Celica :: 2000 Toyota GT Sputtering / Jerking - Code P0420

I have a problem that has being going on with my 2000 toyota celica gt has been sputtering/jerking when going at a constant speed of about 60 mph. The problem is interment. I have changed everything from cam sensor when it came up on the scanner. Also changed the fuel filter and fuel pump. I changed the spark plugs. No luck the problem went away for about 2 weeks when I changed the fuel pump and filter but it came back. I got it scanned and the only code that comes up is P0420 which is a catalytic converter code. I have no clue where to go from here.

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Accent LC (2000-05) :: Jerking /die Speed When Engine Gets Warms Or With AC On

My hyundai accent 2005, have problem of jerks /die speed after engine get warm, also increase if AC on, when I starts car in morning it works great and no problem but after 3 or 5 km as engine get hotter speed kills,but it happens more or worst in evening at 4 when returning from office and temp is 45+ in riyadh, saudiarabia.

I change air filter, fuel filter, spark plugs, spark cables, also use fuel injector cleaner but still problem remains, I want to tell you its start when I changed engine valve cover gasket due to oil leak, as I changed this problem suddenly appeared, I went to other mechanic but he told me the problem not in valve cover gasket,it is somewhere else he clean my throttle body ,and its works for 2 day only that i felt the problem solved but after two days problem appeared again,there is no engine light power on for any electronic malfunctioning.

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Accent LC (2000-05) :: Sputtering Quite A Bit In All Gears / CEL With Error Codes

Recently bought a `01 Accent 5 speed.. First question . How do I tell if its the 1.5 or 1.6 ? That will really point me in a good start. Ha... Ok.. Check engine light is on and I found a paper in the glove box with some of the codes wrong with it.. The one I focused on was telling me the fuel system was to lean . blah blah blah... Dont remember the exact code as I felt that my research was good and I replaced the MAF sensor... Didnt clear the code...

Also it was sputtering quite a bit in all gears mainly at low rpms. I did change the fuel filter , checked plugs and wires etc.. Now I replaced the MAF sensor and it has not solved the problem.. Took it to have it rescanned and have been given codes p1127 and p0136 .. both seem to relate to the Bank 1 sensor 2 O2 sensor. question is I have saw the "upstream" sensor located right below the exhaust manifold but did not see a second sensor?

From what I have gathered sensor 1 does the most work, so I`m curious if these 2 sensors are interchangeable? Could I buy the downstream sensor and if that does not solve my problem , take it out on try it in the upstream sensor? Also do you really feel as though just changing that sensor will "cure" my sputtering issue? the car only has 88k on it and seems to be in good shape otherwise.. I really need this check engine light problem fixed so I can get inspection..

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Accent LC (2000-05) :: Stalls At Low Speed / No Coughing Or Sputtering

3 times now in the last week, my 2000 accent has stalled. each time it was at a low idle, slow moving speed. I was rolling up to a red light twice, and gliding into a parking spot the other. There was no coughing or sputtering. It just stopped. Each time, after about 20minutes or so, the car fires right up. it happened twice today after about 4 miles of driving. If the car sits for a day without running (on an off day from work) its a bit hard to start sometimes, but not consistently. Does this sound like a Crankshaft position sensor? or possible a fuel filter?

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Accent LC (2000-05) :: 2002 - Jerking / Stalling While In First And Second Gears If Accelerate Too Quickly

My standard 2002 accent is undriveable and at the mechanic right now (100,000km). For the past few weeks the car has driven very jerky. While in first and second gears if i accelerate too quickly it just jerks/slips and has very little power.

Yesterday the check engine light came on and i got codes P0300, P0302, P0303...misfire in cylinders 2 and 3. Checked this forum and decided to buy new spark plugs (last replaced plugs and wires 1.5 years ago). Got into the car and could go more than a block because it was jerking and then kept stalling. Replaced the sparkplugs and nothing changed. Had it towed to the mechanic...after a few hours he said he had cleaned the exhaust manifold and it was driving fine. I picked it up and a block away it stalled again.

The mechanic now says 3 of my fuel injectors need to be replaced and the fourth will probably go soon and it will be about $700 to fix. Does this sound right for these codes?

I called hyundai parts and they told me each injector is $236...he also told me he doubted they had to be replaced cause he has never seen an accent have fuel injectors replaced and also they rarely sell these injectors, he said it was probably something electrical.

I have found 4 injectors on ebay for $200 but is this really the problem? The mechanic says it is 100% the problem. But from reading the forum I dont think so.

Also wanted to add that i often noticed the smell of burning plastic. Smoke seems to be coming from spark plug area when i notice the smell but nothing looks burnt/melted.

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Accent LC (2000-05) :: AC Causing Sputtering / Backfire And Check Engine Light

2001 GL 1.5 Litre. Car occasionally hesitates a little with AC off, but runs pretty well. But with the air conditioner on?

Stalls about 50% of time when backing with A/C on. From stoplights, sputters all the way through intersections with A/C on, sometimes backfires. On a few occasions, the Check Engine light will blink on and off while it's doing this. After it gains a little speed/rpm, though, it's all good again, light goes back off.

Had full tune-up just before we bought it 4,000 miles ago. Air filter clean. Not sensors, because the CEL goes back off by itself. What the heck? How could the A/C cause a backfire?

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Ford F-150 (2004-2008) :: 2007 - Sputtering And Jerking - Power Loss?

i have an 07 ford f 150 5,4 liter. at speeds between 45 and 55 it has like a sputtering and jerking loss of power. I had a computer hooked up to it and it said fuel pump replaced it but it is still doing it, what this might be.

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Ford 7.3L Power Stroke (1999-2003) :: Black Smoke / Jerking / Sputtering Now No Start

I have had a problem where truck would start jerking and sputtering in a certain town at low speeds. Today it happened in a new place. Barely got it to start back up. Was running rough after the puff of black smoke. Its stranded at a gas station. Recently replaced my sending unit. Was running good. Clean gas tank. Fuel lines tight. Where should I begin? I have an ICP sensor in the glove box. Truck wouldn't start.

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4Runner/GX470 :: 1997 Auto - Hesitate Between Shifting Gears / Sputtering And Jerking Motion Momentarily

I have a 97 4runner Automatic that as your driving it hesitates between shifting its gears. Most prominently happens around 80km/hr shifting between gears.

Its a sort of soft sputtering/jerking motion momentarily. It does shift into the gear and does drive fine once its in the gear. My check engine light is on as well now....

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Accent LC (2000-05) :: Trans Shifts Hard Into Second And Won't Go Into Overdrive When First Started

I have the p0734 and p0732 codes. Thing is it shifts hard into second and wont go into overdrive when first started. After about ten minutes of drive time you shut it off and turn it back on and the thing shifts perfectly. No hard shifts and overdrive works then check engine light turns off. The pulse generators have been replaced when i purchased car. It is an 02 accent with 90,000 miles.

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Accent LC (2000-05) :: Gears Started Slipping - RPMs Kept On Revving Up

Just the other day I was driving my car till I've noticed the gears started slipping. At first it was having some issues shifting through the gears (automatic transmission btw). As soon as I got off the highway, I parked in a parking lot just to check underneath the hood. Everything looked fine, went to pull out of the parking lot, no reverse. The gears started to slip up really bad. I noticed that the RPM's kept on reving up and wouldn't go any faster than 20mph. I went to an advance auto parts to get automatic transmission fluid. Still having the same issue and no reverse either. I had to park the car at a location to get it towed back to my house. Some people are saying my transmission is bad, some say it could be a real simple fix. Where to start diagnosing this issue. The car was driving normally until last Monday. My question is where should I start to check and what can I do to see if the transmission is completely shot??

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Accent LC (2000-05) :: Started Kind Of Rough Then Knocking / Tapping

I own a 2001 Accent 1.6, auto. 150,000 well-taken-care-of miles. New plugs/wires/timing belt/coolant flush 10,000 miles ago. Most recent oil change was with Shell Rotella T5 (I believe 10w-30 blend) and Purolator PureOne filter, 4-5,000 miles ago. It does not burn any oil, and runs very well. It has never been low on oil, revved high, or abused in the 10,000 miles I've owned it (except an ebrake u-turn on a dirt road to scare the wife )

The engine has always had a mild tick when cold, that goes away within about 30 seconds. Normal, from what I could tell. Also, it has always had a tick from roughly 1500-idle when releasing the gas, in neutral. Again, seems fairly normal for a little engine, I figured just some valve noise.

This morning I started the car (sat overnight) and it idled a bit rough for about 20 seconds, and I noticed that the ticking from before was now closer to a knocking/tapping, nowhere NEAR the horribleness of a spun rod on my WRX . But it was still a bit alarming. It never really quieted down, but as I rev, the sound goes away completely above 2k, and the flutter when I release the throttle is louder than before.

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Accent LC (2000-05) :: Engine Not Getting Started - Battery Charged Completely

My hyundai accent 2005 is not starting at all. The battery is charged but the engine is not starting when i try to key the ignition. I had keyyed in continuously around 20 to 30 times but it just doesnt start. When i try to key in fully, the engine makes a sound and chokes.

I was told by someone that my spark plugs in the vehicle were wrong i.e. the genuine spark plugs were for hyundai elantra and not hyundai accent. the spark plugs were in vehicle for around 2 months. Can wrong spark plugs cause vehicle starting problems?

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Accent LC (2000-05) :: CEL Came On / Cylinder 4 Misfire - Exhaust Started Sounding Loud

I just bought a 03 accent the same day i bought it the CEL came on got it read and it was cylinder 4 misfire. took it to the garage the dealer i bought it from takes it to he said there was a little water around the boot in that weird little channel area under the cover he said he cleaned it up dried all out then reset the code and it was good, for a little about 2 weeks later it comes on again i get it read and it says cy 4 misfire again but also P0133 (o2 sensor bank 1 sensor 1) and i cannot remember exactly but i think the CEL came on after the exhaust started sounding loud, like it has one of those ricer mufflers on it.

Well I jacked up the car today and looked the only thing i saw was after the first cat right before the braided flex pipe there is this weird "shield" looking piece on the underside of the exhaust pipe dunno if its really supposed to be there or what it is for but from somewhere under that piece i can see exhaust coming out(its cold right now) also the flex piece is kinda blackened like its had exhaust fumes blowing on it for a while. i cant imagine why this would be a normal thing but i have never worked on hyunda before. i am thinking if there is some sort of "leak" there that is why the o2 code is showing. i am stumped, esp on the cy 4 misfire all sparks and wires look good i pulled each wire with it running and it bogs down til i plug it back in.

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Accent LC (2000-05) :: Check Engine Light Came On / Code P0740 - Car Started To Choke

while scraping ice off the windshield this morning with the car warming up, it started to choke, engine light came on. Used my OBD reader and found only one code, that being p0740. Cleared the code and all was fine after that, it drives the same way it always has and nothing feels different, revs are the same shifts gears the same. I know it had something to do with the torque converter clutch.

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Accent LC (2000-05) :: 2004 - Automatic Transmission All Of A Sudden Started Slipping While Driving

My 2004 Accent transmission with 145k miles all of a sudden started slipping while driving. It would be fine until i needed to slow down and then step on the gas again. It wouldn't catch right and it would slip. At first the pull of the slip was very slight and at times now it is very rough. My check engine light does not turn on when it slips slightly, but only when it has a really rough slip will it turn on. I had it checked at the local advance auto parts and i was told it has a 4th gear ratio that is off. The only thing that confuses me is that when i turn the car off and on it resets and works fine, that is until it slips again. If i drive carefully it usually wont slip. Could it be an electrical problem?? I changed my speed sensor when my car had about 132k miles because it went out, i replaced my ignition coils, new spark plugs/wires, tranny oil change, and filter change.

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Accent LC (2000-05) :: Transmission Started Running Rough / Idling Higher Than Normal

Owning a Hyundai. I have a problem and it seems to be pretty common but haven't gotten anywhere with it yet. Last week my 2004 accent 1.6 manual transmission started running rough. It was idling higher than normal and while driving would not go past a certain rpm (about 2500 if I had to guess,no tach). On the way home from work it was running this way and then started badly misfiring and shut off, when attempted to restart it would not. I pulled the codes with a scanner and got p2400, p0562, and p0121. I charged the battery and replaced the throttle position sensor, still won't start. I can hear the fuel pump kicking on when I turn on the ignition. Also found the ecu 1 fuse blown, replaced it and continued to attempt to start with no luck, fuse was blown again. Like I said I haven't owned the car long and I don't know much about it. I am not sure where to go from here and I don't know how all these symptoms are tied together.

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Accent LC (2000-05) :: 1.5L Engine Started Making Strange Noise That Sounds Like Sewing Machine

I own hyundai 2000, 1.5L. About 5 days ago the engine started making strange noise that sounds like sewing machine.

I went to my garage and they said that its the hydraulic valve lifters and that I should replace all of them(12 total).

My question is, what can happened if I wont replace them? can I postpone the replacing for a few months or it can cause damage?

By the way, I heard that the noise from hydraulic valve lifters can start due to bad oil, I had 20W50 so I changed today the oil to 15W40(manufacturer recommendation) and the oil filter and still got the noises.

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Accent LC (2000-05) :: 2001 GL Started Revving When Driving During Traffic Hour - Transmission Slipping?

I have a 2001 Accent GL 1.6L Automatic.

Yesterday it started acting up on the freeway. I was driving about 50 during traffic hour when it started revving. I got off the freeway and moved to 35mph on surface streets, the revving continued at lower speeds but much worse (4-5k rpms going 10-15mpg). Doesn't seem to do it in idle or park. If i shut the car off it'll drive fine for a while then start acting up but when I was driving, after awhile, it did return to normal.

What could cause the problem? TPS? Transmission? Sensor of some sort?

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