Ford F-150 - 1997-2003 :: 2002 4.2L V6 - Shutters At 55 MPH / Backfiring In The Intake When Leaving A Stop
Feb 20, 2013
Ok, I was reading the one on the V8s, but not sure with the V6s. First off, let me tell you what has been done. I replaced fuel and oil filters, Plentum seal, and bolts, replaced plug wires, and coilpacks, and the PCV valve. I can't remember what else I did, but it was before Spring Break last year when my daughter and I were taking a trip across the US to pick up a motorcycle and do site seeing. Anyways, before I did all of this, the truck was getting to the point where I could not get it over 45 or it would feel like the trany was going. When I pulled the plugs out, they were running lean. I have had my Check engine light pop on with the Cam Pos Sen, but I have replaced that. That code has never came back, but it is still running lean, and backfiring in the intake when leaving a stop. I am wondering if the fuel pump may be going out, or what else it might by. I work on older cars with carbs, so not all that sure with the injection stuff.
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We have a 2002 F-150 4.6L 4x4. The engine went bad and we bought a new engine (remanned ATK). Had this engine installed and a year later it was bad and was determined it was a manufacturer defect so they sent a replacement engine under warranty.
We had this new engine installed. The mechanic fired it up and it backfired through the intake. They claim that the compression is good, the fuel pressure is good, and the timing is correct. Can they check these things when the truck is not running? The mechanic is completely frustrated with the situation...
Everything I read leads to a timing issue but they say they checked it so before I go in there screaming I want to make sure it couldn't possibly be anything else...
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I have a vehicle that came in on the hook its an 01 exploder4.0 sohc no start.. when cranking it will back fire through intake. no dtc's however its also showing all monitors not set?? dead battery erasing keep alive memory I don't know. Here's what i do know apparently it had gotten partial tune up all left side plugs and wires changed. All right side plugs and number 3 wire factory. I have plenty of fuel pressure. It appears that all cylinders have 150 psi for compression.
I changed all plugs and spark tester is showing there is spark at the plug, (yes at all) just cranks and cranks and then back fires. I also have removed front ho2s to rule out blocked cats, wires are not crossed. I have an rpm signal which should have been evident when I had spark and injector pulse. have not changed the wires nor the coil which is a 6 pack coil. (Boss refuses to get them for me since i have spark )even though I told him there was some arcing.
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I now purchased a 1997 Ford F150, I bought it with the past owner saying it needs a transmission but it drives nice until I get to about 35mph, at which point it feels as if the front diff is stuck in 4wd and it shakes violently, I have read other forums and was hopeful that it was the transfercase issue where you take the transfercase motor off and turn it into 2wd manually and it didn't seem to change anything, it sounds like it is trying to change from 2wd to 4wd high and then to 4wd low, but it doesn't seem to sound like it is actually changing anything, the turning on dry pavement does change after switching it but it still shakes and feels like the front end is keeping it from being in 2wd, as I have done very little work on Fords, in the past and I do like the feel of this truck and would love to fix it myself and not take it to someone to have it fixed.
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I have a 2001 F-150 4x4 SC with a 4R70W. As a a couple weeks ago the transmission (or so I think) is slipping. When I take off from a red light the truck is shuttering. I also can be driving along at 55-60 mph and the truck jolts and shutters. I was reading some other threads and some guys think it could be a misfire, but since mine does it from a stand still i don't think it is. Just throwing that out there because it could be a factor, but once again I don't know.
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I've got a 2000 f150 with a 5.4 and 135,000 miles. The other day it was driving fine then i stopped and got gas and after that it was boggy and running rough so i thought bad gas but i ran through that gas and got more at a different store. The cel came on i got it checked it was misfire cylinder 1 so i put new cop, spark plug, and injector. Unhooked the battery and then the light came back on so i ran the code and now im getting a p0171. I checked the pcv and sprayed around the intake and vacuum lines. I also checked the pcv hose and elbow in the back and i found nothing its a fairly new hose. So, it does run rough it shutters a lot.
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I have a '00 Ford ranger and a '99 f-150 , when leaving the doors open , interior lights go off after 10-15 minutes in the ranger but not on my 150. Is there a relay or something aftermarket that makes this possible on the 150 ?
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My 2002 F-150 with the 5.4 has an issue with a high rev (1000 RPM for a few seconds) while at a stop sign, along with a clunking/banging sound coming from under the truck. This is when I have the brake mashed all the way, and this all happens at the same time, almost every time I come to a stop at a stop sign or light. I do have an intake manifold leak, which i have recently determined, but I do not know if the high rev at a stop sign has to do with the manifold leak or to do with the transmission sounding thump I hear. Could this be a torque converter not unlocking, and then suddenly unlocking? Because after the thump sound, the RPM's go down to around 650 from 1000 every time.
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I have a 2002 f150 with about 165,XXX miles on it. drove to work one morning and got out and locked the truck and the horn went off and wouldn't stop. after a few minutes of pushing the horn button down and applying pressure it finally stopped. well this went on for few days, and then it stopped so i figured it was done. Well few days ago i tried to push the horn down at another driver and it wouldn't work. then i realized that my controls on my steering wheel did not work either.
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My truck over heated and I now have a looks like a pin hole leak next to the front injector on the left side looking at it. I have used sealers and it does not work. Water pools around the injector. Does this sound like a cracked intake housing? I have done many repairs but this is something I'm not sure I want to do. I can get a new intake setup for 160.00 on rock auto but ford would be in the 300 or more just for the part.
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I've got a 1997 F150 with the 4.2L V6. Before I got it last summer I did some research, but apparently missed the issue with the intake manifold gasket leaks on these early engines. It seems to be a very slow leak, but obviously I want to get it fixed. I called Ford to see if it had had the recall work done on it, but all they could tell me is that there wasn't an open recall on my truck (with the exception of the recent fuel tank strap recall). Their system apparently only goes back 10 years, so they couldn't even see the freakin' recall. So, I've got a few questions:
1) I know I didn't post much info, but does this seem like an intake manifold leak?
2) Are there any special tools needed to change out the gasket myself?
3) Can you all recommend any replacement gaskets? I found a few different manufacturers of gaskets, but I'm sure some are better than others.
4) Can this issue cause the computer to throw the loose gas cap code (P0455 if I recall correctly).
5) Would it be worth it to just get a new truck? I really wanted a diesel in the first place, but I also hate to give up on a nice truck with only 115,000 miles.
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First of my truck is an 03, xlt 4.6 5-speed with 82,000 miles. Almost always when i come to a stop i can hear a faint humming that is coming from the engine compartment. There is no pattern or set way that this humming happens, it just comes and goes when at idle. As soon as you put load on the motor it will go away. I got under the hood today and fired it up, nothing, gave it just a little throttle and sure enough here is this odd humming. It is coming from in the air intake. Also while i was under there i noticed that the cable that is right next to the throttle cable is very loose, i am not sure what this cable goes to or if this could be part of my problem
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My 97 f150 5.4 started missing on 5,6 it had antifreeze on top of the spark plugs but i cant figure out where its coming from my truck has been loosing coolant and it seems like the system is holding pressure because every time i take the cap off the radiator overfill i can hear it hissing then i see the antifreeze level plummet there's no visible leaks that i have seen when the truck is running an missing it steams out the exhaust but when its no missing it doesn't seem to be there's no milky oil or anything the thermostat doesn't seem to be leaking either the truck has over heated a couple times due to the antifreeze disappearing or the temp wont move at all then it shoots all the way to hot and cools down within seconds to normal i just put a new thermostat in. Also it sometimes misses on 4 and my exhaust smells like straight gas i put 4 gallons in it got 29 miles out of it .
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Replaced head gaskets on 2003 f-150 5.4. Now I can hear a ticking noise in middle of intake by #5 port. Maybe timing is off 1 link?
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I have a 1998 Ford f150 4.6 2x4 i have a coolant leak on the upper intake. It comes out on the back left of the intake through a metal pipe. Well where the metal pipe is (pressed in) to the intake. Now i talk to the guy at ford dealership in the parts he said it is called the (heater pipe). He also told me that the part is 21 dollars but I have to press it in and if that does stop the leak he said I would have to buy a new intake. Now here is the problem I can not find any info regarding this heater pipe. I don't know how to remove it properly, why it is leaking. I can't find it in the handbooks that i have read so far.
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I tried searching, but couldn't find anything. I have a '97 F-150 with the 5.4L and I have a plastic line coming off of my intake that I don't know where it is supposed to go. I don't know how or when it got disconnected, but I can't seem to find anything within reach of it that it can connect to.
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I have a 98 f150 4.6 4x4 with 175.000 miles, I suspected the intake gasket is leaking, I'v never done this before. What is involved with this type of repair? Will the intake gasket leak bad enough to leak antifreeze on the floor? Is it okay to continue to drive with this problem? Bad weather is on the way.
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I have a 03 5.4 F150 SCrew... The intake was leaking on the passenger side (water outlet tube meets plastic).
Putting in the Dorman replacement and noticed that the front cylinder drivers side (#5) had a decent amount of coolant in it.. None of the others did. I've drained the coolant already and was wondering should I just put this back together and see?
The water outlet crossing has a hole right next to this cylinder and I can't see any cracks and not sure if the gaskets were leaking under it.
Seems like if the head gasket was blown I would see it in more cylinders? It never smoked or run bad before I got this leak... Drove it maybe 10 miles with it leaking out onto Cyl#1. Ran fine, never missed.
I just don't want to put this back together if the head gasket is blown but I don't know what to do.
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I am about to replace the intake manifold and gaskets. I know all of that process, but first question is if there is anything i should do whilst in there. Second question; what can I do with my intake to get more power? Mainly just kind of wondering before I get my parts ordered.
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so new motor new intake , rear passenger side decides to leak when roughly about 10 degrese or lower and being -13 yesterday and-18 this morning.
last year it did this n i put a nother hose clamp on that rear tube and just happened to stop . n now back but the ting is that its not wet at all at the hose but at top of head bottom intake hmm . this is all just during the initial start of truck stops even before truck really gets warm
if i tke it off n its messed up i hope its warrentied even though i painted it. if fine i guess add some gasket maker ?
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I just installed a cold air intake on my 01 f150 with a 5.4 and as soon as i started it after the install there is a loud humming coming from the intake but with some throttle it goes away. ive looked around on some of the other threads that suggest the iac valve usually causes this humming noise but why would it go bad with the install?? also i broke iac breather trying to remove it from the old hose to install with the new hose so i just connected the new hose directly to the inlet behind the intake until i can get another one to replace it. could this be causing the humming as well??
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