My 2002 Ford Ranger (6 cylinder) got three misfires within minutes after leaving the house this morning (#4,5,and 6). There's been 3 solid days of very dense fog and drizzle here, so I know it's the moisture because it was fine until then. My question is, do I replace the plugs AND wires for these three, or can they be saved? I had a tune up 2 years ago, but don't know the brand of plugs that were used...
View 6 RepliesI have an intermittent start-up problem with my 2001 BMW Z-3, 3.0: cylinder 1 misfires on start-up for a few seconds or up to a few minutes under certain conditions. The misfire conditions are consistent:A)OBDII code P0313 (misfire detected with low fuel) or code PO1343 (cylinder 1 misfire with fuel cutoff). Both OBDII codes equate to BMW fault code 238.B)after winter storage it misfires on start–up for 5-10 minutes (I’ve always added a fuel stabilizer before winter storage);C)after a spike in humidity it misfires on start-up for a few seconds or up to a minute after a rain storm or;D)If I don’t run the car for a 3-5 days (always stored in a garage) it misfires for a few seconds (just long enough to turn on the “check engine” light).
Otherwise, the car runs flawlessly –plenty of power – smooth as silk - no hesitation, but with the bloody check engine light on 50% of the time.In lieu of black tape over the check engine indicator, I’ve taken the car alternately to both Minneapolis BMW dealers over the years (once if not twice a year), but the intermittent nature of the misfire and the fact that I store the car 5 months the a year has made it difficult to pin down the exact “root cause” of the problem. The dealership mechanics have swapped and/or replaced the cylinder 1 fuel injector, spark plug, cylinder coil and cable, kept it overnight and for days. The last dealership diagnosis was a defective cylinder 1 exhaust valve that could only be fixed with valve job! Yes, that’s right, pull the head and do a complete valve job - on all six cylinders. What am I missing here? What about the infamous BMW VANOS valve control system?
Besides being spark plugs and wires and/or a bad coil pack, what other things could make it so i have misfires on cylinders 4 and 6? going to replace the plugs and wires later today when they get to my house but i just want to know what other things i could be so I can evaluate the potential repair cost and should the wires for cylinders 4,5, and 6 be under or over the intake manifold? I bought my truck used and they are currently under the manifold i think it would make more sense to have them over personally.
I have a 1997 Ranger 4WD with the 6 cylinder 4.0L engine. I can't remember the codes that it tripped at the moment but i think one might have been the 304 code not sure though.
I tripped the 300,304, and 306 code but don't know about any others i remembered what codes i tripped the other day when i had it scanned
Posting this on behalf a friend. He has a '97 Ranger 2.3, 5 speed, 2WD, no A/C or power steering. No trouble codes.
The Problems:
It has an erratic random misfire at idle. Just runs very rough at idle. The misfiring goes away once the engine speed is up.
It has absolutely no power while driving, it's foot the floor all the time. On a straight piece of road it will top out at around 65-70 MPH. Above ~2700 RPM or so and it will start getting severe detonation, by 4000 it's really bad.
Along with the no power issue, it also does not like to rev. 4300-4500 RPM is about the end of the world for this thing, and it really does not want to spin any faster in any gear. It just stops pulling.
What we've done and checked: Complete tune up, 8 new spark plugs, 8 new wires, new fuel filter and cleaned the MAF. Fuel pressure seemed a couple PSI low, so the regulator was changed out as well. No change in operation.
We have access to a scan tool with live data, so I checked some things out:
The O2 sensor reports a rich condition while wide open throughout the entire RPM range, so it's not a fuel delivery problem.
Fuel trims are normal, +/- 5-7% or so.
Calculated load was at 100%, pretty much from idle to 4500 RPM while wide open. This is very odd, as it usually takes a very high-strung N/A engine to hit 100% load at any RPM, let alone the entire RPM range.
Other things we've done:
We checked the reported ignition timing advance on the scan tool to the actual timing with a timing light, and it matched up perfectly, so no issues there.
However, I noticed that the timing light was flashing erratically at idle, and behaved slightly differently when clipped to the rear coil pack vs the front. Once the revs were up, the timing light flashed in a consistent manner.
2002 V10 72k, starts fine, runs fine, occasionally misfires and will stall at idle. So far.
Replace boots
Replaced Air Filter
Tested resistance in all coil packs all within value
CODE P0720 - OSS (replaced, knew it wasn't it but...)
Seafoamed truck (very anticlimatic)
Cleaned MAS
Headed to clean IAC next.
Still has the original plugs, any reason to change them yet?
Does the IAC have a function when engine is at temperature? Getting ready to bite the bullet on AE. Any first hand experience with AE? I STFF and couldn't find anything.
I'm about 90% convinced it's a bad COP, but I'm not about to buy 10 of them on I think. Also not inclined to switch each COP with a known good one. I'm hoping the AE will show misfires and pending codes.
I have a 2002 Elantra that has been in shop 3xs for same thing. The car says it is missfiring on 1 and I have changed wires, coil pack and spark plugs with no success.
View 2 RepliesI know the ignition coil are a big thing but I'm going to be buying this car this week and so I need to see how much less to offer the guy because of this issue. Is there anything other then the ignition coil that it could be? What's worst case scenario? And also would it be ok to drive it home about 60 or so miles with this going on? I'm guessing it's doing the misfires at idle.
View 6 RepliesAbout a year ago several things started with my 1991 Ranger (180,000 miles, and has always run just like it did when I drove it off the lot). Maybe they are related, maybe not.
1) significantly reduced mileage,
2) surging at idle from 1000 rpm up to 1300 rpm and then right back down - very rhythmic,
3) Check Engine light comes on every now and then, but goes off in less than 30 minutes, or if engine is stopped and restarted,
4) way less heat available through the heating system,
5) somewhat reduced power.
I have changed the thermostat and replaced the plugs and ignition wires, but nothing has changed in the way the truck runs.
I have an 87 v6 ranger with 5 speed that has been sitting for several years. The truck only has 48000 miles on it. The gas tank has been cleaned out and both fuel pumps have been replaced. The injectors were pulled and cleaned...
It will start up and run for about 5 minutes and then will shut off. It will not start after that until the next day and then does the same thing. It starts up and runs then shuts off and can't get it to start again. Could it be some kind of circuit breaker tripping or maybe the ecm. If it is the ecm how do you test it...
I have an 02 Civic EX. Engine light has been on for over a year, runs just fine. Reading misfires on 3 cyl, and cat code. I have since: changed all plugs and coils, changed both front and rear o2 sensors....switched coils around to see if code misfires changed (yes).
I see this is a common problem but no one has a solution..? I'd rather NOT change the cat converter and pay for that only to find out the light stays on. Need to smog so I can sell!
Getting multiple CEL's for the catalytic converters and cylinder misfires. Looking for threads that address these particular codes ie. 0431, 0421, 0300. 0303, 0306. I have a feeling that these are being caused from a vacuum leak and/or needing a reflash for the ECU.
View 3 RepliesI'll drive my 2000 Ford Ranger, 4cyl XLT about 5 miles to the store without a problem. On the way home, after a few miles, the clutch pedal will either jam at the top, or go all the way to the floor without engaging the clutch. If I wait 5 or 10 minutes, the clutch pedal will start working again for a short time.
If I feel the clutch pedal starting to misbehave, if I ride the clutch and don't release the clutch pedal all the way, and if I don't push the clutch pedal all the way down, I can keep driving the truck. As soon as I release the clutch pedal, it will jam up again, or the clutch pedal will go all the way to the floor without engaging the clutch. I don't like riding the clutch, but that seems to be the only way to get home once the clutch pedal starts jamming.
It certainly seems related to the engine warming, or heating up. Sometimes, after the clutch jams up, I'll wait 5-10 minutes and the clutch pedal will start working as if nothing every happened. So, it can't be strictly a hot engine, hot clutch fluid issue, right?
What would you attempt to replace first, the Slave Cylinder? The Master? Changing the fluid? Shooting the truck!?
So I have had an issue with my Ranger. When the car is cold it's fine. After a while...maybe 20-30 minutes of driving, the clutch will start to stick. No better way to describe it. I will take my foot off and it will stick on its way back. It starts subtle but the this will gradually get worse and eventually the clutch will seize up and I can't press it anymore and the car stalls and I'm stuck. The car cools off and everything will be fine no problem.....but the problem keeps resurfacing.
View 6 RepliesMy '03 Ranger started making a knocking noise last summer after 15 minutes of driving but only when the temp. outside is over 80 degrees or so. It stopped during the cold months but has resumed this summer. It is a low knocking sound and a) the vehicle must be moving, b) it has to have been moving for 15 minutes or so and c) it must be over 80 degrees outside. I can feel it under my feet and thru the steering wheel but mechanics say that they don't hear it and can't find it because they are getting into the vehicle after it has had a couple of minutes to cool down. Mechanics tell me that they have checked the universal joint and that it is fine. I need a brave mechanic to drive along side of me in another vehicle, going 45 miles per hour for 15 minutes and then they need to jump over into the driver's side and take over the wheel (like in the movies) so that maybe we can find what is making the noise. It makes this noise whether the vehicle is in 4wd or 2wd or the A/C is on or not.
View 8 RepliesMy ranger 2.9 automatic 2WD has an high idle when started for about 6 min, engine can be hot or cold, still get the high idle, then it will drop to around 900-1000. I've changed the Idle control twice, checked EGR function. Replace temp sensor. Disconnected battery for 15 min. No code output.
View 7 RepliesAfter a long trip from Houston to Dallas, my vehicle started to ride rough and eventually die on idle. It seems to idle fine, but then die after the first minute. I am getting code P306 and others all dealing with random misfires and misfires on ALL cylinders. The troubleshooting steps I have taken so far to no avail are:
(1) Replaced spark plugs with pre-gapped iridium
(2) Checked ignition coils
(2) Checked all vacuum hoses and air intake leaks
(3) Changed air filter(not a big deal)
(4) Removed and cleaned the throttle body with carb cleaner thoroughly
(5) Checked the intake manifold for leaks and did not find any.
(6) Computer PCM checked for updates and issues at dealer
The dealer said it needed new fuel injectors, which seemed kind of fishy due to the following symptom:
The car runs GREAT at highway speeds, but it is unable to maintain an idle for an extended period of time and dies due to misfires. I hear a chugging in the engine sometimes.
Due to these symptoms, I self diagnosed this as a fuel regulator?
1987 ranger 2.9l 4wd 5 SPD ... I just replaced plugs wires distributer cap and rotor and pcv valve and hose. It drives fine for about 3 minutes and then it looses all power and I can't get out of 2nd gear. It idles fine all day long. The guy I bought it from said he put a new tank and pump on it.
View 3 RepliesI have a 2002 Nissan Quest. It starts fine, idles great. But, when I try to accelerate, the car bogs, hesitates, misfires and I get p0300 random misfire, p0325 knock sensor. I get no dtc when it is just idling. The fuel pressure is fine, regulator works good, the cam sensor is clean, the coil tests good, the compression is good, as are the wires, cap and rotor.
View 2 Replies2002 Santa Fe has been misfiring for about a month...yesterday it got worse...When it's running hot and stopped at intersection it lurches forward.. It stalled when backing up after being parked. Mechanic did diagnostic test and it showed zero...He changed 2 wires to spark plugs..Spark plugs have only 20,000 miles and SUV has 68,000 miles.
View 6 RepliesI have a 2002 Mazda Protege' which recently started losing power periodically. At the same time, the check engine light would blink and then stay solid. The dealer diagnosed a random engine misfire and replaced the spark plugs, wires, and coil packs. It cost $500.00. After 3000 miles, the problem has returned worse than before. This weekend it lost and regained power repeatedly in short spans of time, and lurched back and forth as it happened. The check engine light returned as well.
My first question: what do you think this is? My neighbor suspects a clogged fuel filter or fuel regulator.My second question: what, if anything, does the dealer owe me financially?
I have a 2002 Nissan Frontier that a had a buddy perform a tune up. Now my buddy has disappeared and my truck miss fires on start up and occasionally looses power when you drive it. I also noticed that It consumes more gas. I went from 305 miles on a 17 gallon tank to 230 miles.
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