Car runs just fine except I do notice the RPM's moving a bit up while I'm cruising at a steady speed. Almost as if the clutch is slipping. It's an Auto, btw.
View 2 RepliesI have a 2000 Tahoe with the 5.3L V-8, 351,000 (yes that is correct) miles. Runs great except it has recently developed a stutter, hesitation, skip, I don't really know how to describe it, under acceleration or at steady speed. This is an intermittent problem and it is driving me batty. The only codes are a P0420, maybe after 350k miles it needs replaced? Would that possibly cause this issue, or am I looking at something more sinister?
View 2 RepliesWhile going a steady speed, my speedometer will fluctuate up and down around 3 miles per hour. It will happen at any speed.
View 3 RepliesWanted to query the collective wisdom here: last few days, been getting a strong grinding/vibration rolling along, but only under steady speed or slowing down. Early in any trip its barely noticeable, but after an hour on the highway it can resonate pretty strongly. Gets worse with speed. Goes away completely under acceleration.
Doesn't get better or worse with brake application, stays exactly the same if I pop the tranny into neutral and roll along.
2008 B6 Sedan (trendline in Canada) - 103000 km (roughly 60000 miles)
Couple of possibly related observations: tires are down to their last 1/3 of life (but fairly even wear across all 4), brakes do need attention (bit of a pulse on application), and when I was switching from snows to summers I noticed a small splash of grease on the driver side CV boot - couldn't see a split but I don't think it should have been there.
My thoughts: possibly CV joint going, or really need new rotors...
Its peak summer here and temperatures are around 50c. Recently I am experiencing a strange AC behavior! While driving, AC is blowing very cold air but while stationary air get little less cold and it feels sweaty... Also accelerating car makes AC more cold than cruising on normal speed...
I am wondering what it could be.... I had golf IV and never experienced it even it even parked under 50c summer afternoon.... Two weeks back, they have replaced my AC compressor valve... It could be a fan?
A few months ago I had the oil changed in my 06 Passat and they forgot to reset the service engine display. When I stopped by later, the regular guy was not there so the mechanic tried to reset it...after which , when the car starts moving, the odometer disappears and is replaced with the speed in kilometers. Nothing important, the trip odometer is still there but I think I would prefer the original setting.How to get my miles back?
View 3 RepliesI have a 2000 Neon with about 170K miles on it. with in the last 2 weeks it has been having a problem with acceleration. When i start to drive the RPMs will get up to 4 before it will start to move. Also when i am drive and need to pick up speed the RPMs will also go up to about 4 before it starts to pick up speed, but will drop back down when the speed goes up. I have found a little oil in the spark plug tubes and will be changing the seals out, and I have cleaned to MAP sensor as will. What is going on with my acceleration.
View 3 RepliesJust curious. Are my RPM's running high? Currently I'm running 3000 rpm's at 76 mph. Is that high? Someone told me it was. (My speedometer shows I'm running 80mph but both my gps show 76mph, stock tires, 1.8T). Pretty sure I'm in range.
View 2 Replies2000 neon automatic. My wife was complaining about the rpms jumping around when on the highway going about 65mph. The rpms are around 3000 and jump very slightly up and down and you can hear the engine tone change when it happens. Checked tran fluid and it was low about 3/4 of a quart and added some fluid, changed spark plugs and wires and the problem is still there. Doesn't happen all the time. She says it seems to only do this if the car has been sitting for a few hours or longer. There is an code for the downstream sensor which needs to be changed.
View 2 RepliesI am having issues with my 2003 F150 4.6L truck. It just happened today when driving home. It started fine and then when I increased the speed and the rpms went up to about 2000rpms, the engine seemed to slip into neutral. I stepped on the gas but the truck would not accelerate, it was just coasting. I pulled over to the side of the road and came to a stop, but didn't shut off the engine.
After a few seconds, I proceeded to give it some gas, and it engaged in gear and accelerated...until I got to about 25mph & rpms increased to about 2000 again. It did the same exact thing....seemed to shift back to neutral so that I could not accelerate. I had to keep pulling over to come to a stop, and then slowly proceed again. I wasn't too far from home & I made it. What this issue could be?
So i think I have a bad EGR valve cause I've eliminated o2 sensors, MAF, Spark plugs, coils, vac leaks, Fuel filter, and Fuel injectors. Truck throws P0172 and p0175 code, surges in RPM's at 10 MPH when hold steady on gas pedal, exhaust makes a popping sound like popping popcorn. I reset the PCM and unhooked the MAF and it ran a little better but still get the other symptoms.
View 2 RepliesOccasionally I can feel light jerking when cruising steadily at around 2200 rpm. for a second the rpms increase by ~50, not enough even to notice any change in speed, and then goes back where it was. it is as if the clutch was slipping.
My first thought was MAF so took one from a working car but problem did not go away.
A minor thing that may be unrelated: the transmission also sometimes doesn't set shiftpoints properly, i.e., when accelerating uphill, it would go from 1st to 2nd ok, then when it reaches the point to shift to 3rd, the 3rd gear stays only for a second or so, and then shifts to 4th.
So I disconnected the MAF sensor altogether and the problem went away! My conclusion was then that it must be the wiring between ECU and MAF, so checked the cables between ECU and MAF, found all resistances within spec (below 2.5 Ohm). Since the problem is intermittent, the resistance of the cables doesn't tell much.
Checked with vag-com and there are no codes. Where to go from there? 2003 AVH (auto)...
I just have a situation that I would like some insight into. I have a 2004 T-reg V6 that jerks while at a constant speed (usually around 40-50 mph). It does it both while cruise is engaged and disengaged. You can also hear a rhythmic "clunk"ing. The jerking and clunking stop if you accelerate or decelerate.
BTW the car is still under full aftermarket warranty from the dealership where we bought it so I would want to try to figure out what this is before the warranty ends.
Our Egg will occasionally surge at steady speeds - i.e it will jerk fore and aft with no change in accelerator pedal settings. This is an intermittent problem that seems worse when ambient temperatures are low. It isn't yet annoying enough to warrant a trip to the dealer (they seem clueless about this car anyway!).
View 12 RepliesIt started snowing going down to 10-15 degrees during school hours. and whenever i go to turn my car on it starts but immediately the RPMs rise to about 1300 and then immediately drops to about 300 then immediately back up to 1200 but stays steady until it warms up then drops to normal about 700. i understand the cold start when it idles high until it warms up but why does it drop then come back up?
View 3 RepliesMy car (1994 TBird, LX) has an intermittent problem where the rpm's surge while I'm cruising down the freeway. I've noticed that it happens more often on an incline, and it also happens more during rush hour when I have to frequently slow down and the accelerate again.
If I had to guess, I think it's the TCC Solenoid that's the issue. Would replacing this likely solve the problem? Or would I be better served having my mechanic unplug it? My car is giving error codes to replace the camshaft position sensor (related?), and while important, I need to address the rpm issue first as it's getting progressively worse. Tranny fluid is clean, although I've only owned the car for 2 months so I don't know when it was last replaced.
I can't afford a huge repair, but I have a certified mechanic who's always done right by me, but he's not the best at diagnosis. I'd feel better if I could whittle down the issues and then just tell him what to fix.
Ok, I was driving down the interstate in my 2002 Ford Escape XLT 4X4 and I noticed my rpm's reved to about 5000 from my cruising rpm of 2200 and it was as if it went into neutral. I coasted with engine running fine to the right shoulder and called a tow truck to the nearest dealer. No reverse, D, 2 or 1 only Park that worked.
View 14 RepliesThis is a 2002 Toyota Camry 4cyl with 249157 miles. I drove it 140 miles to work, noticed no issues, parked it, and got back in after 10 hours. On the way back I noticed a noise that got louder the faster I went. It is independent of the engine revolutions (I put the car in neutral and "coasted"). The noise is completely dependent on the speed of my forward movement.
So I put the car up and in gear and around 25/30 mph, the sound shows up and gets worse as the speed increases. It does not get worse in turns. And it is very consistent- not clunking or clicking, just a steady sounds almost like strong wind over an object. I replaced the wheel bearings in both front wheel assemblies about a year and a half ago.
[URL] .... Mazda 2.3 Liter 4 cyl. accelerates fine in all gears, but once you reach a steady speed in any gear, it jerks and bumps. Does not run smooth unless you are accelerating?
View 2 RepliesI've noticed the Prius V engine is running at very low RPM in ECO mode at steady speed of about 65km/h (40mph). Fuel consumption vary between about 4-5L/100km (58 - 47mpg) and RPM is showing about 1100+
I usually see RPM of about 1100 to 1400+ which is very good; so I'm not surprised this engine is very fuel efficient.
My 1990 nissan pathfinder 4x4 has a bad vibration shakes all over when driving at steady speed around 50 to 55 mph, it goes away when you let up on the gas and when you accelerate.
View 4 Replies