2010 5.4L 3V Rough Idle - Help
12-17-2020, 05:57 PM
#21
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I HAVE THE EXACT SAME PROBLEM with my 2004 5.4L 3V
i have replaced both of the VCT solenoids, with motorcraft, the screens were trashed.
i replaced both of the Cam sensors cuz i was getting cam timing codes.
then i discovered an intake manifold leak in the back next to the firewall, so i replaced the whole manifold and gasket.
still kept getting Rich AND Lean codes, so i replaced all 4 o2 sensors - rockauto had all 4 Bosch for the same price as 1 at the parts store.
and yet it still showed bad cam timing codes, Too Rich, and Too Lean codes... im like how the hell can it be Rich AND Lean at the same time......
then it hit me.... i remembered seeing an odd looking injector when i pulled the manifold out. so i replaced that one injector for like $25 on rockauto. (love rockauto)
and it finally started running like a normal truck again.
drove it around the block, it felt strong like bull and was able to light up the tires again lol. but as soon as it hit 190ºF it **** the bed and turned back into a pumpkin again.......
im like WTF!!!
im debating using Phaser Blocks and just be done.... but id rather not if i can actually fix it.
so i started watchin youtube videos again to see if there was something i missed.
i love watching that Makuloco guy on youtube. that dude knows a lot about these damn trucks.
one thing i just found is, and im about to just burn the truck down and walk away....he says its the cam shaft bearings.
he says when the motor warms up, and the phaser go to work, the oil pressure drops and it trips the phasers, because the gap between the cam and bearing is letting all the oil flow freely.
he said you can change out the oil pump and increase the flow... but im like F THAT MESS !! and now im thinkin bout just changing to a thicker oil and drive it till it i can buy another truck.
here is the video where he talks about 5.4L 3V oil pressure.
hot idle phaser knocking
please holler if anybody has a real fix for phaser limp mode at 190ºF.
i have replaced both of the VCT solenoids, with motorcraft, the screens were trashed.
i replaced both of the Cam sensors cuz i was getting cam timing codes.
then i discovered an intake manifold leak in the back next to the firewall, so i replaced the whole manifold and gasket.
still kept getting Rich AND Lean codes, so i replaced all 4 o2 sensors - rockauto had all 4 Bosch for the same price as 1 at the parts store.
and yet it still showed bad cam timing codes, Too Rich, and Too Lean codes... im like how the hell can it be Rich AND Lean at the same time......
then it hit me.... i remembered seeing an odd looking injector when i pulled the manifold out. so i replaced that one injector for like $25 on rockauto. (love rockauto)
and it finally started running like a normal truck again.
drove it around the block, it felt strong like bull and was able to light up the tires again lol. but as soon as it hit 190ºF it **** the bed and turned back into a pumpkin again.......
im like WTF!!!
im debating using Phaser Blocks and just be done.... but id rather not if i can actually fix it.
so i started watchin youtube videos again to see if there was something i missed.
i love watching that Makuloco guy on youtube. that dude knows a lot about these damn trucks.
one thing i just found is, and im about to just burn the truck down and walk away....he says its the cam shaft bearings.
he says when the motor warms up, and the phaser go to work, the oil pressure drops and it trips the phasers, because the gap between the cam and bearing is letting all the oil flow freely.
he said you can change out the oil pump and increase the flow... but im like F THAT MESS !! and now im thinkin bout just changing to a thicker oil and drive it till it i can buy another truck.
here is the video where he talks about 5.4L 3V oil pressure.
hot idle phaser knocking
please holler if anybody has a real fix for phaser limp mode at 190ºF.
12-17-2020, 06:17 PM
#22
Dielectrically 5w30
![[F2C]MaDMaXX's Avatar](https://www.f150forum.com/customavatars/avatar324923_9.gif){kind=avatar}
Yes, you can try a thicker oil, going to a 5w30 shouldn't be able issues at all, but if your engine has worn badly, you're just patching over the cracks.
12-17-2020, 06:23 PM
#23
Senior Member
We offer a complete, permanent solution for the 4.6 and 5.4 3 Valve modular engine's cam phaser issues. Our cam phaser noise repair kit will eliminate the moving portion of the cam phasers that is lacking lubrication by locking them in place, this quietens them up significantly. Of course we always recommend to make sure there are not any other issues like a broken timing chain guide or something similar while doing this installation.
Other than the usual culprits, these engines are very durable and have been proven to live a long trouble free lifespan.
We have customers telling us every day that they wish they would have found our solution sooner. You could replace all of the timing components but that won't help with the phasers not getting the oil pressure and lubrication they need.
If we can help with anything or if you have any questions about the kit please don't hesitate to reach out to us.
Other than the usual culprits, these engines are very durable and have been proven to live a long trouble free lifespan.
We have customers telling us every day that they wish they would have found our solution sooner. You could replace all of the timing components but that won't help with the phasers not getting the oil pressure and lubrication they need.
If we can help with anything or if you have any questions about the kit please don't hesitate to reach out to us.
10-05-2021, 11:18 AM
#24
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Join Date: Aug 2021
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I have a 08 5.4 170k I retimed the engine bought it non running it starts right up and runs fantastic until the engine reaches exactly 190 degrees then it idles rough no matter how you treat it it will be nice and smooth idling all the way up to 189.9 but the first time you touch the throttle at all over 190 it idle rough until it cools down still runs well and lots of power but idles really rough like everyone else I have a code saying cam and saying advancing/retarding full timing kit with phasers and vvts it does have a very weak battery from sitting. And its now been at the dealer for diagnoses for well over a month they don't know anything yet I tried unplugged the vvts before the problem and it still had the problem my only leads asking everywhere I can think of is oil pressure but if its oil pressure why can it idle perfect for literaly hours as long as you don't touch the throttle at all it runs really rough and shakes often a light ticking knock kinda noise but usually pretty quite just sound like a engine about to stall
12-24-2021, 12:04 PM
#25
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Battery checks out good.
Visual inspection of the wires and connections to cam position sensor and alternator look good.
I haven't had the best luck getting the truck fixed at the dealership in the past. But may have to give it another try. Alarmingly, after the plug change the truck is now running rough at speed and idle (before it was only at idle). Was thinking COPs, but don't want to keep pumping money into it.
I will report back on what is found.
Visual inspection of the wires and connections to cam position sensor and alternator look good.
I haven't had the best luck getting the truck fixed at the dealership in the past. But may have to give it another try. Alarmingly, after the plug change the truck is now running rough at speed and idle (before it was only at idle). Was thinking COPs, but don't want to keep pumping money into it.
I will report back on what is found.
01-31-2022, 05:20 PM
#26
Junior Member
Puschase
We offer a complete, permanent solution for the 4.6 and 5.4 3 Valve modular engine's cam phaser issues. Our cam phaser noise repair kit will eliminate the moving portion of the cam phasers that is lacking lubrication by locking them in place, this quietens them up significantly. Of course we always recommend to make sure there are not any other issues like a broken timing chain guide or something similar while doing this installation.
Other than the usual culprits, these engines are very durable and have been proven to live a long trouble free lifespan.
We have customers telling us every day that they wish they would have found our solution sooner. You could replace all of the timing components but that won't help with the phasers not getting the oil pressure and lubrication they need.
If we can help with anything or if you have any questions about the kit please don't hesitate to reach out to us.
Other than the usual culprits, these engines are very durable and have been proven to live a long trouble free lifespan.
We have customers telling us every day that they wish they would have found our solution sooner. You could replace all of the timing components but that won't help with the phasers not getting the oil pressure and lubrication they need.
If we can help with anything or if you have any questions about the kit please don't hesitate to reach out to us.
02-21-2022, 02:17 PM
#27
Super rough idel no power
Hey guy's! So I'm having similar problems also. I have a 2006 F150 5.4L Lariat for about 6 months now. Had a rebuilt tranny 3 months ago. $4,000 🇨🇦. Engine ran Great. Then about a month ago it thru a P0345 & P0349. A few days later the wife got 4 blocks and it died. Unfortunately so did the battery loosing any new codes. Then I had a "Crank No Start" for almost 8 days! 1st thing I did was change both camshaft sensors. It took over a week to finally get it running! During that time I changed/cleaned/inspected both camshaft sensors, safety neutral switch, egnition switch,grounds,vacuum, no Schrader valve but could hear the pump come on & and check spark on 4/8 coils, fuses& relays etc. New battery also. On the 9th day I had seen a video of a guy holding down your trip button and then turning your key forward. So I did and to my surprise it started and now ran. But it run/runs "like a bag of cats man" The night before I cleaned the throttle body and MAF sensor. It's been over a 2nd week now and was able to do short trips for codes due to how bad the idel is. EVERY TEST I GET CAMSHAFT POSITION SENSORS CODES! Plus now, all 4 o2's. The bank 2 sensor 1 was "high voltage and the other 3 kept changing from either stuck/rich or lean. So I replaced both o2's on the #2 side, did another short trip for codes and the last 4-5 times, I'm getting camshaft sensors( No Surprise) plus only the new sensor ( bank 2 sensor 1) saying it's rich & lean now lmao!
On another thread a few ppl said it may be the Phasor on the #2 side. I'm going on 3 weeks and just about ready to push it off a cliff man! Then I seen this discussion with similar issue and started thinking could it be the VTC solenoid? Before I take the valve covers off and drop the pan for inspection I was just looking for anyone that may have had similar issues or just something I might have missed before tearing everything down. I read somewhere hear about getting camshaft positioning sensors codes over and over and it could be phasers or VCTs? Appreciate any info guys! Thanks!
I'm assuming there's a way to test the VCTs ?
Was going to due the plugs ($220) & PLUG remover kit lol ($100) but, all 12 tests I keep getting camshaft positioning sensors codes. So I've held off thinking it may be top end problems.
On another thread a few ppl said it may be the Phasor on the #2 side. I'm going on 3 weeks and just about ready to push it off a cliff man! Then I seen this discussion with similar issue and started thinking could it be the VTC solenoid? Before I take the valve covers off and drop the pan for inspection I was just looking for anyone that may have had similar issues or just something I might have missed before tearing everything down. I read somewhere hear about getting camshaft positioning sensors codes over and over and it could be phasers or VCTs? Appreciate any info guys! Thanks!
I'm assuming there's a way to test the VCTs ?
Was going to due the plugs ($220) & PLUG remover kit lol ($100) but, all 12 tests I keep getting camshaft positioning sensors codes. So I've held off thinking it may be top end problems.
Last edited by LOCK N LOAD; 02-21-2022 at 02:37 PM.
02-21-2022, 09:14 PM
#28
I tapped the oil galley plug on the back of the passenger head to put mechanical oil gage and it is very accurate showing true oil pressure feeding the passenger side phaser ( the one that usually gets starved of oil 1st being at the end of the line for getting oil).
03-16-2022, 01:40 PM
#29
Same issue, different truck...
I know that there is quite an age gap, but I used to have a 97 expedition, Eddie Bauer edition with the 5.4. I was in a tight spot and needed a vehicle fast, which is the only reason I'd bought it regardless of its rough idle. They slapped a valid sticker on it and sent me on my way. For the entire time I owned that truck before the frame broke over the rear end, I had changed every spark plug, every coil, alternator, fuel filter, pcv valve, fuel rails, injectors, throttle position sensor, tried lighter, and thicker oil... Needless to say the price tag was certainly catching up quick with the retail tag. I had eventually given up and drove it until I saw cab mounts poking through the back floor.
10-11-2023, 08:19 PM
#30
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Join Date: Oct 2023
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How do I find you guys
We offer a complete, permanent solution for the 4.6 and 5.4 3 Valve modular engine's cam phaser issues. Our cam phaser noise repair kit will eliminate the moving portion of the cam phasers that is lacking lubrication by locking them in place, this quietens them up significantly. Of course we always recommend to make sure there are not any other issues like a broken timing chain guide or something similar while doing this installation.
Other than the usual culprits, these engines are very durable and have been proven to live a long trouble free lifespan.
We have customers telling us every day that they wish they would have found our solution sooner. You could replace all of the timing components but that won't help with the phasers not getting the oil pressure and lubrication they need.
If we can help with anything or if you have any questions about the kit please don't hesitate to reach out to us.
Other than the usual culprits, these engines are very durable and have been proven to live a long trouble free lifespan.
We have customers telling us every day that they wish they would have found our solution sooner. You could replace all of the timing components but that won't help with the phasers not getting the oil pressure and lubrication they need.
If we can help with anything or if you have any questions about the kit please don't hesitate to reach out to us.