Passat (B6) :: Cold Temps Causing Misfire - CEL Flashed?
Tonite on the drive home it was about 10 F and once my car was up to temp, I put my foot into it, I felt the car hesitate a bit, the CEL flashed a few times and went off. Could the cold temp cause that or is it more likely a bad coil?
View 6 RepliesCamry :: 2002 - Car Heat Up At Idle / Temps Will Drop
My wife has a 02 Solara V6. It has been a cold spring and now it has warmed up and in the 80's and a problem has reared its head. Engine runs fine, will warm up normally and while driving will stay at a normal halfway temp.
Problem is it will heat up at idle, say at a light. The fans run, but half assed. They'll kick in with the AC on and the temps will drop, but then they switch off to half assed speed again. I will probably take a multimeter and measure the voltage at each fan plug when they are running slow.
The weird part is both fans go full bore when the AC is on and then slow after about 4-5 mins.
Lumina :: 1990 3.1 L Engine Misfire When Cold - Running Rough
I have a 1990 3.1L, multiport fuel injection (NOT sequential FI), which runs very well most of the time. However, when I cold start it runs rough (misfire) for about 1 minute (no throttle) or until acclerated. The is no misfire when running normal, but it might be running a little rough when stopped at a traffic light (in Drive, foot on brake).
I put new plugs and wires on, but it did not affect this problem.
I am not using coolant, or oil, the plugs that were removed were somewhat worn, enough that I expected to notice a difference after they were changed.
I have not yet (1) cleaned the MAF, (2) checked carefully for vacuum leaks, (3) checked for leaking injectors.
Since this is a 1990, OBDI, I can't say which cylinder is misfiring or how the fuel trims look etc.
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.
Buick - Regal :: Rough Idle / Misfire On Cold Start - Leaking Fuel Injector(s)
1991 Buick Regal, 3800 V6
Having a rough idle on a cold start. After some research and closer inspection of the vehicle, I'm quite certain I have at least one leaking injector that is flooding a cylinder and causing the car to misfire on a cold start. I'm also not at the gas mileage I should be at.
So I'm wondering, is fuel injector replacement as straightforward of a job as it looks? Any major issues I could run into in doing a replacement?
I'm planning on replacing all six injectors (I can get them for $50 each buying online with a discount code), but given that the vehicle is so old am I better off just replacing the faulty ones? I'm assuming pulling the spark plugs and seeing which cylinder is wet will tell me which I need to replace.
And one more question: Is there a way to depressurize the fuel system when I park the car for the night, thus preventing fuel (or most of it) from leaking into the engine until I get this fixed? I've read that just unscrewing the gas cap can depressurize the system.
Subaru - Legacy :: Slight Rough Running With Cold Engine And Stumble Below 2000 Rpm / CEL Misfire Code
I have had some slight rough running with a cold engine and stumble <2000rpm. Finally it tripped a CEL which was read as a misfire code.
The mechanic swapped the coil and plug(recent) and no change. He did a compression test and air blew out the exhaust. So.......the car needs a valve job which entails motor removal and fixing the head and reinstall. He rough estimates this at $2000 and rate is $65/hr.
He mentioned looking at pistons and may be a bit more if rough.
This car well maintained (170,000 miles 2005 Legacy turbo wagon with manual)...
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.
View 14 RepliesCamry :: 2.4 Engine - Misfire Codes And Rough Idle
The engine on my camry 2007 was overheated and I had the headgasket replaced but now it has misfire codes and rough idle this is a 2.4 engine I replaced 2 of the coils but still it has a rough idle... when the car is running it runs pretty good.
View 5 RepliesHyundai - Elantra :: 2002 - Rough Idle And Misfire When Hot / Intermittent Hesitation When Accelerating
2002 Hyundai Elantra GT 2.0L 140k miles
Symptoms:
- Intermittent rough idle when hot, slight shutter, surges between 700-800rmp
- Intermittent hesitation when accelerating, cylinder 2 misfire when hot and under load
- Misfires in all gears under load, mostly when under 2000rpm
- Code P0302 when scanned, no other codes
- Symptoms appeared suddenly, not gradually over time
What's been changed:
- Replaced spark plugs, little or no improvement. Old plugs looked worn, but generally in good shape with no significant deposits.
- Cleared code and swapped injectors between cylinders 1 and 2, after test drive P0302 code came back, so it seems that the injectors are good. If the injector were bad I would have expected the misfire to change from cylinder 2 to cylinder 1.
Inspection and Testing:
- Ignition System Testing
- Spark plug wires and primary coil are within specification.
- Secondary coil resistance is high on both packs. Could this be causing a problem with just cylinder 2? Is it worth replacing?
Spark Plug Wires: Specification: 5.6 Kohm/meter +- 20%Cylinder 1: 2.49 Kohm (Longest)Cylinder 2: 2.03 KohmCylinder 3: 1.64 KohmCylinder 4:1.36 Kohm (Shortest)
Primary Coil: Specification : 0.58ohms +- 10%Actual: .6 and .6
Secondary Coil: Specification: 12.2 Kohms +- 15%
Actual (Cold): 16.03K for Cylinder 2-3 pack and 15.94K for Cylinder 1-4 pack
Actual (Hot): 18.54K for Cylinder 2-3 pack and 18.44K for Cylinder 1-4 pack
Air/Fuel System Testing:Fuel system seems to check out. I do not believe the problem is fuel related. There are no obvious cracks or leaks on the intake manifold. A good spray of Carb cleaner all around the manifold causes no change in idle. I might try propane later. No obvious vacuum leaks.
Fuel Injector: Specification: 13.1-14.5 ohms
Actual: Cyl 1: 14.9, Cyl 2: 15.3, Cyl 3: 15.3, Cyl 4: 15.7
Compression Testing:Compression is not great, but within specification. Could the slightly lower compression in Cylinders 2 and 3 indicate a head gasket leak between those cylinders? Could this cause a misfire in Cylinder 2?
Dry Compression: Specification: 145-218psi, <15psi between cylinders
Actual: Cyl 1: 165, Cyl 2: 155, Cyl 3: 155, Cyl 4: 160
Oil/Coolant/Tailpipe:
- Oil looks normal, not brown or milky
- Coolant looks normal and is full, no signs of leaking (coolant has not been changed in a very long time, could a coolant flush work?)
- Exhaust looks and smells normal from tailpipe.
Sticking valve? How would I check this? Bad sensor somewhere? Doesn't a bad sensor usually throw a code?
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..
Camry :: 2007 V6 With Flashing Dash Lights / Rough Idles And Misfire
Having an issue with my wife's 2007 camry V6. We got the car new and the orig battery lasted over 3 years until a trip NY where the intr light was left on for a couple of days. After several tries, the battery took a jump from a tow truck and got us home. The car ran for a few days then we had starting issues as well as the dash lights would flicker and the speedo neelde would jump along with the RPM gauge. So we changed out the battery.
Now we only get about a year per battery. We also noticed the drained batteries are typically accompanied with misfiring and a bad coilpack. Not sure how that fits into the equation but we have changed 3 of the 6 coil packs. The most recent batt swap only lasted 7 months. The flickering lights and jumping RPM n Speedo needles happen last firday when my wife called me to say "its at it again" driving rough, ABS light, Ck eng light on and flashing.
She got home late and parked it in the garage. The next morning i went out to inspect and it wouldn't start. Fast clicking sound of a dead batt. I changed the battery (Costco batt fitment 24f i believe) yesterday (Monday). She called this morning and the car is still riding rough and the ck eng light is on. My guess is another coilpack.
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?
Camry :: 2002 Toyota Misfire / Won't Accelerate Beyond 3000 Rpm
Once day my car began idling poorly and would not accelerate beyond 3000 rpm. The check engine light began blinking and I stopped driving it.
My check engine light remained on and the obd read Cylinder 2 misfire (p0302) and random cylinder misfire (p0300). I tested the ignition coils and found that the cylinder 2 ignition coil was dead so I replaced it. The codes no longer showed but the car still would not accelerate and was firing irregularly. I checked for vacuum leaks but found all hoses connected and whole.
I tried removing pcv hose and blocked the valve with my thumb and the car instantly corrected the rough idle. I then went around the block and the car drove and fired properly. I'm unsure if I am losing vacuum pressure in the intake manifold or if the issue is elsewhere?
Camry :: 2002 - P0302 Cylinder 2 Misfire Warning
I have a 2002 Camry, 2.4 with 155k miles.
This morning I was going to work and was making a lane change and hit the accelerator quite aggressively. Suddenly my engine started to run really rough and shook the car and the check engine light started flashing.
I checked the engine code and its giving me a P0302 Cylinder 2 Misfire warning.
I have read that there can be various reasons but I figured since this problem is consistent its not a vacuum issue? Could it just be a bad plug? I don't have the tools to fix it, I am going to get them soon to pull the plugs and inspect then, and will replace them anyway since I don't think they have ever been replaced.
Camry :: 2002 - Intermittent Misfire Code P0300 / 301 And 302
I've got the intermittent misfire codes on my '02 Camry, and after changing the spark plugs and the ignition coils the problem still persists.
At first there was no noticeable misfire, I took it to two different mechanics and neither said they could find anything wrong. A few weeks later the misfire became noticeable when I'm sitting at a stop light. I can feel an occasional rumble in the engine.
Camry :: 2002 - P0304 Code / Misfire Occurring
We just bought a 2002 Camry with 72,000 miles 2 months ago. It now has 74,000 and while on vacation the CEL came on. I took it to a mechanic who got the code P-0304 off the computer. He swapped the number 4 ign. coil pack with the number 3 cylinder. The CEL light went off and I was able to drive the 300 miles home. The next day the CEL started again, but this time it's flashing. I changed the spark plug, it looked good, and still have the CEL on with the P-0304 code.
I've inspected the wiring to the number 4 ign. coil pack and it looks good. I'm thinking the next thing would be the fuel injector.
The car runs great, you'd never know by driving it that there is a misfire occurring. If it's not the wiring or fuel injector what should I check for next?
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.
Golf VI R :: Front Brake Squeal When Cold Temps
I'm experiencing since outside temps are down here in Canada heavy brake squeal in the front. It is barely audible at -2/-3 Celsius, but lower (-10 and lower), it's really aggressive.
One week ago when very cold outside, I went to the dealer, I insisted for a test drive because of the cold condition this day. The tech notice the problem, and we scheduled an appointment for the next week to look at brake pads.
it's -1 outside, so brakes do not squeals... The service advisor told me, the tech (the one that tested it last week) is absent today. so if we look at this and found nothing, you will pay for the work...
So I need to wait a colder temperature to come back to the dealer...
The question is : what do you think about this problem ? are brake pads defective ? It's happen a low speed, regular braking (stop or light).
Santa FE SM (2001-06) :: Crank With No Start In Cold Temps
I am having a crank and no start issue for a while now In Cold Temps -20 Celsius Or Colder... dealership checked fuses and relays they came back fine. there was an active CEL code for Low System Voltage would that have something to do with my problem here, and what else could be the problem? this has happened in the past after short 2 min drive and go in the store and come back out from being in the store for a few mins, eventually it does turn over but not without alot of cranking and curse words, until now I just found out after a longer 20 min trip it did it again, telling me its getting worse. 2006 Hyundai Santa Fe / 205,000 kms....
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