I replaced my knock sensors on 2004 5.4L and now it will not idle without me keeping foot on gas. Idles down to +- 450-500 rpms. If I hold down gas pedla seems to run smooth. What to check to fix this problem?
View 10 RepliesI spent all day replacing my knock sensors and after getting everything back together now it wants to overheat. The thermostat is not that old before today there were no coolant problems.
View 1 RepliesI have a 2004 F150 5.4L 2WD auto. I had the cam phasers and timing cover done at the end of 2014 and the truck was great. Back in december, I parked the truck and when I started it the next morning, there was a horrible miss. I left it parked a month or two, then tried starting it up last week. Nothing.
So I had it towed to the shop. They found the starter was bad, and the only code it was throwing was P0341... Cam sensor bank 2. I had it towed back to my house, replaced the starter and the grounds and fired it up. It had the worst miss on the planet and died shortly after being started. I replaced both cam sensors, and now it starts right up and runs... but still has a bad miss.
I used my scanner and its still throwing A P0341 code almost instantly. It sounds like a bad miss that slightly gets better when you give it gas... but its not throwing any misfire codes or anything.
Just got 2005 screw fx4. Seemed to run ok 115000 mi.Had exhaust leak,I put on 3" cat back on. Then I noticed tapping at front of the engine.Turns out tim. chain guides are broken. looks like very common prob after reading many forum/threads. Anyway got timing chain kit, phasers, selinoids. Truck runs and sounds great.But so far had truck back 2weeks stalled 2x at idle.What next??
View 14 RepliesThe dealer tells me my batteries in my low tire sensors are bad. The low tire light on the dash won't go out. So I need to replace the TPMS sensors in my '06 type 5 Prius. I know I can pick them online much cheaper than at the dealer. My question is, is there some reprogramming that will need to be done. I'm assuming it will be some convoluted sequence with buttons on the dash similar to turning off the backup alarm, etc.
View 3 RepliesI've replaced the rear sensor and the two front ones on my 2002 Ltd, but the lights still on! It's driving me crazy...what now?
View 7 RepliesHow to test reverse warning system sensors? My truck about 75% of the time, once i put it in reverse the system goes to off. I assumed a sensor, but can't find any major resistance differences in them.
View 9 RepliesA 2004 and up f150. I found one in great shape for 5,000 dollars with 120,000. Drives good but it has a knock I'n the 5.4 engine. It gets quieter when the engine is warm. Should I avoid this truck or will I be okay with purchasing? Only thing holding me back from buying truck is the knock...
View 9 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
Knock or tick at 1000 rpm. Truck has 20000 miles on it. Dealer replaced cam phasers. What next?
View 1 RepliesI just bought this truck yesterday. During the test drive and everything it seemed all fine. After all the paperwork and the truck was actually mine. I noticed once it is all warmed up it seems to have a slight knock/tick? and a slight miss to it. I shot a couple videos, one up underneath where it sounds like most of the noise is coming from. Could it be an exhaust leak? Or is it something internal? Like the Cam Phasers, or a rod or something!
Here is a video around the exhaust area.
Here is up underneath the truck.
I have a 2008 fx4 with 75000 km it runs great but when I go on a long ride up hills or tow my trailer it acts up only when I get to my destination. the engine will run really rough and knock loudly seems only when I use reverse or sometimes park (and oil pressure in dash looks good),and if I shut ignition off and restart it no problems till I make engine work hard again.
View 14 RepliesI am working on a customers 08 F-350 5.4l has 135k on it. came in with a severe rattle/knock, running poorly, and dying at stops. ECM gave up 8 codes relating to the timing... Found the phaser replacement steps here on FTE and followed them and replaced the VCT solenoids since i was in there. Customer reported that he replaced the cam sensors already. Ran great for a day, and the next day when I pulled into the shop it gave me a rattle. Not as violent as before but noticeable. I special ordered the wedge and followed the replacement to a 'T'. I have no performance issues and no codes.
View 5 RepliesI am having a hard time locating a mechanical knock coming from my truck. This is not an engine knock but rather a clunking noise when I come to a slightly abrupt stop and sometimes when I take off or am steering. I have recently replaced my upper and lower ball joints and all the u-joints as well. My truck has a 6" Fabtech Coil over lift and a 3" body lift. The truck is also rather squeaky when going over speed bumps.
View 8 Replies2004 Passat 1.8t 4motion ... I am getting random misfire at idle like one hard knock then every thing is ok. I also have no MIL light or retrievable codes. I checked for vacuum leaks don't see any. Change out some old vacuum check valves. Replaced oil breather hose had crack. I Changed timing sensor, timing belt and fuel filter fuel pump died changed out. The old fuel filter had something rattling around in it is that normal? Also when I get gas no matter where, 91 octane only the car idle stumbles about 5 minutes after fill up then smooths out after a mile or so. EVAP purge valve clicks some times? Haven't check EVAP canister for saturation. Fuel regulator? I haven't checked fuel pressure. Car was not starting after sitting for week end hard start took 3 to 4 tries then starts up ok for some reason that is not happening now?
View 6 RepliesI recently bought a 2005 F150 King Ranch. I had a 900km drive to get it home but only mad it half way and am now stuck. I was stalling every time I came to a stop and eventually lost oil pressure. This is when I stopped driving and took it in. The shop said it had a knock in the lower end and stopped diagnosing it there. I can now sell it for parts and take a big hit or I can try and patch it myself.
I am assuming based on my symptoms it is a spun rod/main/thrust bearing. The mechanic was not very supportive to narrow it down to anything other than replace the motor.
How many km might I get out of this engine if I pull the motor and replace only the crank and rod/main/thrust bearings. This will not be my daily driver so if I can get another 50000-100000 km off of that, then it will last me at least 5 years.
This is of course assuming that when pull it apart I do not find an other major problems such as bent or broken pistons and rods or scoured cylinder walls. I am not that experienced of a mechanic, so I am not that confident about pulling the heads off and rebuilding the whole thing.
I just replaced all 8 injectors in my 01 F550 with remans from FFD. I have noticed a constant knock at idle but truck runs great. Blowby has no pressure behind it, truck does not smoke. Does this sound like a problem unrelated to an injector?
It did not make this noise before replacing the injectors
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I just bought s new battery got my 07 screw and now I have no radio and the remote start doesn't work.
View 7 RepliesReplaced battery today in my 08 xl and now have no power to the radio or the 5 amp fuse behind the kick panel. Where to go and what to do?
View 1 RepliesI bought two new factory fresh speed sensors to replace the ones. So, after work tonight I get the car up on jack stands and replace both sensors in about 45 minutes. Get it off the jack stands, torque down the rims and reset the dash lights. Nice clean dash display with no warning lights.
I drive it down the street, nice speedometer display and then, after about 100 yards, the warning lights come on and the speedometer flickers from 22mph to 2 then 10 then 1 then zero. I drive it back home, check the sensors and the connections, reset the lights again, drive it down the street and, same story.
I have a 2002 Toyota Camry LE V6 with codes p1135 and p1155. Both sensors that are supposedly faulty have been replaced.
The new sensors are denso 234-9043 and 234-9047. I am confident that the second one was the right one replaced as both the new and the old had a little green marker(the location is near the firewall.) not 100% sure about the other one.
The sensors were brand new so I don't know what the problem is.