If you get your 2018 5.0 computer updated it will clunk
04-26-2019, 09:48 AM
#1
If you get your 2018 5.0 computer updated it will clunk
The new flash pcm computer update causes the intake manifold runners to open and close at a faster speed.. thus causing a clunk. Its loudest when torque is highest (climbing hill, pulling a camper). I have verified this on a few trucks. No clunk - updated - clunk. Now the ford dealer after WEEKS just told me the same thing.
"The recent calibration is causing the intake manifold runner control to open and close harder. The noise is normal and will not affect the mechanical operation of the vehicle."
So.. they are not fixing it. There is no fix. They said they CAN"T roll the programming back to the original. I know I can get someone elses original and slap it on my truck using forscan.. I either have to do that and worry about future warranty concerns OR get rid of the brand new truck.
Wanted to give everyone a heads up. Do NOT get your truck updated.
(If you think you have this problem, unplug the vac port on the front of the manifold. I have photo. Clunk goes away. Check engine light comes on but goes off after you plug it back in and drive it a bit)
"The recent calibration is causing the intake manifold runner control to open and close harder. The noise is normal and will not affect the mechanical operation of the vehicle."
So.. they are not fixing it. There is no fix. They said they CAN"T roll the programming back to the original. I know I can get someone elses original and slap it on my truck using forscan.. I either have to do that and worry about future warranty concerns OR get rid of the brand new truck.
Wanted to give everyone a heads up. Do NOT get your truck updated.
(If you think you have this problem, unplug the vac port on the front of the manifold. I have photo. Clunk goes away. Check engine light comes on but goes off after you plug it back in and drive it a bit)
04-26-2019, 12:01 PM
#2
Senior Member
What is the number of the TSB you are refering to that you had performed?
The new flash pcm computer update causes the intake manifold runners to open and close at a faster speed.. thus causing a clunk. Its loudest when torque is highest (climbing hill, pulling a camper). I have verified this on a few trucks. No clunk - updated - clunk. Now the ford dealer after WEEKS just told me the same thing.
"The recent calibration is causing the intake manifold runner control to open and close harder. The noise is normal and will not affect the mechanical operation of the vehicle."
So.. they are not fixing it. There is no fix. They said they CAN"T roll the programming back to the original. I know I can get someone elses original and slap it on my truck using forscan.. I either have to do that and worry about future warranty concerns OR get rid of the brand new truck.
Wanted to give everyone a heads up. Do NOT get your truck updated.
(If you think you have this problem, unplug the vac port on the front of the manifold. I have photo. Clunk goes away. Check engine light comes on but goes off after you plug it back in and drive it a bit)
"The recent calibration is causing the intake manifold runner control to open and close harder. The noise is normal and will not affect the mechanical operation of the vehicle."
So.. they are not fixing it. There is no fix. They said they CAN"T roll the programming back to the original. I know I can get someone elses original and slap it on my truck using forscan.. I either have to do that and worry about future warranty concerns OR get rid of the brand new truck.
Wanted to give everyone a heads up. Do NOT get your truck updated.
(If you think you have this problem, unplug the vac port on the front of the manifold. I have photo. Clunk goes away. Check engine light comes on but goes off after you plug it back in and drive it a bit)
04-26-2019, 02:20 PM
#3
I went initially went in for
18-2274 - harsh shift
18-2354 - engine rattle
KTFK5B6.H32 is the calibration last I checked.
04-26-2019, 02:38 PM
#4
Once I learned that the clunk was intake runners and not the transmission I ceased caring. Just another engine noise to me.
The following 3 users liked this post by mikeinatlanta:
04-26-2019, 03:28 PM
#5
The dealer can do it via IDS. They just need to download the file and flash it. I don't believe that is within the scope of Forscan, and I don't believe there is any way to just "get someone elses original". I always download a backup of my current calibration before updating to newer just for this reason.
The new flash pcm computer update causes the intake manifold runners to open and close at a faster speed.. thus causing a clunk. Its loudest when torque is highest (climbing hill, pulling a camper). I have verified this on a few trucks. No clunk - updated - clunk. Now the ford dealer after WEEKS just told me the same thing.
"The recent calibration is causing the intake manifold runner control to open and close harder. The noise is normal and will not affect the mechanical operation of the vehicle."
So.. they are not fixing it. There is no fix. They said they CAN"T roll the programming back to the original. I know I can get someone elses original and slap it on my truck using forscan.. I either have to do that and worry about future warranty concerns OR get rid of the brand new truck.
Wanted to give everyone a heads up. Do NOT get your truck updated.
(If you think you have this problem, unplug the vac port on the front of the manifold. I have photo. Clunk goes away. Check engine light comes on but goes off after you plug it back in and drive it a bit)
"The recent calibration is causing the intake manifold runner control to open and close harder. The noise is normal and will not affect the mechanical operation of the vehicle."
So.. they are not fixing it. There is no fix. They said they CAN"T roll the programming back to the original. I know I can get someone elses original and slap it on my truck using forscan.. I either have to do that and worry about future warranty concerns OR get rid of the brand new truck.
Wanted to give everyone a heads up. Do NOT get your truck updated.
(If you think you have this problem, unplug the vac port on the front of the manifold. I have photo. Clunk goes away. Check engine light comes on but goes off after you plug it back in and drive it a bit)
04-28-2019, 01:32 PM
#6
You would care if its as loud as mine. Everyone that rides in it makes a comment.. going up hills and pulling something makes it loud every single time I get off the gas pedal. The tech told me that ford told him that they cannot go back to original calibration.
Last edited by arcticcatmatt; 04-28-2019 at 01:37 PM.
06-17-2019, 10:14 AM
#7
Ford has had my truck for over 40 days in and out.. for the engine rattle and this clunk.. The rep on the phone is the most unfriendly woman I have ever spoken with.. Kim. Regional manager. She could give a rats *** what I think. They are saying my noises are all normal. HA
1. Buy truck. No noises.
2. Hear under hood rattle and harsh shifts
3. Truck is reprogrammed by dealer because TSB for the rattle and shifts
4. TSB does nothing, still rattles and now there is a clunk on decel under load.. higher load, the louder the clunk
5. Ford determined noise is from intake manifold. New manifold goes on. Clunk still there. Ford dealer tells me all vehicles are doing this after being reprogrammed.
6. Ford area manager tells me "normal characteristic" and gets off phone with me.
Are you kidding me???
1. Buy truck. No noises.
2. Hear under hood rattle and harsh shifts
3. Truck is reprogrammed by dealer because TSB for the rattle and shifts
4. TSB does nothing, still rattles and now there is a clunk on decel under load.. higher load, the louder the clunk
5. Ford determined noise is from intake manifold. New manifold goes on. Clunk still there. Ford dealer tells me all vehicles are doing this after being reprogrammed.
6. Ford area manager tells me "normal characteristic" and gets off phone with me.
Are you kidding me???
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06-17-2019, 04:47 PM
#8
Here is a question for those who know the system. How does the runner valve actuate? Would it be possible to slow it a bit with a restrictor in the vacuum line or elsewhere internally?
06-20-2019, 10:10 AM
#10
Ford has had my truck for over 40 days in and out.. for the engine rattle and this clunk.. The rep on the phone is the most unfriendly woman I have ever spoken with.. Kim. Regional manager. She could give a rats *** what I think. They are saying my noises are all normal. HA
1. Buy truck. No noises.
2. Hear under hood rattle and harsh shifts
3. Truck is reprogrammed by dealer because TSB for the rattle and shifts
4. TSB does nothing, still rattles and now there is a clunk on decel under load.. higher load, the louder the clunk
5. Ford determined noise is from intake manifold. New manifold goes on. Clunk still there. Ford dealer tells me all vehicles are doing this after being reprogrammed.
6. Ford area manager tells me "normal characteristic" and gets off phone with me.
Are you kidding me???
1. Buy truck. No noises.
2. Hear under hood rattle and harsh shifts
3. Truck is reprogrammed by dealer because TSB for the rattle and shifts
4. TSB does nothing, still rattles and now there is a clunk on decel under load.. higher load, the louder the clunk
5. Ford determined noise is from intake manifold. New manifold goes on. Clunk still there. Ford dealer tells me all vehicles are doing this after being reprogrammed.
6. Ford area manager tells me "normal characteristic" and gets off phone with me.
Are you kidding me???
Good luck getting it fixed. I wouldn't blame you if you ditched it.
