Car is stock and I seem to be getting a lot of jerking when I am on and off of the throttle peddle. It feels like a combination of sloppy motor mounts and a throttle response issue. What may be causing this? I am willing to bet that the motor mounts are partly to blame but it seems that there is more going on here.
View 24 RepliesI just bought an '08 r32 a few days ago. '08 with 17k on the odometer.
At low speeds (parking lot or stop and go traffic), giving it light throttle, the car lurches as if someone was giving it throttle and letting go.
Is this what is known as the hiccup problem (fuel tank vent) or the mechatronics problem?
1987 323 Mazda, manual transmission. Recently replaced motor and transmission and air conditioner, all used. Prior to replacement vehicle burned oil and was leaking transmission fluid and air conditioner wasn't working. Air conditioner was leaking and mechanic fixed the leak. First time I started it after that, there were a few big puffs of white smoke. Drove it about a week. Putting it in first was a little rough (but that was a problem with the transmission we used for replacement from another old car of ours we junked). but no other problems. Then we noticed it was leaking quite a bit of antifreeze and we could see it leaking onto the engine. We were putting antifreeze in it everyday.
I drive around 80 miles a day. After about a week, I had been driving it about 40 miles that day, I backed it into a driveway to turn around and when I put it in first, it was jerking and lurching. Drove it a carlength and it died. No check engine light. No overheating. Started it again and it bucked a few times while driving another carlength and died again. Then would start and die, start and die, start and die. No movement. Called the tow truck and took it to the mechanic. He said it was the fuel pump and fuel filter and replaced both those. He also fixed the antifreeze leak which was a loose clamp.
The next morning I drove it, it still lurched a couple times and a couple puffs of white smoke. Then I drove it about 10 miles, no problem. Parked it for about 2 hours and started it again. No problem initially, but then when I got to first stop sign in about a block, it lurched a bit. Next stop sign, another lurch. Then on the interstate a couple more small lurches, but not bad. After 10 miles I cruised to a stop and put it in neutral (to leave the engine on) and it died. No check engine light. Just the charge light came on. I had been playing the radio and radio was fine.
I started it again and drove straight to mechanic (about 2 miles). It lurched and bucked some along the way, but no white smoke. He replaced distributor but he said it didn't work. He said it was worse than before. I've looked at some similar problems on the net and here's what I found:
ground wire from the battery to the body and from engine to frame
EGR valve
Crankshaft position sensor
Powertrain control module (I don't even know if this car has one of those)idle air control
I don't know if mechanic has looked at any of the above.
I have a 2006 Subaru Forester automatic with about 40,000 miles on it. When it gets cold out, I notice that when I first start driving the car, it jerks/lurches and makes a loud noise when shifting from first to second and second to third. When the car warms up after driving for awhile, it doesn't do it anymore. It's much colder here (high today of zero), the car is doing this much more often. I brought it to the dealer and they completely flushed the transmission fluid (which they said looked yellow instead of red/orange??), but it is still making the noise and having trouble shifting in the cold. They said need to take the transmission apart, so I've been leary about taking it back. My husband thinks I should just drive it until it dies and then get a new transmission if needed.
View 1 RepliesI am at a complete loss as to what could be wrong with my 2002 VW Gold Cabrio GLX automatic transmission. In the last month the car has been to 3 different mechanics & none of them could solve this problem. The basic scenario: The car starts up fine. The engine will run & everything works fine (AC, radio lights etc).
If I put the car in Drive or reverse...it will idle & move. However, the moment I touch the gas pedal, whether in reverse or Drive, the car jerks & dies. If I put it in park & try to start it up again, the engine will turn over & the car will start, but the moment I touch that gas pedal again, same thing, jerks & dies.
Things that have been replaced so far: ignition coil, fuel pump, the catalytic converter has been removed. spark plugs replaced. Now they are saying that the problem is electrical & are working with the fuzes & wires. The car ran fine for 3+ years & I've had no problem with it.
Yesterday the mechanic called me & said the car was ready for pick-up. I go over there, pay him, I reverse out of the driveway & the minute I press the gas, it jerks & dies. Is this problem really electrical? Or is this third mechanic also grasping at straws?
Issue on my wife's 2002 SC430. Recently ran into the well-documented disappearing acceleration caused by one of the trifecta of sensors on the throttle (TPS, APPS, and Throttle motor). Replaced the throttle position sensor and seemed to resolve issue. As of about a week ago, however, the car has developed a hiccup that I can't diagnose. Here's what I've recorded and done so far:
Symptoms:
-Hesitation at 1800 or 2300(?) RPM under light throttle and increasing load (often on uphills).
-Throttle down-blip of 100-200 rpm momentarily, only lasts ~1 sec
-Noticable lurch to vehicle, slows down slightly, results in 0.08G accelerometer reading when kicks back in.
-Change in engine exhaust sound as if in C-gate gears on a downhill (sounds like engine braking).
-Sometimes happens repeatedly in quick succession - up to 8 times in 10 seconds.
-Not speed dependent
-Overall performance is fine, not sluggish or hesitating when you stomp on it.
-Intermittant issue, not replicable, happens at random.
-No error codes thrown, no CEL, no DSP lights.
-Consistent -14.7psi vacuum registering on OBDII
Actions taken:
-Recently replaced and tuned throttle position sensor
-Seafoam on a nearly empty tank for 3 mi, half-full tank for 40mi
-Italian tune-up
-Disassembled and cleaned MAF
-Cleaned air filter (K&N)
-Reset computer (battery grounded for 10 min)
So... the question is, what the heck is this? Here are a few thoughts of what to do next in order of easiest/most likely/least expensive:
-Remove ABS relay and check performance (maybe TCS is hitting brakes a little?)
-Check all vacuum lines
-Seafoam cleaning through vacuum lines
-Remove, disassemble and clean TB assembly
-Test continuity on throttle body motor
-Test continuity on VVT solenoids
-Test continuity on full range of APP Sensor
-Replace VVT filters
-Replace VVT solenoids
-Check spark plug torque?
I have searched a decent amount on this and it seems like there is a whole list of items that could cause these problems. The car is a 2008 Passat 2.0T with the tiptronic. It is the early 2008 so it still has the FSI motor. It only has 53k on it and literally just came out of warranty a month or two before this all started happening.
It all started with the CEL coming on and the went into limp mode. We shut it off and turned it back on, the car went into limp mode again but upon the 3rd restart the car started and ran just fine. Then for a few weeks we just had a CEL (I don't know what code it was because I never scanned it at the time). Now as of lately the car is have a terrible rough idle, and at stops it will start kinda shaking and lurching forward. Sometimes it will also have a noticeable misfire upon start up. Also after going at highway speeds for some time the car will start to produce a squealing noise when not producing boost.
A few days ago I scanned it and these codes came back:
P0110
P0101
P0102
P0104
P0108
P0171
The first 5 IIRC are related to misfires and the P0171 is a lean code.
At first I thought this was the PCV valve because I had read about the lurching and the squeal that someone else had from that but after reading up more on things I am worried the P0171 is from the cam follower.
At this point I am just very tired of hearing my wife constantly complaining about the car. I want to try and figure this out without throwing part after part at it. I can't afford to buy items just to find out they aren't fixing it.
I've got an '04 VW Golf that has recently taken to occasional bouts of no throttle response from the accelerator pedal. This has happened a handful of times during the past few months and until this morning occured only while driving on the highway at a constant rate of speed (~58-60mph). What happens is the engine will start to decelerate as though I've taken my foot off the gas but my foot hasn't moved off of the accelerator. The car's a manual transmission and for no good reason I usually shift into 4th gear (out of 5th) slap down the accelerator pedal a couple time to rev the engine while the cluth is depressed between gears and the accelerator will wake up and I'll get throttle response again and all's well. This morning it happened twice on the highway and once in first gear starting from a stop at an intersection. I'm worried I may not make it home... This is Minnesota and it's very cold -- could it have something to do with the temperature?
View 19 RepliesI've noticed the 2013 Corolla has a second+ gap between the moment you press the pedal and the engine RPMs actually rise. Most often, the car jerks as the RPMs rise too fast to keep up with my foot.
In fact, if I press the pedal all the way to the floor and release it quickly enough, the engine doesn't even react.
I have a 2003 Passat Wagon, V6, with a little over 80,000 miles that has developed a problem that I have not been able to get fixed: after the engine has warmed up, when driving at under 2000 rpm, the car jerks when light throttle is applied. I could also describe it as a thump or shudder. There is a small blip in the tachometer when it jerks. If I give it enough gas to cause the transmission to shift up, it does not jerk, nor does it do it over 2000 rpm. It recently had it's 80,000 mile service and runs very strong and smoothly when given enough gas.
My dealer couldn't figure what was wrong, and after they consulted with VW decided that I must have put in some bad gas. The problem was to have gone away after 5 or 6 tanks of good gas. After that didn't solve the problem, I went to an independent repair shop. They told me that it couldn't be misfire because there were no codes registered. Their theory is that it is problem with the transmission, whereby with light throttle the transmission is told to shift but then slips right back down, thus the jerkiness. They couldn't offer a solution, however. What to do about it?
A family member said that the front ball bearings are bad. This is what is going on; when I am driving and release the gas pedal and/or brake pedal, it jerks. When I am turning, left or right, to park in a parking space, it sounds and feels like the tire is going to break (when turning right to park, right tire; turning in left, left tire). I don't want to get taken advantage of when I go to a mechanic.
View 14 RepliesI have a 1998 Toyota Camry v6 with about 90k miles on it. When I am driving and hold the gas pedal steady the car jerks and hesitates. If I press down on the gas I can power through the problem. It also does this when I set the cruise control. There is no check engine light on.
View 4 RepliesI've had my 08 r32 for about two months now, it has 93k on the clock. The dsg is great in everyway except in low gears/speeds. Especiially in traffic, it lurches forward or slows down rapidly like it dosant know weather to shift down to first or stay in second. Jumpy when starting off in first like I have to feather the gas pedal just right so it doesn't jump off the Line.
I took it into vw service center last week for diognostics test, they said everything was fine trouble code wise but they wii send the results to vw tech center and ask for advice. I got a call back today they want to do a cycle test, test drive the car with reset values and then cycle 6 times. From cool back upto operating temp etc and find out the results.
Its a 2007 f150 v6. has 55,000 miles. just got her new tires for Christmas. the truck has doing this for awhile. when you use the brakes the pedal pulsates and the truck jerks back and forth. Feels like bent rotor or something. I've been doing it about a year keeps getting worse. Last year I had the rotors turned and put new pads on got a little better. But not for long continued to get worse again. So I just bought new rotors and pads and still sucks. I thought it could be a bent rim so I just rotated the tires and still no better. Where should i go from here? calipers? something in the front end loose?
View 4 RepliesIt's hard to drive the Mk6 smoothly at low speeds. Creeping along at a snails pace the car lurches forward while trying to crawl along at about 5 mph in first gear ( 6 speed manual ).
I remember reading about replacing something that will cure this 'hiccup' in throttle response. What the part is? Is it a diverter valve or something ?
First ever failure with a Toyota. We limped home at 25mph this morning. No response with throttle pedal input, but the throttle body did operate in fail safe mode. Throttle pedal checks out with omhs check across the terminals per Toyota manual. I'm looking at having the car transported 45 miles to nearest dealer. I can change the tb out myself but not sure of the electronics. Does the computer have to be programed for a new tb?
View 14 RepliesToday when driving my 2003 Camry(148,000miles), I lost all throttle response. Car was driving normal, I stopped at stop sign, tried to go and got NO response when applying the gas pedal. car will idle fine at about 1000 RPM's. When pushing gas pedal car does nothing.
View 10 RepliesIs there anyway we can adjust our throttle or gas pedal? Cause when I press down on gas, it doesn't open until about an inch down the pedal. Pretty much, I just want the throttle to be more responsive.
View 7 RepliesMy car 2006 Sonata GLS 3.3 litre's throttle pedal stopped responding and the check engine light turned on I scanned the codes came back bad TPS and Pedal Position Sensor so I changed both disconnected the positive battery terminal but still no throughout pedal response and I'm getting P2106, P1295, P0638 and pending codes P0222 and P2135. I'm at a complete loss as to what to do.
View 9 RepliesMy girlfriends Toyota Echo has been giving her problems it seems. She says that it will randomly not respond to the pedal being pushed. She's not great with cars, but says she doesn't hear it revving. I was thinking dirty fuel filter, but I would think it would be running rough all the time if it was clogged? What it could be?
View 3 RepliesMy 2007 Chevy Impala with the 6-cyl engine is, overall, a nice car. One thing I just do not like about it, though, is the electronic throttle. There is a quite annoying lag between acceleration on the gas pedal and response from the car It isn't just my car, all the Impalas and other cars I test drove when shopping for the car are the same way. Even the 2007 Buick with the last year of the 3.8 L engine had a touch of lag time compared to the 1987 Olds Cierra I had with its 3.8 L engine and mechanical throttle. I'm no lead foot but when I want acceleration I want it now and not later. Guess I got spoiled from 20 years driving the '87 with its giddy up and go.
When making left turns without a traffic light, I have to allow a much wider open slot in oncoming traffic than I ever did since driving the 1973 Toyota Corolla with its four weak hamsters under the hood. I'm not the only person I've heard gripe about electronic throttle. I have to wonder what about drive by wire is superior to mechanical throttle if it slows down the throttle response so noticably???