the car and i haven't seen too many of them in this area (central NJ). I wonder why lexus hasn't done a better job of informing the public. Most people don't even know that lexus makes a V8 sports car.
When the car is on idle, there is this strange vibration that i feel coming from under the seat. It happens for a few seconds and then stops and starts again when the car is on idle. It happens when the car is not warmed up, but also when the car is properly warmed up. I'm not sure if its a cause for concern. Is it because of the timing belt? Engine? Just want to make sure its normal and have the car looked at if its not.
View 14 Replies
Advertisement
I'm not sure if this is normal, but I have noticed a slight vibration in the steering wheel. This happens when the engine is completely warmed up and If I'm sitting at a complete stop in drive (no air conditioning, seat warmers, or headlights on) it happens. It is not a vibration where the idle goes up and down. The rpm gauge shows that it is between a consistent 550-600 rpms. When the headlights or air is on, the idle goes to around 700-750 and the steering wheel vibrations go away. I do not have any cel on and I know the car is not miss firing. I think it's just because the low idle.
View 9 Replies
I have a 2008 focus and at about 15000 miles started having a slight vibration at idle. Its idling at about 700rpm is that normal? It more annoying than anything. Took it to Ford and they just say its normal. What the problem could be? Should I replace the plugs?
View 4 Replies
5.0L ... I'm having one of those moments, you know after you do a mod to your truck and all of a sudden you notice something about your truck that could have been there all along but now you notice it as something new? Ok earlier in the week I had my exhaust resonator removed and replaced with a straight-pipe by a reputable exhaust shop. IMO the work looks to be pretty good for what it is.
That said I have always been nervous about getting exhaust work on any vehicle because it always seems like tampering with or removing the OEM plumbing for aftermarket or custom work tends to develop a vibration at some point.
So here is what I've noticed over the last couple days, when driving my truck it is extremely smooth, almost like glass. When I come to a complete stop say at a traffic light about 1-2 seconds after making the complete stop I feel this slight harmonic vibration in the steering wheel. For those of you that have an iphone it would be like having your phone bolted to the steering shaft somewhere and it on constant vibration if that makes sense.
Just to prove it only happens when I'm sitting still and idling in (D)rive I sat in my driveway with the truck idling, set the park brake and released the brake pedal holding the truck in place in (D)rive with the parking brake. No vibration, smooth as glass engine idle, as soon as I put my foot back on the brake pedal the vibration comes back. It's as if the extra draw of applying the brakes puts an extra load on some sort of accesory drive or componant under the hood and the result is this harmonic vibration.
Just so everyone knows, the vibration is very noticeable to me because I drive the truck daily, most people wouldn't pick it out if I didn't tell them first. Case in point if my wife drives the truck she can't feel it unless I tell her what to look for. There are going to be some of you that just say my truck doesn't do this and has had a smooth idle for XX,XXX miles I believe you but let me know now that I have explained exactly what to look for. Like I said for all I know it's done this since day one.
I have a feeling that the straight pipe might have been welded in slightly longer than the oem section that was removed thus putting more tention on the exhaust and engine if that makes sense, the end result being a slight vibration?? I know that manufactures put these little rubber bushings along the exhaust system on cars/ truck to absorb harmonic vibrations and for all I know my resonator might have been designed to balance out harmonic vibes in the exhaust system as well as quiet down the exhaust.
View 2 Replies
I just bought a 2008 Elantra SE with 26K miles. So far, I've really enjoyed it, except for, at times, it does vibrate somewhat during idle.
I took it to the nearest Hyundai dealer, and they clipped the throttle cables to the inside of the firewall. This did make some improvement, but I still feel vibration during idle when the engine is warm (doesn't seem to as long as RPMs are up). It's almost as if the idle is set a little too low.
Maybe this is just normal vibration? It's not too bad, just noticeable. Can idle in these cars be adjusted? It seems the car is too new to have clogged fuel injectors. Everything else about driving it feels great, acceleration, etc. Do you think using a higher octane gas would work?
View 2 Replies
I have 2008 f150 with 5.4 and 54000 miles. It has a bad vibration or rough idle only when AC is on. When AC is off it runs very smooth. Runs great while driving with AC on. Tensioner pulley was moving a lot more than normal when engine started vibrating so i replaced it and the belt but it didn't work. I also checked the other pulleys and they are good.
View 1 Replies
Had my JoeZ exhaust installed at my first oil change at the dealership about a month ago.
Anyway, late last week I noticed on cold start in the morning I'm getting a metallic vibration noise. This is on gentle acceleration out of my subdivision. It disappears within a minute or less and doesn't re-occur until the next morning. Best way I can describe the sound is a cell phone set to vibrate sitting on an aluminum cookie sheet.
Any hints on what I can check that might be the culprit? I already checked to see if the muffler tips are hitting the exhaust diffusers but they're clearing and I can reach up around the canisters and fit my hand up around them so they're not touching that silver heat shield material.
View 11 Replies
I bought the truck last November with a bunch of issues. My most recent problem is a hard vibration at idle. No it is not the infamous misfire and stall. All timing components (chains, tensioners, guides and vct solenoids) have been replaced.
I've replaced the ignition coils, spark plugs, air filter, and fuel filter. When I'm at a stop light or just idling in the driveway I can feel the vibration in the cab through the seats and the steering wheel. I can see the drivers side mirror vibrate but not the passenger side.
I've seen posts that are saying that this vibration is normal, but it seems a but harder of a shake than normal. Would there be anything that would only affect the driver side bank and not the passenger side?
View 7 Replies
When the truck is idling it has a weird vibration and their is a hum that comes from the engine. It then clicks like my clutch fan disengages or engages and both go away. I have only noticed at stop signs and sitting in a parking lot. 2004 5.4L....
View 2 Replies
LS F idle at without the AC on, mine is about 500 rpm, which seems low to me, if AC is on it feels about right 750 to 800 rpm.
View 8 Replies
I posted a while back about my 04 5.4 having an issue at idle. I did all the normal things like replace coil, spark plug, etc etc. No change to the issue. It still acts as though it's misfiring on a cylinder and I get codes P0306 and P0316. Finally took it to ford and had a diagnostic check ran. Everything on the top end was in working order. The tech even put a known working coil on 6 and nothing changed. I was told that it's either an intake or valve issue on that cylinder. But no definite answer to problem.
Fast forward to yesterday. I got a wild hair at lunch and went out and started truck. Pulled injector plug off of 6. No change to the way it was running. I did the same for 5, 7, 8, 1, and 2. All of which made a big difference in the way it ran. It was obviously misfiring with no fuel to cylinder. This gave me the idea to swap 5 and 6 when I got home to see if the issue followed the injector from 6. I did NOT. I pulled the plug on 5 and got the obvious change in the way it ran. So there is definitely something going on at cylinder 6 that I cannot figure out.
PCM, bad intake, bad valve? I'm not rich so a trip to ford for repair is gonna have to wait. Truck seems to run fine when driving except for slight hesitation during acceleration.
View 3 Replies
My F-150 has developed a rattle and vibration at idle that only occurs with the truck in gear and stopped (with the brake depressed.) The noise appears to be coming from the front of the truck, perhaps from the driver's side (though it's difficult to tell while sitting in the cab).
Before I go crawling around underneath with my son holding the brake while the truck is in drive--I would sure like to know where it might be best to point the flashlight.
View 6 Replies
Its been really really hot lately here in SoCal and i noticed something weird. When my car is running with the AC ON I notice this vibration/buzzing from the car. I feel it on the brake and accelerator pedals too. It doesn't happen all the time but its pretty often. I can feel it more when im stopped at a red light. Is this normal?
View 5 Replies
My new to me Golf makes a strange "whistle" sound around 2000+ RPM. In any gear only when accelerating. My car does not have a turbo so its not that, the sound is coming from the motor it self. Very strange.
I dont think it comes from the tranny or clutch.
Car has 95K miles on it, t-belt and water pump done at 68k (but in 2008!, inspected it and the belt looks fine, no cracks or fraying or anything) This whistle sound is so strange. My wife says it sound like a whistle then it changes to a slight vibration sound.
View 4 Replies
My truck had a slight vibration at idle today and what i noticed the most was i was looking at the top of the motor and i noticed that the fluid in the power steering reservoir was shaking back and forth like i was shaking the container. Is this from the vibration or is the power steering system vibrating. I have had this truck for two weeks and it has 135k on it. It is the 5.4 motor...
View 1 Replies
I'm new to owning an ISF. I purchased it almost two months ago and couldn't be more happy with it. I know after owning a car you will start to notice more and more about the car. About a month into owning the car I was on my way to work and I stopped at a light. I noticed that there was a very slight shutter at idle. No where near the shutter if it was missing on a spark plug. After that day it has drawn my attention whenever I stop.
My question is is this normal? I know having a V8 in the car there is going to be some vibration. It's a 2009 with 29k.
View 8 Replies
I have a strange vibration that radiates from, i think, the drive line or transmission.
View 1 Replies
So I got my 2010 ISF last year around this time.... I never noticed anything a possible heat problem... So basically I've noticed that when ever I stop at red lights or at idle, my heat turns cold?
Temp is at high and the AC light is off too... When ever I drive it warms up again and works like a champ... But at idle or stopped it's completely cold....
It's scaring me.... My car is certified still I believe, this problem should be covered since it's internal?
View 6 Replies
Just had a hub get stripped a few weeks back and had to replace the whole hub assembly. Now just a few weeks later, I started developing this strange rubbing, almost scraping sound when backing of the garage in reverse and the diving speeds of like 5-10 mph. It has to be wheel related becuase the sound goes in and out as the wheel goes around.
Put the car up on jack stands , checked fender plastic underneath the wheel wells, dchecked the dust sheild on the rotors, checked the tires out, even spun the rotor around with my hand and I couldn't replicate the sound?
Just Started about 5 days ago and was only noticeable at slow speeds every other day, then today it seemed worse and I can almost hear it when driving 25-35 mph and I'm also starting to feel it in the steering and body of the car as a vibration.
I just want to get this car back running smooth... Just put new suspension on as well, new strut bearings, but I had to reuse the strut mounts because the dealership was out of mounts. Don't think the suspension has anything to do with it, but you never know. How to upload a video... I can see if I can somehow record the sound.
View 11 Replies
I bought a new 2012 Elantra in March. Every so often I get a strange vibration through the brake pedal when I'm at a complete stop (red light/stop sign). It happens intermittently and I can't narrow down any exact cause. It happens when the engine is cold, fully warmed up, A/C on, A/C off, only been driving for a few minutes or driving for a few hours. No system lights come on. I've taken the car to the dealer twice and discussed this with them. They've not hooked it up for any diagnostics as yet. I don't think it's a vacuum line, engine or transmission issue because it is intermittent. I also don't think it's a defective engine/transmission mount. Could it possibly be the ABS module?
View 7 Replies
I'm battling an odd suspension issue...over the last 5-7,000 miles, I've had a strange vibration issue surface that has varied in intensity depending on speed and road surface. I've had a damaged wheel trued, replaced all four tires and had all four wheels/tires RFV balanced. The vibration has changed but not quite gone away. Instead, it's been joined by an increased vagueness in directional stability (tendency to wander) at highway speed.
Last week, the tech balancing my tires said he felt my right hand front rear control arm bushing was worn. The more I've thought about this, the more I'm wondering if this is what might be the source of this mystery vibration issue. So, I really have two questions?
First, bad front CA rear bushing replaced under warranty? 15,000 miles does NOT seem like an acceptable service life for a suspension bushing? Do these bushings have a history of premature wear and failure, or am I just lucky?
Second, if I do have to replace one or both bushings (left and right pt. no. 5C407183A,) I'd like to ask if the solid bushing (pt. no. 1J0407181) from a Jetta or Beetle will work in a Passat control arm? If I do have to replace the bushing, it might be better to put a more solid piece of rubber in there instead of the flimsier original part.
View 3 Replies
