2004 V8 trition Knocking at 1100 RPM - FordTough.ca - Home of Canadian Ford Truck Enthusiasts
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post #1 of 12 (permalink) Old 02-01-2015, 04:44 PM Thread Starter
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2004 V8 trition Knocking at 1100 RPM

I have a 2004 F150 Lariat Supercrew 4x4 . I got a new transmission put in and a Oil change shortly after. A few weeks later I got a knocking noise. No check engine light, starts up great, No real notable problems just the noise. At Idle no noise just the usual cam phaser ticking, but once the engine is warmed up at about 1100 RPM it starts knocking like a . I took it to a few different shops one was sure it was the timing area so they replaced the timing chain, tensioner, pully. ect. Took it to a ford dealer where he didn't really look at it just said you need a new engine. went to another ford dealer where they said rod knock or stuck lifter but if that were the case shouldn't it knock constantly? another shop said VCT soleinods, Spark plugs. another said it could be the flex plate! so all in all I paid a bunch of money for people to look at it to have them say they don't know but a whole bunch of suggestions have led be to be confused as to just buy a new engine or have a go at the other things. I'm aware of the cam phaser diesel ticking noise they notoriously have but thats not it. Has anyone else had this problem? I've parked it for a few years to be safe but started it weekly. I didn't intend on having it sit for so long but due to work situations and what not it has sat but now I'm on a mission to make it my daily driver again. I'm no mechanic but I'm not totally green to vehicle mechanics so ill be inspecting what i can within my limits, any suggestions or ideas would be greatly appreciated!

Also I have two youtube videos posted of it If anyone is willing to have a listen and tell me what you think.http://youtu.be/VyZG587ZaS0
http://youtu.be/Bp4U6JBkDzU
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post #2 of 12 (permalink) Old 02-01-2015, 07:00 PM
 
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Welcome to fordtough.ca, sorry your first post was related to having problems, hope you get it figured out.

Got no help for you, sitting for a couple of years probably didn't help things, but wtf, it is what it is with work situations and all.

Some smart guys from across the country on here, maybe they'll find you a solution.

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post #3 of 12 (permalink) Old 02-01-2015, 10:34 PM
 
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Sounds like valve train knocking on the second vid. First one sounded like rod knock or piston slap. Sounds like it's time to look at oil flow issues. I'm thinking the oil isn't keeping pressure and flow consistant. Flex plate is a possibility, use your phone to record where the sound is loudest. If the torque converter nuts weren't new then they may have come loose. Pull the inspection cover and try tightening them. If it's loudest near the rocker covers, pull the covers and check the valve train. Try running with valve covers off and see if a lifter has collapsed or a spring broken. Something along those lines. Welcome to fordtough.ca.

Edit - Just remembered something. Check the starter is in straight and tight and the bellhousing bolts.

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post #4 of 12 (permalink) Old 02-05-2015, 06:48 PM Thread Starter
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Originally Posted by SVT4MT View Post
Welcome to fordtough.ca, sorry your first post was related to having problems, hope you get it figured out.

Got no help for you, sitting for a couple of years probably didn't help things, but wtf, it is what it is with work situations and all.

Some smart guys from across the country on here, maybe they'll find you a solution.
Thank you! Yeah sitting a while probably didn't help but also didn't do any further damage Hopefully she'll be back on the road soon enought.
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post #5 of 12 (permalink) Old 02-05-2015, 07:27 PM Thread Starter
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Originally Posted by Destructicon View Post
Sounds like valve train knocking on the second vid. First one sounded like rod knock or piston slap. Sounds like it's time to look at oil flow issues. I'm thinking the oil isn't keeping pressure and flow consistant. Flex plate is a possibility, use your phone to record where the sound is loudest. If the torque converter nuts weren't new then they may have come loose. Pull the inspection cover and try tightening them. If it's loudest near the rocker covers, pull the covers and check the valve train. Try running with valve covers off and see if a lifter has collapsed or a spring broken. Something along those lines. Welcome to fordtough.ca.

Edit - Just remembered something. Check the starter is in straight and tight and the bellhousing bolts.
Thanks for the Input. I have checked the oil flow/ pressure and its good. I've had the starter and alternator changed and it changed nothing.
I'm leaning towards the Torque converter / Flex plate area since it happened shortly after getting a new transmission I have a feeling it might have something to do with it.
I'm going to start there once the weather warms up a little.
I tried to check the bolts on the flex plate but how its set up I cant get a bite unless I pull the trans and everything apart to get at it.
http://youtu.be/7H-jmQ8fIo8I recorded a little video of where its loudest and defiantly at the Converter, Once I pulled the rubber plugs and the inspection plate off its louder so that's why I'm leaning that way.
I priced out a new Converter from a Ford dealer ship and they were asking $560, + $100 back with the core and the Flex plate $345, Called Kingsway auto parts and they want $138 with the old core and Flex Plate $48 It's amazing how much of a difference it is with dealership prices.
The way I see it a couple hundred bucks appose to a couple grand for a new engine its worth a shot!
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post #6 of 12 (permalink) Old 02-15-2015, 11:55 PM Thread Starter
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So I called the place that did my transmission to make sure they put the right transmission in which is 4-Automatic (4R75W) and today I dropped the transmission to check the flex plate which looks ok, I got a new one for 50$ from Kingsway auto so I will probably replace it anyways also the Torque converter says right on It 4R70W since its late sunday and holiday monday nothing is open to get it confirmed but does anyone have any input as to why they would have a 4R70W converter in a supposedly 4R75W Transmission?
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post #7 of 12 (permalink) Old 02-16-2015, 01:22 AM
 
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Same convertor. Zero problem there.

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post #8 of 12 (permalink) Old 02-16-2015, 06:56 AM
 
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I'm a bit curious. How did you check the oil pressure and flow?

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post #9 of 12 (permalink) Old 02-22-2015, 10:31 PM
 
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You cannot check oil 'flow' or 'pressure' to the heads on these things. Regrettably that is where the pressure is needed most. Measure all you like at the oil pressure switch and all you're getting is a reading at the bottom end.

The way that you describe the noise being present only when at full operating temperature - coupled with the fact that the thing rattles like mad at 1100+ rpm - is consistent with oil pressure derived timing issues. Without hearing the noise in person, I'm fairly confident guessing that the dealer prescribing a long block was right on the money.

The problem is finding where the oil pressure is dropping, and it can drop from a variety of different places .... eg. replace the phasers and solenoids for a bit of a band aid solution, but really the pressure is being dropped by scored cam caps and blown out tensioners. so then what? put on new heads, cams and timing drive components and pray that the bottom end is good and no oil passages are plugged? as a flat rate tech that is a direct sentence to a comeback. there's no way that i want to guarantee a repair like that on an old engine which i haven't been inside to rebuild. i quote a long block almost every time.

Check out my post at the bottom of this page ... http://www.fordtough.ca/forums/showt...=phaser&page=3

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post #10 of 12 (permalink) Old 03-14-2015, 05:14 PM Thread Starter
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A little update I swapped out the Flex plate even though it looked ok and torque converter the noise was still there and I damaged a 120$ sensor so had to replace that, after lots of reading and researching also picking the brain of a Ford mechanic where my cousin works I've inspected the cams tensioners and pulleys and they all look ok, with the valve cover removed inspected the rockerarms and rods Cam was not scored and everything looked ok there. Prior to the transmission work I had the noise but no Engine codes after the sensor got damaged I got 3 codes a P0010 Intake Camshaft position sensor actuator bank 1 where I changed out the VCT solenoid and the Camshaft sensor. P2106 Throttle actuator control sensor Where I swapped out the throttle body and the P0175 Input shaft speed sensor as I mentioned the transmission sensor I damaged swapped all those out cleared the codes and went for a drive and she drives quite nicely felt great but the noise is still there no codes came back. I plan on doing a exaust check when the weather cooperates. I was suggested it could be a Rod bearing or a terminal Main bearing. Anyone ever had this before? what are the symptoms? I would naturally think if it were main bearings it would be loud consistently and probably shake the piss outta the truck? I could be wrong. Ive tried alot of different things with no result with the noise!! at some point I got to give up and replace the engine but it would still be nice to know the root cause. I have no noticeable symptoms other than the noise so It's hard to convince me I need a new engine..But im getting close.. so overall review,Starter, Altenator new, Flexplate transmission new, Timing chains tensioners guides new, VCT solenoid changed new. Input shaft sensor changed new, Throttle body New, Camphasers good, Fuel Injectors are all pumping, Spark Plugs are all firing, Rocker arms good. Manual Oil pressure test through the Oil sender by the Oil filter at hot idle was about 29 psi. Lol any input would be greeeattt!
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