Camry :: 2002 - Intermittent Misfire / Hesitation Under Load And At Idle With AC On

So I have had my 02' Camry for a little over a year. Love the car, it is a 2.4L SE with a 5-speed manual. Recently it has developed this mystery misfire/hesitation under a load and at idle with the AC on. I replaced the plugs with OEM Toyota Iridium and it seemed to clear it up for about a month, but now has come back. If I start the car and turn on the AC it will intermittently start to miss but not only when the compressor is engaged and it does it every now and then under a load specifically in 4th or 5th gear under a load with lower RPM's (under 2000).

The check engine light is not on and hasn't as much as even flashed on at any time so there must not be any hard misfire codes. I want to stop by Autozone and see if they will scan it to find any stored codes but haven't had time. I would think that if it was a coil pack that it would be a hard misfire. I'm stumped. This car is in great condition...no oil leaks, interior is near perfect (replaced a worn shift knob, and door panel pieces around the window switch). Also car has 160k miles.

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Hyundai - Elantra :: 2008 - Distinct Hesitation When Accelerating From Speeds Of 10 To 15 Mph

I have owned this car from new and it currently has 32k miles. The only fuel used has been 85 octane or occasionally a tank of 93 octane. There is a distinct hesitation when accelerating from speeds of 10 to 15 mph and I do not believe it is due to the transmission shifting. I did move to my current state,California, from Pennsylvania and was told by my local Hyundai dealer service department that because California has a different gasoline formulation from most other states as well as a summer and winter blend to reduce emissions it is recommended to run a bottle of injector cleaner every 15k miles.

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Subaru - Forester :: 2002 - Revs In Idle / Hesitation On Accelerating

My subaru forester, 2002, with low mileage (40K) had routine maintenance 2 mos ago. Now sounds like it revs when in idle, and today began hesitating when I accelerate (a few seconds or so). I plan to take it in but wonder if there's insight before I go in cold (I know nothing about cars). Read on forums could be 02 sensor.

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Elantra XD (2001-06) :: Rough Idle And Hesitation - Stalls Sometimes

2002 elantra hesitates and sometimes stalls staring from rest. Worse when cold but still sluggish after warm up. Where do I start?

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Ford Escape / Hybrid :: 2004 - Intermittent Rough / Low Idle / Misfire On Startup

My g/f's 2004 Ford Escape (3.0L V6 AWD 112,000mi) is acting up. After a full day of sitting, with the second half of it raining steadily, she was driving her Escape and it was acting funny (miss-firing, she said). The engine light came on and soon began blinking. She got to my house shortly after it started this. We left it and I drove for the day. Later that night, I drove it and it seemed fine. The engine light was on, but not flashing anymore.

The next day I took it my friend that was a Saturn mechanic and now working at a KIA dealership (same owner as the former Saturn and current Buick/GMC and Chevy Dealer). It ran fine for me. So he tries to scan it, his Mac Tools scanner won't read it. The KIA scanner wouldn't read it. I drove it the Ford dealer up the road. They said they couldn't get to it until after lunch, I just want the codes read. They re-iterated, and I told them to pound salt and went to an independent shop where I know a guy. They read it right away for me. "Mis-fire on start-up" & "Cylinder 4 Mis-fire." were the two codes stored. He cleared them.

She got the tune up basics (plugs, wires, air filter, etc) and did the complete tune-up herself yesterday. (I was impressed). She put 94 in the tank and some fuel system cleaner in it as well. She said there's been no change and today I finally saw what it was doing. Sometimes during idling at a stop light, the RPMs will drop to almost zero, the lights dim but so far it has not stalled. It'll do this for several seconds, then correct itself and idle normally.

Currently, the engine light has not come back on. She's thinking coil pack (each cylinder has a coil on these engines) on #4. She wants to switch it out with #1 and see if the problem follows. I think that might uncover the cause, or it could be the battery. It's the original, never been replaced and has a lot of miles on it, but it survived this past winter, without trouble. In my experience, most batteries crap out due to age in the fall when the cold snaps start.

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Hyundai - Elantra :: 2002 - Revving At Idle

I have a 2002 Hyundai Elantra that is exhibiting some strange behavior at idle.It wants to rev from 1500 to 3000 rpm, then back down, over and over again, every two seconds or so. This does not occur when the car is in drive or reverse; it purrs along at a consistent 1200 rpm.It all started with overheating and a water pump change, which was completed and reassembled.Then on startup, we began getting this revving. We double and triple checked the timing belt. We sprayed plenty of carb/choke cleaner in the areas of the vacuum hoses searching for a leak to no avail. Whenever we hookup the OBD code reader, there are no codes.Why does my car want to challenge everyone to a drag race, and what is causing this?

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Elantra HD (2006-10) :: Rough Idle When Cold / Slight Misfire

My moms has a 2010 Elantra with 30,000kms on the clock, and we have noticed since new when the vehicle is started cold in the morning it seems to run rough for about 30-60 seconds then stabilizes.

It's almost like it has a slight misfire, or slight fuel flooded from sitting overnight. Now if course we have taken it to the dealership twice for this issue and dropped it off overnight for a cold start, and both times they cannot re-produce the problem.......surprise.

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Elantra XD (2001-06) :: Cylinder 2 Misfire / Rough Idle Especially After Fill Ups

I have a 2001 Elantra with 170K miles. well taken care of. I've been having a rough idle issue for some time now. The car idles very rough. I checked for codes and I got the cylinder 2 misfire code (P0302)...

I started out and replaced the plugs and wires, no solution...
I replaced the coil packs, no solution...
I replaced the MAP sensor, no solution...
I figured it may be no to low compression, so I did a compression test and all cylinders came back normal, still no solution...
I figured it might be a dirty injector, so I poured some seafoam in the gas tank, and no solution...

So my next step is to switch out the injector. Is there anything I am overlooking?

Here's the big thing that is happening too... Everytime I fill up the gas tank, I turn the car on and it idles even rougher. Like if you talk while sitting in the car, you sound like Chevy Chase when he is on the vibrating bed with Beverly D'Angelo in the movie vacation! LOL. It slowly goes away after 10-15 minutes of driving. All this rough running engine ONLY happens at idle, otherwise it runs very smoothly.

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Camry :: 2002 Toyota V4 Rough Idle When Stopped And Accelerating

2002 Toyota Camry
2.4 V4

My car has developed a rough idle when stopped and when accelerating. When I got the CEL, I had the codes read at Advance Auto.

The codes are P0301, P0302, P0303, P1349.

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Ford Ranger / B-Series :: 2002 XLT - Rough Idle - Misfire On Cylinder 3

I have a 2002 ford ranger xlt 3.0 i just rebuilt the entire motor about a month ago and was having a high idle problem for the longest time. turns out i had the iac on backwards. but now that it idles down around where its supposed to it has a rough idle has a little shake to it. starts up right away but when i drive down the road around 3000-3500 rpms its missing on cylinder #3 from what the code I am getting "multiple cylinder misfire, #3 cylinder misfire" I've replaced plugs and wires. camshaft pos sensor. I am getting 65 lbs of fuel pressure. spark on all cylinders. I am really at a dead end here. Also every time I take the plugs out to look at them they look brand new.

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Ford Ranger / B-Series :: 2002 - Cylinder 2 Misfire Code / Idle Rough When Warms Up

I bought this from my brother in better than mint condition. Always maintained. Its generating a cyl #2 misfire code.

It starts and runs like new when cold, but when it warms up, it idles rough, and generates the code. after 1500 rpm it smooths right out and runs fine.

He had it to the dealer just before I bought it and they told him needed a new engine.

I am thinking bad injector, since what seems to be happening is, when cold it gets more fuel, or when u rev it gets more fuel, but at an idle and warm, it doesn't seem to be getting enough maybe. And I see from the maintenance records, a couple of other injectors have been replaced as well.

I think the dealer got tired of replacing injectors under warranty and tried to milk him for a new engine.

2002 ranger extended cab 2wd, 3 door, 232,000 kms 5 speed 3 liter V6, new glass and clutch..

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Hyundai - Tiburon :: Misfire / Power Loss / Hesitation / Poor Fuel Economy

I have a 97' hyundai tiburon, I have multiple misfires that are p301 302 304 and rich airflow. I have changed the coil pack, spark plugs and wires, and the MAF sensor. Basically my car doesn't accelerate fast or go over 40(max), it putters when i try to accelerate.

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Ford F-150 - 1997-2003 :: 2002 - Rough Idle - Hesitate While Accelerating - Replacing Coils And Plugs?

I have a 2002 f150 with the 5.4. Its got a rough idle and a bit hesitant on acceleration. Im wanting to replace the coils and plugs but what brand of coils should I use?

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Ford Super Duty (1999-2016) :: 2002 F250 V10 Rough Idle / Misfire Under Load

I have a 2002 F250 CCSB Lariat 4x4 with the Triton V10, I'm up to 232,000 miles so far and fairly happy with the old girl. Just this weekend, I noticed some hesitation when at idle and even more rough running when under slight load. The misfire/hesitation is worst when going up a slight hill, when the truck is accelerating at low RPMs.

I am getting zero trouble codes or freeze frame conditions on my scanner. What should be my order of diagnosis? Vacuum test at line from PCV to TB, COP test? EGR inspection? Plug inspection? Also, how do you test a coil if resistance is not a reliable method?

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Accent MC (2006-11) :: Hesitation Or Misfire When Accelerating From A Stop

I have a 2010 accent 2.0 with 110k. When accelerating from a stop it seems to hesitate or miss in the first 20 ft or so. The service engine light has not come on which indicates to me it's not in the emission sensors. Where to start looking?

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Elantra XD (2001-06) :: 2002 - Rough Idle / Now Car Won't Start

I had a rough idle and now car wont start. 2002 elantra, 4 cylinder. replaced tps, replaced fuel filer, cleaned IAC. I can hear fuel pump car wont stay running...

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Elantra XD (2001-06) :: 2002 - Erratic Idle And Ran Rough At 1200 Rpm

I just picked up an 02 Hyundai elantra manual trans that needed a transmission. ran fine before I replaced transmission but after putting it all back together the car now how has an erratic idle. it will rev from 2-4000 rpms. I tried spraying for vacuum leaks idle didn't pick up any higher. replaced tps and iac and didn't make a difference. the only thing that did make any difference is unplugging map sensor. dropped idle to about 1200 rpm but ran rough. could this affect the idle.

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Hyundai - Elantra :: 2001 - Gas Cut When Accelerating Sometimes, Very Often Lately

My problem is gas cut on my Elantra 2001. Here is how it happened; Last week I filled up my tank with regular gasoline then added middle quality gas this time. I always use middle quality gas but once I made a mistake and filled with regular. Then my reliable elantra started stumble and cut gas few times in a day. What would be the problem?

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Elantra MD (2010-15) :: 2014 - Bog / Hesitation When Accelerating

With Eco off my sport has a nice bog/hesitation when accelerating. Doesn't matter if ac is on or not. I'm also using shell from the same station I've always used for years. The 2.0 is still pretty new. My cruze turbo had the same kind of issue and turned out to be the spark plug gap was too small from the factory.

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