Ford Ranger / B-Series :: 2006 3.0L - Intermittent Low Compression And Misfire At Idle

I bought a used Ranger a couple months ago and it ran fine when I test drove it but a week later it started having a misfire every now and then at idle.. I must have gotten pretty unlucky with the test drives..

The misfire comes and goes, it will run fine for a week or two and then it will misfire at idle for a week or two. It only seems to misfire at idle, the truck runs rough/shakes but once you give it a little gas and start moving it goes away. Usually it has a check engine light on from startup when it's misfiring and it goes away on days that it's running fine; it will occasionally misfire at idle with no check engine light. Sometimes when its running really rough the CEL flashes while it's misfiring at idle and I've actually restarted it real quick and the misfire went away for a bit. The engine codes that come up are misfire on startup and misfire on cylinder 4.

I've tried cleaning the MAF sensor, replacing the fuel filter, testing for spark and compression. Compression was 150-155 PSI on all cylinders, however, the compression on cylinder 4 is different depending on whether the truck is running well or not. When it's misfiring the compression on cyl. 4 is 90 PSI and when it's running fine it's 150 PSI. I'm not sure what could be causing intermittent low compression like that?

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Ford Ranger / B-Series :: Misfire Codes Started Out On Cylinder 5

I am currently chasing misfire codes that started out on cylinder 5 p0305 was the first code I replaced spark plugs and wires about 200 miles the code returned checked coil with meter it was barley in spec. I have replaced coil same code only difference was a hard start cold or hot replaced injectors now hard start is fixed but logging codes for right bank is to rich and p0300 304 305 and 306 also performed compression test on right bank and readings are 155 155 and 160...

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Ford Ranger / B-Series :: 1998 - Codes For Lean Bank 1 And 2 - Cylinder 4 Misfire

1998 ranger 4.0L. I ran my scanner on my truck to day and my 2 bank 1 sensors seem to be bouncing between .150 and .700 but my bank 1 sensor 2 seems to be stuck at 680-720 and not bouncing, is this normal?

I did pull a code po135 heater circuit malfunction BANK 1 SENSOR 1 ...

Also I am not sure where my fuel trims should be...

My
ST1 10.0
LT1 25.0
ST2 12.0
LT2 25.0
closed loop.

When I first got the truck I pulled codes for lean bank 1 and 2 also a cylinder #4 misfire and the bank 1 sensor 1 heater circuit. I reset the codes and the heater circuit bank 1 sensor 1 popped the mil light in 5 min. So I am starting with the o2 sensors. I've not found any vacuum leaks at this point.

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Ford Ranger / B-Series :: Steam Out Tail Pipe / Misfire Codes And Rough Idle

Steam out the tail pipe, misfire codes, rough idle. No water in oil, no over heating. Head gasket ??

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Passat (B5) :: 1999 - Check Engine Light On With DTC Codes / Misfire After Startup

The check engine light on my 1999 1.8T Passat is on. It started with a little miss right after startup. Then in neutral, after revving the engine to say 1,500 rpm and letting off the gas, it would nearly stall. I plugged in an OBDII analyzer and came up with codes P0102 MAF or VAF circuit low input and P0304, Cylinder #2 misfire. I replaced the spark plugs, as they were old anyway. Still the same symptoms. Then I replaced the mass air flow sensor.

The check engine light still went on after it was cleared, except this time it was P0302, Cylinder #2 misfire, P0102, P1613, Auxiliary inputs aux. outputs control, and P1426 Mfg. Control/auxiliary emission controls. Soon after, the car started running fine on it's own and I again cleared the codes.

Then a day later, the check engine light is on. This time, it is only the P1426 - Manufacturer control auxiliary emission controls. The Bentley manual calls it Tank Vent. Valve Open, which doesn't mean anything to me and the Bentley manual is of no luck. (The error code almost implies that it is the famous loose gas cap, but I have checked that - unless the gasket is bad). FYI: I have 99K miles on the car.

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Ford Ranger / B-Series :: 1999 - Misfire After It Warms Up

I just bought a 99 Ranger 3.0 L. Truck runs great while cold. After it warms up however it has a misfire. I knew that when I bought it, and bought it cheap enough that I figured even if its down on compression or something serious, I could afford to throw a long block in it. It also is throwing a check engine light. I have not read the codes yet, waiting on a scanner I purchased. Ive got new plugs and wires for it, not yet installed. Also, have not checked compression yet. Been too busy to work on it much so far. Just curious if there is anything I can look at before the new scanner arrives.

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Ford Ranger / B-Series :: 1999 - Code P0305 Cylinder 5 Misfire

I have a 1999 ford ranger 3.0 6 cyl with 211,110 miles It started running rough without any previous warning signs. In idle its barely noticeable, once i put it in gear it gets rougher and when driving around 40 to 45 mph it roughly shakes and shimmies. Once I get past the 40 to 45 mph range it settles back down. Is there a specific issue that would cause that at that speed. When going up over a bridge the check engine light blinks.

I changed the spark plugs and new wires and it offered no success even though one of the plugs were black (to much gas). I have borrowed a diagnostic tool and got P0305 cylinder 5 misfire, I am thinking fuel injector to replace, what else should I be looking at?

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Ford Ranger / B-Series :: 1999 - 304 Code / Misfire In Cylinder Number 4

1999 ranger 155k 3.0 flex fuel. 304 is misfire in cyl number 4... I replaced the plugs and wires and checked the coil. the compression in cyl 2, 4, 5, 6 and got 80-90 psi so they are consistent but consistently bad right, it may be my compression tester.

The #4 plug was spotless after running 5 min, the #5 plug had some black on it already. Its hard to tell but it seems I had fuel residue on the plugs on cyl 5 and 6 but none on 4? Whats next pulling the intake to get to the injector?

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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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Ford Ranger / B-Series :: 1999 B4000 - Random Stalls / P0171 And P0174 Error Codes Come Up

I have a 1999 B4000 V6 4.0L with 78K miles on it. I recently had P0171 and P0174 error codes come up. I replaced the MAF sensor and have not had the codes return but now the truck will basically stalls out when sitting at a stop light. It does not do it all the time just randomly. It has never done it when engine is cool but only once up to temp. The idle is smooth at cold engine but begins to get rougher once warmed up (nothing too bad just noticeable). I cleaned the IAC with MAF cleaner but no joy. I reseated all plug cables at the coil but no change. RPM around 600-700 then fluctuates up a bit then truck will stall quickly( I usually cannot put other foot on gas in time to get it to increase RPM before it dies)....

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Ford F-150 (2004-2008) :: 2006 - Intermittent Misfire But Not Throwing Any Codes

I have a 2006 Lincoln Mark LT that seems to have an intermittent misfire. The truck is not throwing any codes either.

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F Series :: Cylinder 1 Misfire Only At Startup

Normally a misfire i put a new coil on that cylinder fixed.. new coil and plug still a miss.. only at startup .. smoothens out in 25 seconds..

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Ford Ranger / B-Series :: Idle Surge On Startup

On startup, hot or cold, I get an initial high idle, up to around 1800 rpm's. This happens immediately when engine starts, and then idles right down. This has done this since new in '04. Dealer at that time said it was normal and not to worry. It's always made me wonder, but I trusted the dealer. Ya, not always smart.

After 92k miles. Engine runs fine otherwise, but I don't really care for grabbing a bunch of rpm's on any engine without having the oil pressure up to normal.

A few weeks ago, I started it up, and some yahoo said he knew I drove big trucks by the way I started my Ranger. That was one of those times. I'm thinking IAC is wide open maybe?

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Ford Ranger / B-Series :: 1998 - Shakes On Startup?

I have a 98 Ranger SuperCab XLT 4WD 4.0 Auto. Occasionally, especially when it has been sitting for more than 3 days, it shakes for maybe 30 seconds on startup. It smooths out gradually after that, maybe 15 sec. to normal smoothness. It seems like it is firing on all cylinders and is more like something out of balance.

Never does it when sits less than 2 days. When it happens, the longer it sits the worse it shakes.

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Ford Ranger / B-Series :: 1998 - Horrendous Shake Upon Startup

I have a 98 Explorer upon startup is horrendously shakes. What went to hell in the transmission?

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Ford Ranger / B-Series :: Oil Pressure Goes Up To About The Middle Of Gauge After Startup

I have a 97 Splash with the 3.0, oil pressure goes up to about the middle of the gauge after startup, however, it stays there whatever I do, warm/cold, idle/5500 rpm. Is it supposed to be like that?

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Ford Ranger / B-Series :: Intermittent Vibration Between 90 To 105 Km/h

I just totally re-built the rear brakes in my 93 Ranger 2wd. Now its seems I have this 'intermittent vibration' between 90 to 105 km/h.

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Ford Ranger / B-Series :: 1998 - Missing On One Cylinder During Cold Startup

1998 4.0 ... She only misses about 30 seconds during stone cold startup. I figure it's probably the plug thats hardest to reach ? Isn't that the way it always is? From the hood I can see only one spark plug, so I figure I'll do all the plugs. Is there any right or wrong approach to the plugs? I did the thermostat today, but this plug job looks like it's gonna be a bitch. Time for some skinned knuckles Next is the right side O2 sensor, that looks like fun too. But I gotta say, this little truck is sweet. Great visibility and easy to park in the city. I really like her. She's a keeper. She needs some new sway bar bushings too, but no surprise with 127 K on the clock.

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Ford Ranger / B-Series :: 1985 - Chattering At Startup Which Quickly Went Away After Warmed Up

My ranger has always run pretty good except for a small bit of chattering at startup which quickly went away after it warmed up. Now all of a sudden its much louder and doesnt seem to go away while driving. I read about the oil pickup tube getting blocked and not properly delivering oil and so I performed the superhuman task of dropping the oil pan to check. While I couldnt get the oil pan all the way out, I got it to where I could feel the oil pick up screen and everything seems okay. I have the valve cover off. Are the lifters adjustable? Whats the issue?

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