2002 f150 4.6l v8... Truck is misfiring and the exhaust is smelling very rich, I have new coils and plugs, it also idles rough and stalls if i let it idle for more than a couple minutes. Could it be something with fuel delivery system?
View 1 RepliesMy gti with 5k miles will be in the dealership 3weeks on Monday! No one has been able to diagnose the problem! I called VW corporate and they told me that the dealer was working with their tech support and engineers.
The problem is has really rough idle were it stalls out. Bank 1 and Bank 4 are misfiring. This is the part were they are stuck. Once they remove the oil cap the car runs perfect! It stops all misfires and idles perfect. They've ran smoke test, compression test, vacuum test. Replaced pcv, high flow fuel pump, intake manifold.
I recently picked up a 2wd 2002 F-150 with a 4.2l V6 that has just over 300k miles. The CEL is on and I'm getting P1131, P1151, P0316, P0305 and an occasional P0301. It has a very distinct misfire from around 1,000 rpm and smooths out between 1,500 & 2,000 rpm, the idle rpm occasionally bounces (sometimes enough to stall), and the idle is sometimes rough.
I have replaced the plugs, wires, fuelfilter, and replaced a leaking PCV hose. As I have changed things the symptoms have improved some but they are still there. While capturing some livedata it kept going out of CL and into OL Fault. When it would the idle quality was crap and the miss was much more significant. I would have to put it into D hold the brake and run the RPM's up to just over 1k to get it back into CL.
After I got done with the data stream at idle, I set the parking brake held the foot brake and put the truck in D then ran the rpm's up to around 1,200 & held it there. The truck stayed in CL but it would cycle between misfiring for 5 - 10 seconds then clear up and run smooth for 20 ' 30 seconds, every time it cycled there was an audible click that could be heard. Also, the AC was off the whole time.
Live DataStream @ Idle: CL
CalculatedLoad Value - 12.9- 14.1%
EngineCoolant Temp - 103degrees C
Short TermFuel Trim B1 - 32.8%
Long TermFuel Trim B1 - 0.0%
Short TermFuel Trim B2 - 32.8%
Long TermFuel Trim B2 - 0.0%
Engine RPM - 816 . 846
[Code] .....
2003 7.3 excursion.. The truck starts every time revs up and idles about 3 seconds then the rpms drop and it tries to stall out catches itself then revs backup and idles rough similar to if you have got air in the fuel lines from changing the fuel filter.. About 1 in five times the truck will stall out and it starts and immediately and idles rough but the rpms and everything runs at speed and rpms don't drop again! This is a reman engine/transmission recently installed.. The mechanic who installed it was unable to figure the problem out.
View 6 RepliesIf I don't keep in the throttle immediately after start up it will stall a lot of the time. It doesn't do this every time or if it sits for a while but if I drive it and then stop off at a store or something and then go to start it back up it gives me this problem. I notice it idles about 3-4k RPM's when I stop at a light or something too.
View 14 RepliesI am working on a 97 4.6 with 146k for a friend. It idles rough and seems to lack power (then again a 4.6 lacks power )
Has New:
plugs
wires
coil packs
fuel filter
sea foam intake
sea foam fuel
I have checked:
proper egr function
vacuum leaks
cleaned IAC
steady 17-18 in vac
clean air filter
cats do not seem to be getting too hot.
no codes
KOEO test ok
KOER test ok
The plugs worked some. Dirty MAF, clogged cats??
So my "farm truck" is idling very rough, to the point that sometimes that it stalls out. At high idle it runs fine but when its at a idle its very rough. Its been running fine until probably a month ago or so and its just getting worse. What it could be? I am thinking it might be that something is dirty but i just dont know where to start with figuring out what the problem is.
View 9 RepliesWhen I turn-on AC or defroster, motor idles rough then stalls. My mechanic says it is not related to CHECK ENGINE light or exhaust O2 sensor? I have an 02 Ford Explorer.
View 4 RepliesI have a 2007 Ford F-150 5.4l v8...
Codes
P0012 int cam position timing over ret bank 1
P0022 int cam position timing over ret bank 2
P0300 random Missfire detected
P0316 engine misfire detected on start up
P0340 cam position sensor curcuit fault
P0345 cmp sensor a circuit problem bank 2
Starts rough, idles rough and stalls occur often when start, after it runs for 5 minutes and sometimes dint starts at all. I replaced spark plugs, coils, cam shaft sensors and had oil changes done and. No effect.
We've had two problems within the last week with our 2002 Sport Trac (4.0l SOHC engine w/167,xxx miles). They may be unrelated, but I suspect there's good change they are. Both incidents happened while my 16 yo daughter was driving, so there's only very limited info on what happens. Both times, when I get there, it starts and runs fine. There is no CEL.
The first time it apparently stalled as she neared her destination after driving only about 2-3 miles at 35 mph or less after a cold start. She was slowing to pull into a parking lot and reported the dash lit up with warning lights, no power steering assist and no power brakes and no power from the engine. When I arrived it started and ran normally. She had fulled up the day before after two days of heavy rain, so I suspected water in the gas. I drove it more than 200 miles within the next 24 hours under a variety of conditions and filled up at a different station. I experienced no problem what-so-ever, and didn't bother adding any dry gas.
Then 5 days later (still on my fill-up) when she tried starting it after sitting all day, she reported the engine started but ran rough before stalling and never idled normally.
Doesn't the fact there's no CEL eliminate a lot of the upstream part of the control system......like sensors and actuators? This leaves things like the downstream parts of the fuel and ignition systems. I.e. from the fuel tank / pump to the injectors and the downstream parts of the ignition system.
What are the possible culprits? Fuel pump, fuel pressure regulator, injectors, ignition module, spark plugs, and....... what else? (I'm not that familiar with what these engines have) And of the possibilities, what are the most likely causes.
Here's what I'm dealing with. Took the truck on a 1500 mile trip with no issues. Got home and started it the next morning and it started right up. 1/2 mile from home it starts to run rough and wants to die. It does this for a few minutes and then perks back up and runs fine for however long the trip is. It will always re fire and have no issues. Every morning it's the same game as described above. Within 1/2 from home it's doing this. Seems to be fuel delivery related, but why would it start after sitting overnight, and then after its little fit, run without an issue?
No codes in computer.
I have a huge problem. My 94 ranger 2.3L 5 speed manual transmission, has problems with idoling while it's cold, has no power going uphill and stalls when I slow down to stop. This is all after putting a new motor in. The old one was running ok with 310,000 but lagging bad. I figured with the driving I do, a new motor wouldn't be a bad thing. Boy, was I wrong. It has been a nightmare. But once the truck is up to operating temperature, it runs so smooth you wouldn't think there was a problem. But let it cool off, restart, and boom! There it is. We have changed so many parts and sensors with absolutely no change to the original problem. It's very frustrating. I just can't let this problem win. I will figure it out.
View 13 RepliesI have a 98 with the 4.2.The troubles started with popping a little through the exhaust ,bogging down and bucking,rough idle and had the two codes together that deal with having bad intake gaskets don't remember the codes offhand.
I also noticed every plug in the truck was wet and black however it didn't appear oil wet.I have changed the fuel filter,spark plugs,lower intake gaskets,plenum gasket ,injector o rings,checked injector ohms all were 16.5,new EGR gaskets,all bolts are torqued to specs
Now I have a no run condition, it will crank but not run. I heard a pop in the engine one time. I cranked till the battery went dead.I also noticed as I was calling it a day last night the radiator reservoir was empty. I don't know if somehow I got a hydro lock even though I put new intake gaskets in it or i have some other issue like timing or something. I don't know where to look next....
My 2003 F150, 5.4L has been having some rough idle/misfires issues both at idle and under load.
I have fixed one big vacuum leak, replaced the PCV valve, new sparkplugs, seafoam and heet in the gas, replaced fuel filter, tested the fuel injector resistance. Coolant levels have not changed. The truck burns about a quart of oil every 1000 miles or so. The white exhaust is heavier than condensation, but it comes and goes. The rough idling comes and goes as well, and it usually happens under load and the CEL flashes.
The codes I get are random cylinders, po303, po308, po171, po174 were the most recent but there have been other cylinders as well. I clear the codes after each attempt to fix it and they come back different.
I notice that there is a small exhaust leak that drips water just behind the engine, and when I shut down the truck a lot of water will pour out of an area just behind the cab on the passenger side as well as out of the bottom of the muffler (small hole, looks drilled).
Usually the rough idle occurs after filling up the tank, but from different stations so I do not think it would be watery gas. I use Heet every fill up as well. Also, there is a sulfur smell after the rough idling occurs (catalytic converter?).
I'm losing coolant have, excessive white smoke coming from the exhaust, and rough idle. Doesn't over heat or even try to overheat. The oil fill cap looks brownish white. It drives fine other than extremely rough idle. I know how to check a blown head gasket with the combustion gas test.
From what I've read blown head gaskets on 4.6 fords are fairly uncommon but a blown intake gasket is fairly common. How can I tell the difference?
So my truck is reading a code at P0172 which means bank one is too rich. I replaced all of my o2 sensors, cleaned my MAF, and replaced PCV and hoses connected to it. What else could it be?
View 3 RepliesAs the title says, I have an 02 Supercrew with the 5.4. The engine starts when cold and runs fine but sometimes when I start it hot after running for a bit, it will stall out unless I keep my foot on the gas pedal. This seems to only happen on hot days. It was about 90 F here yesterday and I drove it to a shopping mall after supper - maybe 5 miles. It sat for maybe 20 minutes and when I re-started it, it stalled out.
The tach needle just drops slowly to zero and the engine stops. It will re-start without any problem but will only keep running if I keep my foot on the gas and keep the revs up a bit. It has done this a few times in the past few years and only on hot days after it has been running and then sat for a few minutes.
What I should look at? It does not throw any codes and generally runs ok after a few minutes. For example, last night I managed to keep it going by shifting into neutral when required until I got back on the road. I drove 2 or 3 miles and at the next light, it acted like nothing happened.
I've got an '02 F150 with a 5.4L Triton. Despite being 10 yrs. old it's just passed the dealer warranty mileage about 80,000 miles. Due to a family situation it's been sitting idle for upwards of 2 or 3 weeks between startups.
When I do startup there's a puff of blue/geyish smoke, the engine idles rough for about 30 secs. and then everything smooths out and she runs normal.
I haven't noticed this issue before, I would add the temps here have been extremely cold the last few weeks. What direction do I point a mechanic in so he doesn't waste time or money on a diagnostic.
It's been a long time since I have posted here mainly because my truck was wearing a bow tie for awhile. But my wife was nice enough to tell me the Bow Tie wearing truck was making a funny noise on New Years Day (seems a small drum corps took up residence in the oil pan). So anyhow now I am back in a real truck . My new to me 1998 F150 5.4 Liter ran fine until yesterday. It started idling rough and almost stalling at red lights. about halfway home the CEL light came on and is throwing a P0171 code.
So far I have checked for vacuum leaks including all the elbows on the PCV system' tried the spray test with a can of flammable break fluid and a can of starting fluid (man I love the smell of that stuff) could not find a leak. Cleaned the MAF sensor and the K&N air filter (not a fan of these) IAC seems to be working. Only thing I know that is leaking for sure is the driver side exhaust after the cat. But that is the wrong bank if I am correct on which bank is which.
So why only one bank running lean and why does it act like it is only firing on 4 cylinders?
I have an 01 olds alero, I been having problems with the engine stalling out. i was told it may need a new fuel filter so I replaced filter and now it idles rough till it stalls. What to do next? I replaced the plugs 2 years ago also.
View 1 RepliesI have a1997 Nissan Altima 140k miles with the manual transmission. I have a fuel problem that I can't seem to solve. every 1-2 days and only intermittently and unpredictably my car starts to idle up and down and occasionally if I don't give it enough gas they car may stall but the stalls only happen when I am not pressing the accelerator, meaning only at resting idle. since I am fanatic on washing my engine, I initially though that spark plugs were dirty or not working, I changed the spark plugs the distributor cap and the wires but the symptom continues. then I check the resistance of all the four fuel injectors and all of them read at around 12.8 ohms. I have also treated the fuel system twice with injector cleaner, the kind that you find at a gas station but still, the problem persists.
if it is not too much trouble I have another smaller questions. if the car sits overnight or for a couple days, the shift is really easy but as the car warms up the shifting becomes harder. could the transmission fluid need to drained and replaced?