2003 hyundai santa fe 2.4l ... When driving on highway speeds of 65 miles hour, I take foot of the accelerator and I put it back on to gain speed , it starts jerking or bagging. Also in the city when I press accelerator seems to have no power. I have no codes or check engine light on, what could it be?
View 2 RepliesWe 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
Ford F-150, 1994 : intermittent problem. going down highway, foot on the gas. At times, will press accelerator to go faster but nothing happens, like clog somewhere. Sometimes, with foot still on gas, i will hear a popping sound coming from under the truck, (under the engine?, or drivers seat). Usually 4-5 pops, sometimes none. But after each pop, car accelerates slightly, as if it is a slight clearing, until finally, as if some clog was opened up, the car plunges forward, so i then take my foot off the gas. Sounds like either problem with fuel getting to the engine or a problem with the exhaust.
View 4 RepliesWhat may have wrong with my trans on my truck... this is what its doing, I am able to put in drive and drive it for so long then its like the truck is in neutral and doesn't gain or maintain speed. but i can turn the truck off and put it in park and restart the truck and it will go again?? that is how i got it home....
the fluid is burnt now but wasn't that bad until the trans started doing this. I have pulled off the pan and inspected the filter and it does have metal debris in it, pulling the valve body off tonight before work (work 3rd shift) to inspect that, i think it has something to do with the solenoids or valve body because it actually moves but then quits until i restart the truck. Also does the transfer case use fluid from the transmission? or are the fluids separated between the 2.
Truck has 4.0L SOHC with a 5R55E in it 4WD...
I changed the purge valve because it was hard to fill up. It idles fine but when I drive it at 40 and just cruise without a load on engine it starts to jerk or misfire. I'm going to change plugs even though they don't look bad and wires.
View 2 RepliesOn my '03 Santa Fe 2.7, this has happened twice, with 500 or so uneventful miles in between. At highway speed, it just all of a sudden loses power and will only go about 50 mph with accelerator to the floor. When you stop & put in neutral, it only revs to about 3000 rpm, with pedal to the floor -yet idles fine. Then when you shut it down, wait a few minutes & start it back up, it's fine. Is this a fuel problem or what?
View 6 RepliesThis has happened a few times when the car jerks, check engine light comes on and seemingly goes into limp mode. Cannot engage 4 wd either. I leave the car for while then come back and the engine light is off and the car works normally.
View 2 RepliesWhile driving at between 20-45 MPH in warm weather only IDEAL SPEED IS 38-42 .. At times the car jerks forward and downward like, even slowing down at red light: Seems like the whole problem is coming from transmission! (Sensors)? The car is cursed. Example:
1- The symptom seems like your driving in drive position then all of sudden it shifts to low gear
2- When driving normal then it seems like the car shifts to neutral and the RPMs shoot up to 3-4
3- Sometimes when stopped the steering wheel shakes bad.
The car runs normal in winter time? Doesn't do it everyday.
I have a 2005 Sante Fe 2.7 4WD with 168K miles. Last week I'm driving at 45 mph with cruise control on and it just downshifted to 3rd and then back to 4th in about 3 seconds.
It did this on the highway at 55 as well. I used the manual shift option and it works perfectly. It still shifts smoothly in auto mode but around every 5 minutes or so it will downshift and back again.
Here's what I know.
1. Using automatic mode in Drive it shifts smoothly from a stop to speed but then downshifts and back occasionally. It does this with Cruise Control on and off.
2. Using the manual mode and shifting on my own works perfectly. Even when the cruise control is on it doesn't skip or downshift.
What it could be?
Below is a link to a video showing what my 2003 Hyundai Elantra is doing. It is idling very rough (Jerks at idle) and can actually be heard in the exhaust. I think it may be miss firing?? Does not do it at speeds over 60. Under 60 it can be felt at times, but only at low RPMs. [URL] ....
View 16 RepliesI have a 2001 F150XLT 4x4, V8 Triton engine with offroad package that just rolled over 119,000 miles that just started giving me problems 2 weeks ago. When I accelerate at speeds above 40 mph the truck surges or jerks ( the best way i can describe it ) sporadically unitil I get to cruising speed. If I'm cruising at say 70 mph and go to pass some one and accelerate it does it again. The transmission feels like it shifts smoothly thru all the gears and there is no whining sounds, transmission sounds normal. There is no check engine light, so I assume a diagnostic check might not show anything. Advice from guys at work say possible ignition module, coil pack, transfer case ??? It never feels like the truck wants to stall and it never feels sluggish when accelerating like there is a fuel problem.
View 14 Replies2004 3.5L Santa Fe ... My vehicle has about 156k and has a new problem. Occasionally, there is a howling / whining that seems to occur occasionally once the engine is warm. When this happens, the directional can light but will not blink. Same for the hazard light.
Replaced the alternator only about 2 months ago, Checked the p/s pump and it is good and no fluid loss from the reservoir. Been a great vehicle with only a minimal of issues since new. The first time this happened, the car had been on a 15 mile run. It sat for about 20 min afterward when I returned home. After re-starting it to run another errand, the whining / howling began. This lasted about a mile and went away about 2 blocks from my house on my return.
My 2007 Hyundai Accent Automatic has been, what I'd call jerking, off and on when I go to accelerate, either when speeding up to merge on to the interstate/coming out of a turn/or being very slow to accelerate after a stop, like at a red light. About a month ago, it wouldn't start after I filled it up with gas and the check engine light finally came on, so I took it a mechanic. They kept it for a day, got it duplicate the not starting problem, and said it was the "fuel gauge." (looking this up on the internet leaves me questing, because nothing about the definition of a fuel gauge sounds like anything that would cause it to do what it was doing, but they told me that's what the computer alerted as the code for what was wrong.)
It was working fine now when I fill it up with gas, but occasionally still jerks upon accelerating. I haven't looked at the gear gauge to see if it's not changing gears, as I thought at first it might be something misfiring, but I had the spark plugs changed probably a year ago or less. Just based on a quick internet search, I think it might have something to do with the fuel pump. I'd describe the jerking as just that, the car physically jerks until either the gear changes, or it gets power or something, and then once it does it it doesn't accelerate quickly after being at a complete stop, and the engine seems to get louder and while it does move, it seems like when I push the gas petal it has a hard time getting going.
I have a 2004 Ford Escape that has never caused any issues...except now. I have recently noticed that occasionally when I have my foot on the brake, my car makes a forward jerking motion. It never slips out of gear. It just jerks forward. It's not all the time either. Also this morning, my husband went to start the car and while it was still in park, he said it did the same thing. Like I said, the car never shifts out of gear and I never hear grinding gears when I do shift.
View 1 RepliesHave a used 2003 Santa Fe /w 2.4 . 150.000 miles .
It shuts down at any speed . seems to cut out mostly when cornering and applying the brakes. Check engine lite stays on . code p401 cnf
My santa fe is throwing a vss code. I was trying to replace it but was not sure exactly where it was. Is it the one right under the air filter box or is that a crankshaft position sensor or some other one?
View 12 RepliesDriving an '03 Hyundai Elantra. I've noticed that occasionally when turning and also when driving at around 55mph or so, there is a metallic rattling sound that seems to be coming from the front driver side of the car. What this could be?
View 3 Replies01 F-150 7700 ed.
I have a 4R100 Tranny with 139K miles. It has been rebuilt. Ever since the rebuild (over 10 yrs ago), if I park the truck for a week or so or more, I will end up with a decent size puddle of trans fluid underneath the truck. I took it back to the shop that did the rebuild a couple times, but they could never find anything. It leaks enough to where my fluid level drops enough to cause the transmission to slip in a U-turn because the pickup tube becomes uncovered. I have a couple theories, but am wanting to hear from the collective.
Theory #1 When I park it on my slightly sloped driveway I don't regularly use the parking brake, so it rests on the gears, which eventually forces fluid out an overflow or breather tube.
Theory #2 (a very thin one) due to pressure changes associated with the weather, fluid is somehow siphoned out a breather tube due to some blockage internally in the tranny to where it's not equalizing with the outside air and has a high pressure within... ( i kinda laugh at myself for this one, but I am at a loss over the source of this)
Blower only works on high speed. From what I have read the problem is either the switch or the motor resistor. I am leaning toward the resistor which is behind the glove box. Where can I find directions for removing the Glove box?
View 1 RepliesI bought a 2004 Hyundai Santa Fe 2.7L AWD about 5-6 months ago. It has close to 120,000 miles and has a terrible vibration at highway speeds. It starts around 55-60mph and gets increasingly worse as speed increases. The steering wheel originally vibrated quite violently, but after changing the "front axles" it resolved only the vibration in the steering wheel
I took it to a local shop we trust, they changed the "front axles", all spark plugs, ignition coils, timing belt, transmission fluid change, and a o2 sensor.
I changed out a serpentine belt, tensioner, and idler pulley (due to a squeak), another o2 sensor, and tried to change the transfer case + rear differentials fluid. I couldn't change them because the fill plug was very stuck... we used a propane torch and a large socket wrench.
Anyways, after the front axles were replaced, the steering wheel got significantly better, there is however some vibration through it. After they were replaced it did not fix the vibration shaking the whole car. I've noticed that when you let your foot off the accelerator all the way, the vibration stops. When you step on the accelerator again it starts shaking very bad, and then begins to get slightly better. The vibration has a rhythmic timing to it. It seems like it pulsates stronger, then softer every 1/2 second or so
Also I have had the wheels balanced 3 times. I doubt it's the tires, unless a tire is out of round. My rotors also do not seem to be warped. When I brake, there is no shaking/shimmying. I was wondering if it could be the engine mounts? This vibration is very annoying, since I have to drive long trips sometimes. Other than this problem I like this car and would love to see it fixed.
I'm having a problem with my 2003 Elantra. Occasionally it hesitates (acts like it is going to run out of gas). When it does this the a/c stops blowing cold. Lasts for 3-4 minutes. Most recent time it had 1/2 tank of gas. I also have a problem putting gas in. I have to fill it very slowly or the gas pump will keep clicking off. I don't know if they are related or not. What fuel problem will affect the a/c?
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