Had it before, code p1401. Changed out dpfe and it worked for 6 months. Now spark knock again. Now though I have no codes though. No vacuum leaks that I can find. New egr from before I had the problem. I applied vacuum to the green hose and it stumbled so the ports should be ok. Snytime I go above 3000 rpm i get the pinging. I replaced the dpfe again and no difference.
View 3 RepliesSo we finally found a travel trailer and picked it up yesterday. It is a 2008 Jayco 29A. Fiberglass with aluminum frame. 5345 dry weight, so shouldn't be too taxing on the Ex, but we towed it through parts of the NC mountains to get home and on steep grades it would downshift to 2nd gear and I would hear what sounded to me like pinging from the engine.
As far as I know the plugs are original, so should I just go ahead and replace them, or there also a possibility that this is just the notorious exhaust manifold leak? If all exhaust manifold bolts are still intact, is there a good test to know if it is the exhaust? No engine codes were thrown. The truck has 72k miles on it now.
My 2001 Corolla w/80k developing a considerably loud spark knock/engine pinging noise under acceleration. It throws no codes but pings like crazy and it never used to. It's happened gradual over a long period of time. I've cleaned the throttle body and have done all regular tune up items with no improvement. It doesn't ping at all on 93 octane, does some on 89 and terribly so on 87. Why is this? Does the 93 octane just act a a richer mixture of fuel to alleviate the ping? Should this sign point me in the direction that it's definately a lean issue causing the pinging?
View 13 RepliesI recently replaced the plugs & wires on my '97 3.0L XLT automatic, and now I'm hearing some pre-ignition (spark knock). Only happens under light load, as in climbing a slight grade on the highway. No CEL, no codes on my code reader. Was not happening before I did the work.
The plugs & wires I removed were the factory originals (AWSF32P & PG, 3 of each), truck only has ~85,000KM (~50,000 Miles) on it. Well maintained, & only used occasionally. The only mod from stock are the wheels & tires, I'm running 215/70 R15 instead of the stock 225/70 R14, the difference in the tire circumference is minimal.
The gap on the old plugs was just over .050", no evidence of any fouling or other problems. The new plugs are Autolite XP104 Iridium, which is what the Autolite catalog calls for. Plug gap was checked & set to .044", midway in the range called for by Ford (.042-.046).
I realize that the narrower gap on the new plugs will cause a slight advance in timing, and I have done a computer reset/relearn as per Paw Paw's instructions. I'm stumped.
I have a 1997 F-150 4.6. I have a cel and a heavy pinging that seems to get better the colder the outside temp is. If I unhook battery , the rehook the cel is gone for a day or so and the pinging is much less, but in a day or so it comes back on and condition worsens.
View 1 Replies03, 2.3 duratec, 163k, new timing chain, plugs (AP104), wires and intake. cleaned MAF, air filter, and ran two cans of sea foam through the intake and its still pinging. its driving me up the wall. truck runs perfect but seems to idle slightly higher and take longer to come down to idle after I got the timing chain and plugs/wires done. I've sprayed starting fluid around on top of the engine looking for vacuum leaks but found nothing. What should I try next?
View 14 RepliesMy wife's brother has a '97 F150 w/4.6L/automatic trans/4x4-OFF ROAD package. It's a standard cab, short bed (fleetside) truck.
It has 126k miles and he is METICULOUS about routine/periodic maintenance. He's owned it since new, has changed the plugs twice.
Is this a common issue with the '97 4.6L? He says he has tried using premium fuel to determine if it makes a difference. He said it worked but it still pings, just not as bad.
I just picked up a 1999 F150 5.4 with around 19k miles on it. Truck is in mint condition, stored in a heated garage since new. Before we made the deal I checked everything out pretty well including checking all the fluids, test drive, other usual stuff and didn't notice anything out of the ordinary. However, today I went for a short ride with the windows down I noticed a random pinging noise from under the truck. At first I thought it was a few small rocks bouncing off something metal under the truck, however it continued to do it randomly for the next 5 minutes. I would say I hear a ping every 15-20 seconds randomly. Doesn't matter if it's idling or under load, happens about the same either way. Aside from this, truck starts and rungs great and no error or warning lights have kicked on.
When I got home I started the truck back up and climbed under to see what it was. I found that the noise is coming from the exhaust system, mostly heard at the catalytic convertor. It resembles the metal expanding kind of ping, but I think its actually originating at the engine and the noise is just carrying through the exhaust system. I then went back to the engine bay and could hear the same random ping, just much quieter. I don't know the condition of the fuel, but based on the low miles I haven't ruled out a bad tank of gas. Only other issue with the truck is there is a bit of rust and corrosion on the inside of the exhaust tips and up into the exhaust pipe. They are still shiny and silver on the outside, just a little rust buildup on the interior of the exhaust. Hoping it's just the last 1' or so that is rusted
I have a ford f150 supercab XLT with the 4.6L triton. It starts and idles absolutely fine but when i push the gas to fast(when in park) it bogs down. I just changed the fuel filter aslo...No change.
If I floor it it Bogs then goes up to about 3000rpm (about halfway) and has trouble moving over that RPM or halfway. like theres a restriction of some sort.
If I gradually push the gas, it will go up in rpms and i can get it to about 2000 rpms then I can tack the rpm gauge out if I wanted. but never do.
Also when driving, it seems as if its lacking power..and just to add it does all this stuff while in gear also..
When running It smells of an exhaust leak. but I cant find one. And I cant smell it in the cab.
So there it is. If I think of anything else, or do anything. I will keep posting.
My Jetta wagon with 131K on it has a ping when I accelerate hard. I know it's not bad gas, but probably a carbon buildup. I've done a few seafoams that had some effect, but not much. I'm gonna do the water spray/steam next. Which components are prone to carbon buildup in these gassers that would cause ping?
View 4 RepliesI have a 2002 Ford F-150 with a 5.4 Triton. 212,xxx miles. I replaced the cops and the plugs about 6 months ago. I was pulling a trailer up hill last week and the engine was under a load doing about 3000rpm. It began to misfire and give me a flashing mil. However, before I went very far the engine began to run fine. It happened 3-4 different times. However, there is no code recorded. I've driven the truck nearly 100 miles with no problems, but I'm going to be pulling that trailer uphill again next week.
View 8 RepliesI have a 2002 SuperCrew 4x4 that makes a squealing sound that starts at 3000 rpm and slowly goes away as it approaches 4000 rpm. It does this when you are in park or in gear. I believe the torque converter is going bad, but just want to make sure before I tear it all down.
View 1 RepliesI have a 1997 f 150 4.6l, 145k miles, it seems that very slowly it is loosing coolant but i haven't noticed any leaks, it also burn about a quart of oil every 3000 miles but i was told that was normal?
View 6 Replies1997 F150 4x4 210,000 4.6L Windsor 5 Speed. Engine totally rebuilt 15k ago (besides for timing chains and tensioners). No codes thrown.
This morning when i started my truck, it made a knocking sound (almost like metal slapping) that seemed to be coming from the bottom end of the engine. At first I thought it was a spun bearing, but then the sound went away after a minute or 2. I have Google'd the problem, and have found a few diagnoses such as: oil draining back from the filter (or something like that), or an exhaust manifold leak that stops when the metal warms up and expands, or even the starter motor not being aligned right and not disengaging properly...
This is the first time this truck has ever done this. I changed the oil and filter about 1000 miles ago with 10w-30 oil and I believe a WIX filter. Also, this is the first time using the WIX filter
The weather this morning was around 51*F, so not too cold (to me).
Also, a few weeks ago when I changed my oil, I noticed milky white stuff only on the bottom of the oil cap, and in the feed neck. The rest of my oil looked like perfect used oil. After I noticed the milky stuff, about 2-3 times a week I would clean the stuff out of the neck and off of the cap. Just recently, there hasn't been as much milky fluid. My coolant level has not changed since I marked it during the oil change. A few buddies have said it might be condensation, but it's never been like this before.
I guess my question is, is this something that could put my truck out of service if left untreated? I'm assuming it's not a spun bearing because the noise goes away, but is there a possibility coolant could be leaking into the case but stay the same level in the reservoir?
I have a 2000 F-150 xlt off road with a 5.4. I have owned the truck since 2001. The truck has 170K miles on it and I change the oil between 3-4K miles. The last couple oil changes I have I have noticed I haven't been draining as much out as I usually do, this past oil change was about 3 quarts low. I thought it was very odd. The truck runs great and does not smoke or leak oil.
This morning I got in and noticed a tick or slight knock, thought maybe it needed warmed up. After a minute. I shut it off and checked the oil, to my surprise there was next to no in the engine! This has me very worried now. I haven't checked my coolant since last oil change so I'm not sure if that's where it's going. Where to start looking, I'm missing like 5 quarts of oil in 3300 miles. Again the truck run great and does not smoke at all. I was getting ready to change it this weekend, always run high millage 5w-30.
So for the past few months I have been hearing a knock sound when taking off from a stop. It does it every time, and its loud enough to hear distinctly. It sounds like it is coming from underneath the cab, maybe the trans or rear engine area. I thought maybe a mount. It only does it when taking off from a stop it does not do it while driving. Where to start. I hope it isn't serious, at this point it is more annoying than anything else.
View 8 Replies1999 F150 New 5.4 ~350 miles on it. Longtube Pacesetter Headers with cometic mls gaskets. Stainless bolts.
It is making a knocking sound and I can't tell if it is internal or from the headers. I have a video that I hope you all can tell what is. I tried listening to the block with a yardstick, but I couldn't notice a significant increase in volume but my hearing isn't the best. I made sure all the header bolts were tight, but no change in sound.
YouTube...
I've got a 97 truck, broke the crank, swapped in a motor from an 07. Heads down is 07, intake up is 97. had heads planed and a valve job with new seals done. Left it alone from the rings down. Got it in this weekend, running today. Ran it in the driveway with no load for about 30 minutes, top end was noisy for about 5 minutes till the top end got good and oily (I'm assuming). Purred like a kitten, sounded real smooth. Took it for a drive around the block, heard the clatter in the video below. It's almost always there when driving. Brought it back, turned it off to check oil, it was a quart low. Added oil, startup was VERY labored with a real hard knock in the bottom end. Ran like poo till I gave it some throttle for a couple seconds, then it cleaned up and idled well. Let it run for a couple minutes, turned off and let it sit for a couple minutes then started back up, same thing. Very labored with hard knocking.
View 2 RepliesMy 4.6 explorer has a spark knock noise when hot. When the engine is cold or on cold rainy days it does not make the spark knock noise. I have tried higher octane gas and octane boosters but it does not seem to work. Check engine light is not on and there are no codes. Could I have a bad egr valve or knock sensors with no codes...
View 5 Replies I have a 04 5.4 w/ a whipple supercharger. truck has 104k miles. Has a misfire in cyl 4 (p0304, p0316) And spark knock.. I've changed the plugs, coil on cyl 4, fuel filter, and today the o2 sensor(pass side upper, bank 2??). I've ran tecron injector cleaner threw it, and always used Chevron 90 octane. (highest in Alaska)
The noise only happens when under load, or accelerating with more then half the throttle. doesn't happen when i slowly get up to speed. What I could do next? About to take it to the dealer to run a full diagnostic test on it.. Also, does not hesitate or bog. drives normal just with that noise
I have a 1997 F150 4.6 V8 and as we all know these trucks are notorious for the spark plug blowing out. Although when I bought it I never had an issue until we put motorcraft plugs in. After a couple weeks of having these plugs in the porcelain blew out of the plug with the threads still in the head. The spark plug screws into a threaded insert which then screws into the head. We replaced the plug and nearly a month later the porcelain blew again. Replaced it, same story a week and a half later. Before the motorcraft plugs I had autolites in it, and I never had the slightest spark plug blowout problem. Should I just put an autolite in the cylinder that's blowing them?
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