My '04 Santa Fe (135K miles) has been doing this for a little while.
Between 65 - 75 MPH on the highway, under acceleration, I experience what I can only describe as a "shudder".
I don't believe it's a wheel balance issue, because if I'm coasting or maintaining that speed everything is stable.
Ok here's the situation. 2004 Santa Fe 2.7 AWD 170,000 miles.
I recently had to replace the front passenger side Drive axle. That was a piece of cake. However, since then the car has developed a shudder when it comes to stop (felt like the shudder on acceleration that was fixed by the dealer with a reflash). Suddenly it got so bad that it stalls when put into gear with the brake on. It feels like it is not coming out of converter lockup.
When I drained the fluid I replaced it with Valvoline Import multi-vehicle full synthetic (it says it is spiII). I latter added another half quart of Castrol transmax import multi-vehicle (also spIII). Did I screw up my trans? Will a flush work? Or do I just need to replace the trans and torque converter?
We have an '03 Santa Fe (2.4L). We are the original owners.
About 18 months ago, one of our Ignition Coils cracked and caused a misfire when then engine was under load. I replaced the coil, wires, and plugs myself at that time.
Since that time, we have experienced intermittent engine jerking while at highway speeds. There does not seem to be any pattern, and it does not happen every time we drive it.
I took it to the dealer who diagnosed a valve cover leak. They replaced the gasket, one ignition coil, wires and plugs. The problem still happened intermittently after that. I brought it back to the dealer, who diagnosed a valve guide/seat leak. Oil is getting into the cylinder and fouling the plug they say.
I could not afford the fix (and was very dissatisfied by the service I received) so the dealer recommended to change the plugs every 3 - 5K miles to get me through. I was told this on 03/31/09 (125695 miles). I replaced the plugs, wires, and BOTH coils again at that time.
Last week @ 130K miles the engine jerked again. I replaced all four plugs again Sunday morning, but the ones that I pulled were NOT look oil fouled. I showed them to a mechanic friend and the guy at the auto parts store. Both agreed that the spark plugs looked almost new. Sunday evening, while driving on the freeway, the car jerked again!
Since this happened again SO soon after changing the plugs, I really have a hard time believing the valve guide diagnosis. Some possibilities I have seen/heard:
- Crank position sensor or camshaft sensor (This was replaced at 78K miles along with the all of the belts)
- Clogged fuel filter
- Bad O2 sensor
- Vacuum leak from the hose that is between the throttle body and the engine casing
- The dealer's valve seat suggestion
2002 Santa Fe 2.7L AWD automatic
She was on the highway this afternoon and was accelerating to merge in with traffic. Apparently the car just reved up without actually accelerating. She said it felt like she was in neutral. I've driven the car a few times over the last week and it has been running perfectly - No hesitation anywhere at any speed. There are no CELs (yet). It is probably worth mentioning that it has been raining HEAVILY here for the last 24-hours and I would not be the least bit surprised if she hit a few puddles on the way. I can just about guarantee the CPS has never been changed and am suspecting it may be a short in causing her problem.
I recently switched from stock rotors to a pair of SP slotted rotors. The pads are stock. I thoroughly followed the bedding process and had no problems until now. For the past 2 weeks I noticed brake shudder when stopping from highway speeds. My first reaction was that it was a warped rotor. Since it was a fairly new pair.
View 4 RepliesI have an '05 F150 5.4L with 110k miles on it. Bought it used about 2-3 years ago and have had on-going ignition system problems. The current problem is a significant shudder/shake/vibration that occurs when driving 50mph+ (easy to reproduce around 65-70) on the freeway, when starting up a minor, but noticeable incline. This is an incline that doesn't require much additional throttle, and this trouble occurs with cruise control on and off. the truck starts shuddering pretty rough during the incline. However, if I release the accelerator (and go up incline with slightly lower speed) or give lots of gas on accelerator the shudder usually stops. The shudder always clears after the incline when returning to flat road and just cruising.
This occurred on a recent trip a few times and I pulled the following codes (in order):
P0356 (once) : Ignition Coil F (6) Primary/Secondary Circuit Malfunction
P0302 (recurring): misfire on cylinder 2
I have since purchased and replaced the coil on #2. This did not resolve the problem. I have replaced coil on #6 in the last year...
Because I saw a suggestion somewhere on the net around this problem while searching, that this could be related to OD, I tried disabling OD and enabled OD on an incline today to test after replacing COP on #2 and it seemed to resolve the issue to turn OD off. Not sure if related...?
Other observation: Cab of truck often smells of gas just after starting the truck. Mentioned this to the shop, but they didn't find anything obvious.
Short history of codes and work that has been done:
Sometime in early 2011: Ford service dept did this work.
First failure was coil bad on #7. Tech swapped 7 & 8 to verify the problem followed the coil. Then when the problem DID follow the coil, he replaced #8 with new.
05/2011 MacKenzie Ford changed all plugs
12/2011 - swapped out COP on #7.
02/2012 - P0306 - Now, COP #6 is reported as bad.
November/December 2012
P2104 P Throttle Actuator Control (TAC) - Forced Idle
P2112 P TAC Stuck Close
P2111 TAC Stuck Open
I did throttle body clean - removed it and used TB cleaner. replaced...
Late December 2012 - while driving on freeway at speeds 50+, but easily reproduced around 60 after starting up a slight incline. symptom is heavy shudder/shake. Possibly resolved by turning OD off.
P0356 (once) : Ignition Coil F (6) Primary/Secondary Circuit Malfunction
P0302 (recurring) : Misfire on cylinder 2
So my 07 with 125k miles has had new rotors for about 50k miles or so, but for a while now when the brakes get hot it gets a violent shudder on braking at highway speeds....the odd part to me is nothing at lower speeds, and not always at higher speeds....do I just have warped rotors again? The rest of the front end I good and tight....
View 9 RepliesA while ago I had a '99 Ranger. Long bed, regular cab, 2wd, 5-speed, 2.3. I had really poor acceleration. I was used to Toyota pickups with the 2.4 22RE, and the Ranger was considerably slower to come to highway speeds.
So, I took it to two different dealers, and they told me "that's just the way they are." I guess I believed them and sold the truck. Now, I am kind of thinking about another Ranger. Do people here think the '99 2.3 has an acceleration problem? Are there certain years to avoid the I4 in a Ranger?
I have a 2007 Santa Fe with the 2.7L engine and 62K miles. At 65-70 mph I have a very noticeable miss. The check engine light has not come on and a scan at a Parts House shows no trouble codes.
View 15 RepliesI have a 2010 Santa Fe AWD, I notice that when I apply the brakes at 100 KM or higher I hear a 'thumping' noise, the noise is hard to describe, thumping is the best I could come up with, the noise goes away once the vehicle is down to 80 KM, why this is?
View 7 RepliesWhen I first bought my 2001 f150 a few mos ago there were no problems but I did notice once in a while it would give one little shudder when id accelerate. now all the sudden it shudders after around 20 mph all the way up to whatever the speed limit is. Then it smooths right out until I have to accelerate again. if I punch the gas and kick it down it will clear up but then it feels more like a surging going on.
I had the cruise set at 70 the other day and I had to slow down to merge to around 50 and when I hit resume it really started shaking bad and the service engine soon light flashed on and off for a few minutes then went off and hasn't came back on again. I took it to advance auto and no codes showed up. they said its probably the torque converter but after reading multiple forums I am not so sure now.
I recently had my 2013 Santa Fe Sport serviced at a dealer and finally remembered to tell them about the front windows wind noise at highway speeds. It has been ongoing for quite some time. When the service rep brought my vehicle back to me he told me that Hyundai was aware of the problem, and that it was caused by the moon roof. I did not see any recent posts to the forum or on the internet regarding the window noise, except for some older ones referencing noise related to the side view mirrors and adding insulation to them.
View 3 RepliesNoticed the seat shaking when at highway speeds or when you go over bumps in the road? When my seats are empty, they shake and make an annoying rattle, shakey noise. I had them looked at by Hyundai and was told that there was nothing that Hyundai was going to do to fix them. After battling that for a while, Hyundai did reimburse me a car payment for me to "live with it" and, quite frankly, to shut me up.
View 5 RepliesI now have an '01 Mountaineer with AWD and the 5.0. I have a strange vibration that only seems to happen when I accelerate as I get on the highway. I get up to speed and just as I let off on the throttle I get a vibration/shudder from the rear. Almost as if I ran over the rumble strip on the side of the highway. It's a short grrrr, then it goes away.
View 2 RepliesI have a 2002 Santa Fe 6cyl automatic GLS w/ 170k on it - great car - never a problem until about 20k miles ago, I started experiencing a shudder (like driving over a washboarded road) at 38-42 mph. If I accelerate quickly through this mph range (from 3rd to 4th gear), I can avoid it. Similarly, if I downshift back into 3rd, accelerate through and then upshift to 4th again at about 45mph, I can avoid it. It happens at a much lesser extent around 55-60mph. It has been to a reputable transmission shop that doesn't think its a tranny issue. Its been 4 days at a good mechanic and they can't find the problem. Its not throwing any codes and no other part of the vehicle seems to be affected. It has new tires/alignment less than 5k ago. I have suggested several things (ignition coil, torque converter, throttle control sensors) and they have checked these and more and don't find the problem.
View 9 RepliesWe have had had our Santa Fe for a year, done 38000 km and love it. The car will start up and drive around town fine but as soon as the engine is under load at highway speeds or driving up a hill it loses all power.
In Automatic when this happens the gear will drop back to third. You can switch it over to manual mode and slowly accelerate back up to around 80-90km/hour with your foot flat to the floor but the rpm don't get above around 2000 to 3000.
If you stop and turn the engine off for a minute or so, when you start again everything will appear to back to normal but after another minute or two the problem will be back. The engine malfunction light comes on and sometime it's flashing but at other times it's constant.
The car's been in at our local Hyundai dealer for a week but at this stage they still can't quite figure out the exact cause of the problem. The code they pulled out suggested it was the exhaust particulate filter (apparently quite an expensive part) so they replaced that but it didn't fix it. They've also replaced the fuel filter and some temperature sensors that are part of the particulate filter apparently but still no joy.
165k miles 4x4 6 speed, bone stock unmolested
Slowly progressing problem over 6 months. Occasional miss at highway speeds uphill has progressed to bucking and jerking during even gentle acceleration attempts.
I hadn't got my cam sensor recall done but no change after that procedure completed yesterday. Oil recently changed as well.
I have a torque pro but it never finds any fault codes even though 'service engine' light comes on sporadically. I'm not sure I'm operating it properly but it at least reads rpm when its running.
I'm contemplating the hutch mod but I'd like to have an official diagnosis beforehand if its possible in my case.
I have a 2003 Hyundai Sante Fe 2.7 v6. About 2 months ago I started the car and it was kind of a rough start. It usually starts right up. I was driving in the rain and when I would press the brakes the car would shudder like it wanted to turn off but the head lights and dash lights did not flicker. I had it towed to my mechanic. He found a broken vacum hose and replaced it. The car seemed fine.
Today it started up kinda rough and then would shudder and not accelerate no matter how hard I pressed on the gas pedal. It was also idling roughly.
I bought the car from a friend who was the first and only owner. She has ALL of the service records and took good care of it. It has about 120k miles on it. The spark plugs and battery are only about a year old. It has a half tank of gas. I checked all fluids, pulled a few plugs and they look fine too. Air filter is clean too.
I asked the previous owner if she had ever changed the fuel filter and she said she didn't think so. I reviewed the service records (assuming I have them all) and it doesn't look like it was ever done. I have run seafoam through it 3 times since I bought it last August. I change the oil regularly and rarely let the gas get below 1/4 tank.
It feels like its catching, or its off and then comes back on ?? No codes, none.
View 11 RepliesMy 2001 Buick Lesabre 3.8 loses power at highway speeds, sets a PO101 code (MAF sensor). I have replaced the MAF sensor 3 times, as well as the coolant temperature sensor, the crank position sensor, the throttle position sensor, the MAP sensor, the intake manifold gaskets (upper and lower) , the pcv valve, the egr valve, the Idle air control sensor. After cruising at highway speed for about 3 miles the car still loses power for about 20 seconds then gradually regains power only to repeat the fault again 3 or 4 miles down the road.
Otherwise the car has plenty of power quickly achieving 100+ mph going though the gears smoothly and normally. I have inspected the intake plenum and vacuum hoses for leaks and have found none, all in very good condition. The car ha 122,000 miles on it and has been well cared for, very clean under the hood with no leaks. I did reduce the egr chimney size to 3/8" while replacing the intake gaskets and that reduced the symptoms somewhat, i.e., the car only loses about 15 mph instead of dropping to about 25 mph before recovering.
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.