Prius (2004-09) :: Engine Will Not Stop Idling And Idles Rough

Just picked up my 2004 Prius from the Toyota dealer body shop. The driver's side was scraped by someone who wanted to be in my lane. Fortunately, we were only going 35 mph. The rear door skin had to be replaced, and most of the side had to be prepped and painted. There are a few silly mistakes: they forgot to replace the driver's door plug, forgot to replace a lower clip, and smudged a tiny area new paint on the bumper. I brought that to their attention and they are going to take care of it... they have to order the plug and clip.

However, as soon as that conversation was complete, it was time for them to close shop. I sat in my Prius, started it, and the check engine light was on. Wasn't on when I dropped it off for the repairs. Also, on the way home, I noticed the engine wasn't turning off when I came to a complete stop (even though the animation says it was off). At idle, the engine is also rough. Looked at the charge bars, and well, there were only two bars showing.

I thought perhaps, though it's not done this before without the animation screen showing it, the engine was on merely to recharge the traction battery. On the way home, the traction battery returned to full charge (green), but the engine still was not turning off when the vehicle was at a complete stop... not was it turning off when coasting... and when arriving home, even with the car in park... and still idling rough. All the while, the animation on the screen is indicating the engine should be off.

When I replaced the traction battery three years ago, I also replaced the 12v with an yellow top Optima. I wouldn't think the Optima is already going bad. I also do not believe in coincidence. I wonder if perhaps some bad fumes have tainted the MAF, or who knows.

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Ford F-150 (2004-2008) :: 2006 - Rough Idling When Warm And Dying At Stops Or In Reverse

My brother's 5.4 has been rough idling and dying at stops and in reverse for a few weeks now. Today it threw a code and he finally had me look at it and it's a P0345 code. I was thinking cam phasers possibly, but I didn't think that would cause a code to throw. Also, all I hear about cam phasers is that it makes the truck sound like a diesel, but his when it's about to die sounds like the engine is about to drop out the bottom of the engine bay. Really rough, REALLY loud knocking, etc... What we should be looking at replacing to get this thing back into shape?

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Prius (2010-12) :: Vibrate From Engine Bay At Cold Start - Sound Like Wheel Of Fortune Being Spun

I've had my 2010 Prius for about 3.5 years now and this is the 3rd maybe 4th time happening. This morning I started the car and the car started to vibrate/rattle from the engine bay. It almost sounded like the wheel of fortune being spun but louder.

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Impala - Chevrolet :: Shaking And Super Rough Start When Engine Warm

All the other cars I had before started better after being warmed up. My 2005 Impala starts perfect when cold first thing in morning but if I go somewhere quick and try to start-up the engine warm it fights it's self and car shakes and it's super rough start . So I figured it's the hot vapors in the engine so I Remove the oil cap and it starts better . What to do to start a warm engine .

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Ford F-150 (2004-2008) :: Rough Idle Start / Bad Compression Until Warm Up

I have 2004 f150 small v8 (4.7?) Has about 92000 miles.

When warm truck runs excellently. At first start up the idle is very rough and raw gas smell for about 4 minutes then truck runs like new. Will start and restart great until it cools down overnite.

My actron says missfire cyl 3. Did not fix it. Dealer says that on start up compression is zero in cylinder three but is 100% when it warms up. Suggested I run seafoam through it. He thinks it has a vacuum leak or carbon at start.

In my limited knowledge I am thinking:

sticky lifter
bent push rods
warp valve

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Prius (2004-09) :: Car Is Struggling A Lot To Climb Uphill

I've noticed that my car is struggling a lot to climb uphill. I am not seeing any signs yet but I hear the gas engine running hard all the time going 30mph-50mph depending on elevation. Battery level on the monitor is always one or two purples when climbing up but it charges pretty quickly downhill. Should I risk driving the car anymore? My next destination is Yellowstone and Banff National Park so these driving conditions will continue.

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Ford 6.0L Power Stroke Diesel :: 2004 F350 6.0L - Idling Really Rough / No Start

I have a 6.0L Powerstroke with about 74k miles. I've owned it about a year. this weekend while driving on the highway at about 55mph i slowed to make a turn. As it came to idle i noticed it was idling real rough. As I accelerated it barely got across the highway. I went to where i was going and let it idle but gave it gas and raised the rpm's to about 1k.

I was concerned it was going to die. As I left it seemed to be better but as i drove it would get real rough and then go away. I accelerated a couple of times engaging the boost and it seemed to be better. I made it home and parked it, but i let it idle before i turned it off.

Now it will not start. it just cranks. everything is pretty much stock. i replaced the fuel filters back in december and also did the blue spring upgrade. I have a OBDII but i didn't have it with me so i wasn't monitoring at the this time. What should be my next step?

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Ford F-150 (2004-2008) :: Rough Idle When Engine Is Warm

I purchased an '08 F150 about 6 months ago, and have a problem that two mechanics haven't been able to solve. The truck has a 5.4L engine. Unfortunately, I bought from an auction and the 30 day warranty expired before I realized the problem.

After a longer drive (30 minutes to work) the engine is warm, and I always back into my parking spot or driveway. In low gear, it begins to idle very rough and the engine shakes. If I leave it long enough, it will stall. Usually I pop it into neutral, give it some gas, and its fine. I just bought a camper trailer, so I'll need to use the lower gear when backing up.

So far, the engine has been flushed twice, the solenoid replaced and phaser replaced. The second mechanic has recommended I contact a dealer, but haven't had luck with them with my previous Explorer. What it could be? I will be getting the diagnostic paperwork this week.

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Accent LC (2000-05) :: Rough Idle - Engine Get Louder And Car Starts To Vibrate Slightly

Recently bought a 2001 Accent that has been experiencing a 'rough idle' for the last few weeks. Basically, after I've driven the car for a few minutes (from a cold engine position) and then stop at a stop light or stop sign, I can hear the engine get louder and the car starts to vibrate slightly, after I've driven for about 15 minutes at higher speeds and then stop again I can actually see the steering wheel shaking when I take my hands off of it. If i put the car in park when I am stopped and the engine is on, the idle calms down quite a bit. The weird part is that when I first start driving the car in the morning, the rough idle problem doesn't happen until about 5 minutes of steady driving - so when the engine is colder I don't experience the problem, The problem is not that serious, and Ive already brought it into a dealer who cleaned out fuel injection, gave me a major tune up and replaced all the spark plugs, but the problem still persists. I am gonna bring it back to them but they seem a bit lost to be honest. Other than this the car is driving normally when I am not idling.

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Ford F-150 (2004-2008) :: 2007 XLT Won't Start - Random Rough Idling Spell Or Stall Going Down The Road

I have a 2007 F150 XLT, Supercab 6.5' bed, 4x4 5.4 Automatic with 67000 miles on it. Its not a Flex Fuel

Over the past couple of weeks it would get go through random rough idling spell or stall going down the road. If it was sitting it would idle clear down to 200 RPM's and just sound like an old 'chitty-chitty-bang-bang' car, not a modern marvel of Ford engineering!

I noticed it particularly does it this on an incline. Initially I fixed it by just coasting to where it was flat. I normally keep it above half a tank so i dont think its a fuel pump not getting fed. So I replaced the fuel filter yesterday hoping it was full or clogged, no changed.

This morning it would start at all, I removed the negative terminal on the battery, rolled to the level, tried it 30 times. Nothing. I checked all of my connectors under the hood and the 2 below the cab under the plastic cover. Everything was connected. I disconnected the fuel pressure sensor and it fired right up and runs smoother than since I've owned it.

It hasn't had any CEL lights, until I disconnected that sensor. Should I drop the tank and clean it? Is there any special gasket kits or connectors I should be aware of? Should I just replace that sensor? Is it connected with a chain of sensors I should check first?

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Prius (Gen 2) :: 2006 - Intermittent Poor Engine Power / Car Struggling To Maintain 68 Mph

Our 2006 Prius (175,000 miles) has recently suffered intermittent periods of diminished ICE power. For instance, for about 1 hour recently driving a hilly section of I-81 through eastern TN, the car was struggling to maintain 68 mph and the HV battery stayed mostly drained at 1-3 bars. Gas mileage was falling, but no misfire. After stopping at a rest area, it was fine. No OBD codes and ICE seems OK otherwise. Experienced a similar reduction in ICE power a few days later. Dealer has no clue. Similar experience I've had with another car was when it's catalytic converter became plugged, but that was not intermittent.

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Ford F-150 (2004-2008) :: 2007 - Intermittent Rough Idle At Low Speeds When Engine Is Warm

Still showing the same codes (per repairman) and still having the intermittent rough idle at low speeds when the engine is warm. It has been so intermittent that I could almost live with it.

So repair guys first replaces the VCT's and runs fine until warmed up and the problem reoccurs with the same codes. He replaces both cam phasers and tensioners today and still same problem and same codes which point to the VCT and cam phasers.

Truck has 80k, city driven, oil changed every 3k or so. Burns ethanol and still runs great at speeds over 10 mph even when this problem appears.

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Toyota - Sienna :: 2009 - Vibrate In D And R Until Warm Up On Cold Days

I have a FWD 2009 Sienna with 62k that vibrate on cold days. It only vibrate when the shifter is on drive or reverse while stepping on the brake. There is no vibration while driving, only when I'm at a stop light. After the engine warms up, the vibration goes away. I can feel the vibration on the steering wheel. I just want some kind of knowledge before taking it in.

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Prius (2010-12) Fuel :: Idling To Warm Up Is Beneficial For MPG?

I can't believe what I'm saying as I always say to start driving (slowly) to warm up the engine. Besides, who has the time?

But, this AM, I was stopped as soon as I exited my driveway as big garbage trucks blocked my cul-de-sac street. The engine went through the warm up cycle as I waited stopped and later, I went through my usual commute.

The thing is the commute ended at 67 MPG (indicated). I usually get "only" 60 MPG on the very same route, unless the engine is prewarmed before driving and I get exactly 67 MPG. I always clear MPG trip counter before driving on a daily bases.

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Ford Ranger / B-Series :: 2004 - Heater Won't Warm Up While Idling

My '04 Ranger has over 240k on the odometer. Runs great and has never given me any issues. Everything checks out OK - all the fluids, filters, and whatnot are in good shape. No CEL or any other indication that anything is wrong (except for maybe the IAC valve and clutch slave.)

I've noticed, though, that when I fire it up in the mornings to let it warm up while I scrape the ice and snow off the windows, the heat/defrost will not blow warm air. It doesn't matter how long I let it sit, it will only blow ambient air through the ducts.

When I get going down the road, however, the heat kicks in, after a bit, and works very well!

I've not found anything that would indicate an issue with the blend door or any other component and this is the first vehicle I've had that did this.

Is it normal for a 4.0 SOHC Ranger to do this? Or is there something I'm missing?... It's not really that big of a deal, but I do find it a bit odd that it would do this.

I mentioned the IAC above - I think it's "sticking" every once in a while and, when it does, I'll hear a loud "thump" right before it idles down to around 1k rpm. I can't see how this would affect the heat, though...

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Cavalier - Vibration - Chevrolet :: 1992 - Rumble And Vibrate While Idling In Drive

1992 Chevy Cavalier, about 120,000 miles. A few months ago my car has started to rumble and vibrate while idling in drive. It only occurs while I'm in drive and completely stopped. If I change to neutral or park, it immediately goes away. Also, if I'm in drive, keep my foot on the brake and give it a little gas, the vibration goes away. I've changed the spark plugs, had the throttle body cleaned (not very thoroughly) and my mechanic said my engine mounts look fine and to not worry too much about it. Is this a problem I can ignore as an inconvenience or should I put more effort into getting this fixed?

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Chevrolet - Silverado :: Screeching Noise From Crankshaft Pulley When Engine Is Warm And Idling

Have a 1992 5.7 litre silverado with a screeching noise from the crankshaft pulley when engine is warm and idling. Noise goes away when engine is accelerated. Noise remains on crank pulley when serpentine belt is off pulleys. Did replace tensioner pulley, alternator, and idler pulley. No noise noted when started cold. Serpentine belt is only weeks old no signs of damage. No rough idle or performance changes noted just a annoying noise similar to a turbo but only when no torque is applied.

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Corolla / Matrix 2009-13 :: Idle Slowly Drops From 650 To 600 When Stop And Engine Start To Vibrate

I recently bought a used 2010 Toyota Corolla s with around 79000 miles on it. It's an automatic and everything drives good but just one thing that has been annoying me. The problem is that when I come to a complete stop and stop there for a a while, the idle slowly drops from 650 to 600.

When this happens the car engine starts to vibrate excessively and you could feel it on your feet and steering wheel. When I turn a load on, the rpm rises and the vibration goes away.

I have cleaned the throttle body, checked the mounts and it's good, no cracks, cleaned MAF sensor, reset the idle by unplugging battery, took it in to the dealership and they said it is normal. I believe it's not normal.

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Prius (2004-09) :: Check Engine Light On When Warm Outside

Last year my check engine light came on a couple of times at the end of the summer but it went away and I can't remember how. Today was the warmest day of the year so far for us and my check engine light came on again. It seems to happens when it's warm, I'm accelerating and I think the A/C is on but I can't be 100% sure about that.

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