Santa Fe (CM - 2007-12) :: 2009 - Subtle Fluctuations Or Surges In Engine Under Both Acceleration And Cruising Speed
I recently bought an '09 Santa Fe Limited. I want to love the vehicle, but I've got a problem with how it drives. Basically, here are the symptoms:
1. Engine RMPs dance around about 200 RPMs at idle. (I was told this is normal. I don't think it should be.)
2. Under normal acceleration, it bogs down immediately after shifting into 2nd gear and after a couple of seconds there is a surge and acceleration seems "normal."
3. Occasionally, I feel subtle fluctuations or surges in the engine under both acceleration and/or cruising speed (any speed, really.) It's like I'm feathering the throttle when I know I'm not. This is most pronounced when under a load, such as taking off from a stop sign at the bottom of a hill and accelerating up the hill.
So, here's what the dealer has done to address the issue.
1. According to the Carfax report, the previous owner had the throttle position sensor replaced at 22,000 miles and again at 27,000 miles. I bought the vehicle with just over 30,000 miles (certified pre-owned).
2. On the day that I bought the vehicle, I noticed the issue and the service manager took it for a test drive with me. He told me it was wind buffeting that I was feeling. I thought that was bunk, but with it being a higher profile vehicle, it put some doubt in my mind. He went ahead and flashed something to reset the adaptive learning module that supposedly adjusts something in the engine based on how you drive. It seemed better after that, so I went ahead and bought it.
3. After a few weeks of driving it, it became clear to me that it was definitely not wind buffeting, so I scheduled a service appt. It was taken for an "extensive" test drive (according to the service record) with a diagnostic computer connected. Apparently, the service technician said they were only able to find one small blip with the mass airflow sensor, so they replaced it and called it fixed. I should also note that at no time, have any codes ever shown up when they check for error codes.
4. Although it seem slightly better, the problem still exists. Just for kicks, I dumped a bottle of Seafoam in the gas tank with my last fill up, but that doesn't seem to have made any difference.
Golf/GTI VI :: 2011 TDI - Strange Fluctuations In Temp When Idling At A Stoplight
So it's been REALLY cold here in MA. for the first time this winter. I've noticed that once my engine warms up to temp (160), the needle drops back down to about 140-150 idling at a stoplight, and takes a while to get back up to temp. Maybe this is normal for the diesel? I've just never noticed this in any of my previous VW gassers. Coolant level is fine, engine runs fine, so maybe its just the brutal cold weather??
View 6 RepliesIS F (2008-2014) :: 2012 - Cruising Range On Full Tank Only 169 Miles?
Just bought a used 2012 IS-F 1-owner with 37k miles. Clean Carfax and AutoCheck - very, very clean car.
Test drove it with my wife, fell instantly in love, and signed the paperwork. As part of the dealer delivery, they gave a full tank of gas and washed/waxed the car.
While enjoying the 8 mile drive home in 5:00 traffic, regular speeds of 40-50 mph without any start/stop on the freeway and surface roads, I noticed that the range (distance to empty) on the full tank was only 169 miles!
I realize this is a hi performance V8 - but c'mon! Is there something wrong with the car?
Lexus IS 2014+ :: IS350 AWD Rough Idling In Drive
As winter comes in full force to NYC I've been experiencing some rough idle on my is350 AWD even after warming up my car for about 3-5 min. For ex. when I am at a stop light and have my foot depressed on the brake it feels as if the engine is revving higher than usual as if the acceleration pedal is lightly being depressed while I am braking. Is it just due to the cold weather?
View 11 RepliesFord F-150 (2009-2014) :: 2013 5.0 - Idling Rough On Start Up?
I've only had my '13 STX with the 5.0 for a little over a month now, but it seems like the past few days, something's caught my attention. As soon as I start my truck when cold, the idling engine seems to have more vibration than normal, which is to say I can notice a distinct vibration in the cab. It only does this for about 10-15 seconds, and then the vibration goes away when it idles down. The truck still runs and drives fine, and I only notice this when I start the truck without it already being warmed up. I don't recall noticing this the first few weeks I owned the truck, but I also wonder if I'm over-analyzing matters as well.
View 5 RepliesPassat (B6) :: 2008 - Engine Has Been Idling Rough And The CEL Came On
I have an 08 Passat 2.0T with 44k on it, just did the 40k service around 42k. This past Friday I filled up from almost completely empty, and later that day and ever since the engine has been idling rough and the CEL came on. Gas cap has been checked already.
Should I wait to go to the Stealership until I've burned this tank of gas out? Is there anything else I can do that you can think of?
Ford F-150 (2004-2008) :: Knocking When Idling Very Rough
My truck is idling terribly and knocks while doing so, little info is
The truck has 170k miles, I just bought it about two months ago and it was running perfect, drove it to the beach two or three times (4 hour drive) no problems whatsoever. Two weeks ago I noticed it start rocking a bit at idle ONLY when warm, check engine light came on so I ran the code and it said the Cam shaft positioning sensor was bad so I replaced both of those, then the next code I got was for the vct solenoids, replaced both of those and the problem is still persisting. It is odd to me in the fact that when its cold, it runs flawlessly, no problem accelerating/idling/maintaining speed/smoke nothing at all.
As soon as it gets warm it will still do everything flawlessly EXCEPT idle. the idle rpm is around 300-400 and it rocks and knocks terribly.. If i am stopped and I apply some throttle in park or nuetral, just enough to get the rpm up to around 800-900, its perfectly fine. no more rocking no more knocking but as soon as i let my foot off the gas it goes right back to feeling like its going to fly out from underneath the hood.
So my question is why is this? What on earth is going on here? and how do I fix it? And why is there not a manual idle control. Ford place said there was likely damage to the head and recommended a full engine replacement.
Ford F-150 (2004-2008) :: 2007 - Idling Rough And Stumbling A Bit
I have a 2007 F-150. Here is the story....
Last summer the truck was idling rough and seemed to be stumbling a bit. Took it to the dealership and had it diagnosed. Had a mis-fire code on cylinders 1 and 3. I was told to do the spark plugs and clean the MAF. After replacing all plugs and cleaning the MAF the truck seemed to run better but it didnt last long before it started doing the same thing. My Edge Evolution started showing misfire codes in cylinders 1 and 3 again and the truck is stumbling like crazy. Here is what i have done:
1. Swapped the plugs from cyl. 1 and 3 with cyl. 5 and 7 and the problem followed.
2. I replaced the bad plugs with new ones and i no longer get a code for those cylinders but the truck is still acting the same.
Now I am getting two codes saying the system is running rich on bank 1 and 2 and a misfire code in cylinder 4. I cleaned the K&N filter and replaced the MAF but it is still the same. The truck stumbles horribly under a load and has NO power.
History:
2007 F-150 5.4L Lariat
75K miles +/-
K&N Filter
Edge Evolution (has been kept in stock mode)
new spark plugs last summer
new MAF (this week)
New Fuel filter (two summers ago)
Santa Fe (CM - 2007-12) :: 2008 - Cylinder 3 Misfire / Vehicle Is Idling Rough
I have a cylinder 3 misfire and the vehicle is idling rough so I took it to the deal because I have a power terrain warranty. They're telling me I'll need a new manifold and plenum, coil pack, plugs, and gasket. Could this be accurate? I don't want to get screwed over...
View 9 RepliesPassat (B5) :: 1999 - A/C Works When Cruising But Not When Idling
My 1999 Passat is acting up (yet again!). This time it's the A/C. I've noticed it works fine during normal driving, but if I am stuck in traffic and the engine is idling then it blows warm.
View 2 RepliesFord F-150 (2004-2008) :: 2006 5.4L Idling Very Rough And Had A Terrible Miss Around 1200 RPM
I have a 2005 5.4 F-150. First off it came to me on a rollback because the owner tried to replace his plugs after he noticed it missing and of course broke one off. So after I extracted the plug from #8 cylinder and installed a new plug I cranked the truck and it was idling very rough and had a terrible miss around 1200rpm. I pulled the codes and got several misfire codes and ignition coil faults on #5,6 and 7 cylinder. Popped in 3 known good coils in these 3 cylinders with no difference.
On Mode 6 on my diagnostic software you could watch the misfire count steadily increase on #7 and every now and then there would be a single misfire on #5 and 6. It also had several codes for O2 sensors biased, stuck rich on that bank. Well since it had a brand new plug and coil, I popped an injector in #7 and havent had a single misfire on it since and it also started idling alot better and all the O2 codes went away. The problem I am having now is #5, 6 and now 8 will randomly misfire, sometimes build up a steady count on one of them, sometimes just skip around between them.
The truck has brand new plugs in all 8 and new coils on this bank also. The truck has 115,000 on it and does have some cam phaser noise on the bank causing the problem, but its not too terribly bad, I have heard alot worse. My problem is something on that bank only as the passenger side bank is fine. I am wanting to say cam phaser now since this is the side with the noise. I have changed them before but have just experienced the noise, never one running like this because of it. Possibly jumped time a little?
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?
View 3 RepliesFord 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?
Phaeton :: Low RPM Cruising / Rough Downshift
My V8 NAR Phaeton started with a problem today which is exhibited at low RPM cruising. It is as if an invisible person is tapping the accelerator rhythmically. For example, when going 30MPH with my foot steady on the accelerator, the car will fluctuate between 1300rpm and 1600 rpm, and if I happen to brake during one of these surges I will experience a rough downshift. A complete VAG Com scan revealed nothing code-wise. the car seems to shift fine when accelerating, and according to the center display there are no gear shifts occurring when these RPM fluctuations occur. If I manually select a gear and cruise at a higher RPM, these fluctuations do not occur.
If my description is not clear, I could possibly post a video. I don't have much luck with the search function on this forum, just want to make sure this isn't a well known issue before I trouble with video.
The car is 2004, 113K miles. It has the original batteries which will be replaced in 2 weeks time, but I have not been having any electrical problems.
Rough - Mazda - 626 :: 1999 - Rough Idling But Runs Fine At Higher RPM
This problem has been getting worse over the last 2 years. When the car starts it idles fine at about 1000 RPM. As soon as it warms up, it starts to idle rough, between 500 and 750 RPM. It almost quits running. As soon as you give the car some gas it runs just fine. About 3 weeks ago I got a "Engine Lean" check engine light error. I reset the system and have not gotten the error again. Since then I have: changed the MAF cleaned the EGR (made sure it closes completely and ohm out the coils in the actuator) changed the O2 meter on the exhaust manifold cleaned out the throttle body Ohmed out the air idle controller. What I should check next. I was planning to check the fuel pressure in case it is a fuel system problem. It is a 1999 ....
View 5 RepliesMercury - Mountaineer :: 2002 - Transmission Seems Rough / Thud Randomly When Step On Gas While Cruising
I have a 2002 Mercury Mountaineer with 150K+ miles on it. Lately the transmission seems "rough" as in it seems to 'thud' randomly when I step on the gas while cruising. I think it's trying to change gears, but I'm not sure. It runs okay, but I feel like I should start thinking about rebuilding the transmission. I have access to a full set of tools and mechanics on hand and about a weeks worth of time. Think I can do it?
View 8 RepliesFord Exhaust System :: Loud Pop While Cruising At 60 Mph - Muffler Blowout And Rough Engine
Yesterday, I heard a loud "pop" while cruising at 60mph. Pull into a rest stop and and discovered a hole in the muffler. The engine now idled roughly, but seem to smooth out about 2000 rpm.
Question for the experts: can the loss of a muffler cause the engine to run rough? It's a 460cid in a '77 F350.
Ford F-150 (2009-2014) :: Light Vibration When Cruising At Speed
Been having a very light vibration when cruising at speed as well as on some lower speed shifts and finally crawled under the truck today to check for drivetrain play. Other than the amazingly soft and sloppy transmission mount I noticed a TON of play in the driveshaft transmission yolk. Didn't feel like the u-joint but actually the tailshaft yolk. Dealer said on the phone they have seen this on a few of the newer trucks and it *should* be covered under the power train warranty. I have the subercab with the 1 piece aluminum driveshaft.
View 4 RepliesLexus IS 2014+ :: Loud Thump Followed By Continuous Thumps When Cruising On Highway
On my way home from work tonight cruising on the highway, heard a loud thump followed by continuous thumps thereafter. Knowing this wasn't good pulled over to find a nice big nail in my passenger side front tire, great. thought I could make it home, I was about 6 exits away...one exit later nail flew out and tire was loosing air.
- luckily for me, I had a friend who lived nearby the exit the nail flew off and put on the spare.... now my question is I noticed some camber wear on the tire.. 15,200 miles to be exact on the stock oem bridgestones.
- I know these tires are complete crap but... is this camber wear normal? I've seen other posts about it but, is it the tires? or something to do with the car? I am pretty sure my alignment is fine. If I buy a new set of tires eventually will this end up happening again? Trying to gain some knowledge for the future.
Also is it true that with AWD cars, if you change one tire you have to change all 4? because it might mess up the drivetrain or something, at least that's what I was told.