Sierra :: 1991 GMC 5.7 Surging While Driving At Constant Speed
This truck has 180km on it and runs fine except as of lately i have developed a surge while at constant speed. When i step on the gas it does not seem to happen.....it only happens when I reach a constant speed. The odd time it will surge at idle and the engine will rev up and down on its own also. When at highway speed it seems to not do this. The truck never dies completely....just surges slightly.
View 9 RepliesS-10 :: 4.3L Engine Misfires Or Hesitates At Constant Speed On Highway
My fathers truck starts, runs, idles fine but once on the highway at constant speed, the engine misfires or hesitates causing a small buck or jerk but continues on down the road. The SES light is on. He took it to O'Reilly and they put some kind of computer on it and (I think) it said misfire in a cylinder. He replaced one of four O2 sensors, pickup in the distributor (not sure what this is called), wires, and plugs with no cure. This problem is very strange as again, it only does it a constant speed; truck runs fine at idle, acceleration, deceleration, startup, etc. There may be a slight sulfur smell during idle and there is a decrease in gas mileage.
View 14 RepliesCelica :: 1991 - Surging At Constant Speed In The Range Of 10 - 50 Mph Or So
I have a 1991 celica gt 5sfe hatchback. I am getting a surging at constant speed, at idle it's fine as well as acceleration. It only does it when trying to maintain a constant speed in the range of 10-50 mph or so. It's feels like I'm pushing the gas and letting off repeatedly. I took it to get an emissions test and it failed on the low side test with high co2 reading, everything else is fine and one place couldn't do the test because the surging kept kicking the computer out since they have to keep it at a constant 15 mph speed. I think whatever is causing the surging is causing me to fail the low side emissions. Could it be the iecu?
View 10 RepliesFord 6.0L Power Stroke Diesel :: Subtle Engine Sound Changes While Driving At Highway Speeds - Surging
I've been noticing some weird, very subtle engine sound changes while driving at highway speeds lately. Something almost like surging, but not. I don't know how to describe it. I might try to make an audio recording next time I take it out so I can explain it.
Anyway, I don't know why but ICP popped into my head. Maybe, for some reason, the engine was varying ICP causing the surging sounds.
So I hooked up AE and did a test. I've attached a screen shot.
With my idle speed actuated as high as it will go, and ICP actuated as high as it can go, I can only get a pressure of about 1450 PSI. I always thought ICP should go higher than that. I seem to recall reading somewhere around 3600 PSI.
So am I misinformed, am I reading the data wrong or do I have a problem? How high should Injector Control Pressure go? I missed it in the screen shot, but ICP is actuated to 100%.
Passat (B5) :: 2003 - When Driving At Constant Speed The Engine Surges About Once Every Second Or Two
We have a 2003 Passat GLX, 43000 miles, V6, AWD. I've noticed recently that when driving at constant speed the engine will surge about once every second or two. It's very regular, and on a smooth road I can also notice a bump in the drive train, very similar to road bumps.
I've taken it to a dealer, since I believe it is a transmission issue, and therefor covered under warranty. There are no computer codes stored for faults in the transmission, they've said. However, they started by pursuing the fuel injection system (though no code was stored), and then wanted to fix a faulty coolant sensor (since found not to be faulty).
Touareg :: Transmission Surging When Driving On Flat Ground At A Constant Pace
This weekend I was driving home from my parents and noticed that on flat ground at a constant pace there seemed to be surging of some sort...Although I am not sure that surging is exactly what it was, but it is the best word to describe it.
Basically, if I kept my foot at an even speed (not accelerating or decelerating) I would get very subtle movement in what seemed to be either the differential or the transmission. No error codes were thrown and the battery gauge was spiked at 14 solid.
Elantra XD (2001-06) :: Engine Surging / Shift To Neutral RPMs Went To 1500
The car is an '05 elantra, 97,000 miles, auto., car is new to me. First time on the freeway today, 30 miles @75-85 mph, at the end of the off ramp I could feel it surging, shift to neutral rpm's went to 1500, hoss the gas and back to normal. On the return trip off ramp, went to neutral, jab the gas, everything OK. I'm going to clean the throttle blade, check things, etc.
View 3 RepliesElantra XD (2001-06) :: Sounds Like An Airplane When Driving On Highway
My car sounds like an airplane when I'm on the highway. It started a week ago. I don't have new tires or anything and it only starts when I'm going above 80 km/hr.
View 2 RepliesSanta Fe (CM - 2007-12) :: Vibration Comes And Go While Cruising At A Constant Speed On Highway
Our FWD Santa Fe Limited had a very noticeable vibration that started around 60mph. Oddly, the vibration will sometimes come and go while cruising at a constant speed on the highway. We went about 30k miles before we had time to get it into the shop.
I asked them to rotate and balance the tires and the vibration was noticeably reduced...initially. Now it's back!
The car has ~65k miles. All 4 Kumho tires match and I believe are original from the factory. I have kept all tires inflated properly.
Our car has the optional 18" wheels. Is it common for these to bend? What else could be the cause here?
Elantra XD (2001-06) :: Oil Light Popped On While Driving At Highway Speeds Of 55 - 60
The wife and I own a 2003 Hyundai Elantra with 163k miles.
We just had our oil changed and we are currently running 5/30 and the oil light came on about a week after the change. I stopped the car immediately and checked the oil level and it was fine and oil was super clean. So I jumped back in the car and the light was off. Drove down the road about 2-3 miles and the light came back on and stayed on. Today it stayed off for a good 5-10 min while driving at highway speeds of 55-60 and then it popped on. The car runs great and it's not running hot that I know of and doesn't sputter or anything.
I was wondering if it was a bad Oil Pressure Switch? Where are they located at in the motor? I just put 1k into it with new new belts, valve cover gasket, spark plugs, wires and tires.
Elantra XD (2001-06) :: Belt Squealing Noise When Driving On Highway - Overheating
2003 Hyundai Elantra.
Driving on the highway and thought I heard a belt squeal. Looked at temp gauge, overheating in the red. Stopped car. Antifreeze on passenger side sprayed around, hard to tell from where.
Waiting a while, put a good amount of water in it as there seemed to be no anti-freeze left. Drove a bit more and it started going up on temp gauge. Pulled off highway on an exit, temp gauge went back down before I could pull over.
So I continued on the highway. The temp gauge would go back up to 3/4, then I'd put it in neutral to cost to a better place to stop, and the gauge would go back to halfway.. continued this for several miles to get home. Never overheated again, but kept getting "hot"(3/4) and dropping back down to normal (1/2)...
Honda - Prelude :: Vibration Starts After Several Minutes Of Constant Highway Speed Travel
My 2001 Prelude (not SH) develops a vibration felt throughout the car and particularly the steering wheel after several minutes of constant highway (60 - 75 MPH) speed travel. Thought it might be a brake caliper sticking, but the car does not pull left or right. After 7 or 8 minutes of vibration, it stops and the ride is smooth as glass.
View 8 RepliesNissan :: Check Engine Light Came On Only When Driving At Highway Speed
My truck is a 1997 nissan pickup with. 254,000 miles. Check engine light come on. Only when I am at highway speed. As long as I am in city traffic, nothing I have a code scanner code (PO302) number 2 cylinder misfiring. I change spark plugs and wires and dist cap. But check engine light came back on. I put in shop they claim that they can't find nothing wrong. I guess I need to find a new mechanic.
View 3 RepliesCamry :: 2002 LE - Constant Vibration At Highway Speed / Can Feel In Feet And Steering Wheel
2002 Camry LE 4cyl. automatic. I bought this car with 7500 miles on it in 2010. It had been involved in a low speed parking lot collision and apparently the left front corner and front took the hit. It'd been repaired and looked like new when I bought it. It still had the factory tires on it, but they were 8 years old, so I put a set of new Kumho Solus' on it. This was a friend's mothers car, so I know the history of it.
The left front suspension has always felt odd to me. Nothing serious, but just "off." When backing up and turning it has a sort of wobbly feel on that corner at times. I've been assured by several mechanics that they can find no problems. It feels to me like maybe sometimes the strut piston sticks on that corner. Don't know if that ever happens or not, but that's the best description I can come up with!
It has always vibrated from 45 on up. It's not a hard shudder, but just a constant vibration at highway speed that you can feel in your feet and the steering wheel. I've had it balanced and re-balanced to no avail. Sometimes it gets a little better, sometimes worse, but it's never gone away. Recently it seems to be getting worse.
I put it up on jackstands and accelerated to 60, and it vibrates like the wheels are out of balance. Yesterday I replaced the Kumhos (they had bad road noise anyway) with Michelins. The Michelins cured the road noise problems and have a much better overall feel, but I've still got the balance problem.
Just put it up on jackstands again and spun it up, and I still have the same vibration!
What to look for? The car has just now turned over 35k miles. I'm wondering if the CV joint on that left side was damaged and is causing the vibration. I've got new wheels as well instead of the factory steel rims. Also, with the car up on stands, the wheels spin true. No bent hub, etc.
Elantra GD (2013+) :: Check Engine Light Came On When Driving Down The Highway
I just purchased a 2013 Elantra GT, 3 days ago. I was driving down the highway and my check engine light came on. There is only 480 miles on my car! I know it's not a gas cap. I haven't even put gas in it since I drove it off the lot. Is there a way to check for the code thrown without a scanner? I use to have a jeep liberty and I could click the key over 3 times an the code would pop up.
View 24 RepliesFord 7.3L Power Stroke (1999-2003) :: Surging Noise While Driving At Highway Speeds
I have a 45 min drive to work every day, all highway. Lately on the way home in the afternoon I have been experiencing a surging noise that seems to just happen while I'm doing hwy speeds. It sounds to me like the fan is tuning on and off. Is that possible? It comes on for a few min. And then off again. I have new icp ipr cps. New oil and filter and fuel filter.
Also I'm still having a battery light on and off issue while I'm driving. Is possible the two issues are connected. I plane on doing extensive search for a bad wire this weekend. Batteries and alternator have checked out and are fairly new.
C/K :: 1998 - RPMs Will Surge By About 500 - 600 While Driving At Constant Speed
A few days ago my 98 C1500 started having what I can only imagine is some type of torque converter issue. While driving at a constant speed the RPM will surge by about 500-600. This surge does not coincide with any type of acceleration, it's more like the converter is letting go and the RPM's just rise and fall back down. The fluctuations also seem to stop after about 15 minutes of normal driving. I have had no real noticeable transmission issues. At first i assumed it was my tranny fluid just breaking down so to get me home I used a bottle of Lucas.
The bottle seemed to do the trick for only a couple of days and now the problem is back...no better, no worse. The only difference I have noticed is that before the addition of the Lucas my fluid looked perfect and now it seems there is a bit of varnish. No smell, nothing seems burnt, just a little dirty. I haven't changed the tranny fluid for about 70k and the truck now has roughly 160K on it. My concern is that if I do change it the transmission will crap completely and I'll be on the hook for a rebuild.
Camry :: 2002 V6 Bucking / Jerking When Driving At A Constant Speed 60 Mph Or Over
I have a 2002 camry with 212000 miles on it and just lately when driving at a constant speed 60 mph or over it starts to buck or jerk a little bit and you can feel it in the seat. I've had the throttle body cleaned and put in a new mass air flow sensor and it hasn't fixed it yet. What might be causing this? It doesn't do it when accelerating or slowing down.
View 9 RepliesHonda - Accord :: 1996 V6 Stuttering When Driving At A Constant Speed
My 1996 Honda Accord V6 has a stuttering problem. It only happens (or is only noticeable) when driving at a constant speed. It is most noticeable when driving in the 45 - 55 mph range. It feels like the engine has millisecond breaks in power. And this does not happen all the time. Some days, it drives just fine with no problems. It idles fine. The problem is not noticeable, if there at all, during acceleration.
One other piece of information that might - or might not - be relevant is that the tachometer seems to be out of its mind. It bounces all over the place up and down. This also does not happen all the time, and it seems to me, though I'm not 100% certain, that the stuttering problem only happens when the tach is crazy..I have had no luck getting a mechanic to diagnose the problem. They claim the tach problem is totally unrelated.