Possibly broken IMRC shaft

[josh2017gt]

Just recently installed a gt350 intake manifold with the throttle body and new injectors. After having downloading my tune I started the car to find a check engine light. Ran codes which were: P0315, P068A, P2004, P2005. With a little research learned I just need a crank relearn and the other one just needs cleared? However I’m stuck on the P2004 and P2005 being that they are IMRC stuck open. I then proceeded to ask Lund the company who supplied me a tune. They asked if I had lockers and I said no and with some research seems that it most likely is the imrc shaft is broken. They did send me a tune file for having IMRC lockers. If the shaft is broken and the flaps stay wide open all the time is there a risk I’d be running using this intake manifold and unplugging imrc and running the tune they gave me for having lockers?

Sponsored

 

[josh2017gt]

Just recently installed a gt350 intake manifold with the throttle body and new injectors. After having downloading my tune I started the car to find a check engine light. Ran codes which were: P0315, P068A, P2004, P2005. With a little research learned I just need a crank relearn and the other one just needs cleared? However I’m stuck on the P2004 and P2005 being that they are IMRC stuck open. I then proceeded to ask Lund the company who supplied me a tune. They asked if I had lockers and I said no and with some research seems that it most likely is the imrc shaft is broken. They did send me a tune file for having IMRC lockers. If the shaft is broken and the flaps stay wide open all the time is there a risk I’d be running using this intake manifold and unplugging imrc and running the tune they gave me for having lockers?

I would like to save the money and not have to buy a new gt350 intake manifold but if that’s my only route I will do it. Just didn’t know if there was a safe way around this or not.

 

[NGOT8R]

Can you still lock them out with a broken shaft? I wonder if you can pull the shafts and flaps all together and not have to run lockouts? You might have to plug a couple of holes afterward, but this might be doable.

I just put lockouts on my GT350 IM, but haven’t put the car back together yet.

 

[josh2017gt]

Can you still lock them out with a broken shaft? I wonder if you can pull the shafts and flaps all together and not have to run lockouts? You might have to plug a couple of holes afterward, but this might be doable.

I just put lockouts on my GT350 IM, but haven’t put the car back together yet.

So from the description of the code it seems as if they are stuck open. However I need to pull of intake manifold and inspect it but would be curious as to if I can just run a tune as if they are locked out

 

[KingKona]

I don't understand how a new GT350 intake has broken IMRC shafts.

We're they broken during install?

 

[josh2017gt]

I don't understand how a new GT350 intake has broken IMRC shafts.

We're they broken during install?

I don't understand how a new GT350 intake has broken IMRC shafts.

We're they broken during install?

I didn’t buy it brand new had bought from a friend who ran it for maybe thousand miles or so. However now I need to pull intake manifold off and make sure shaft is broken and that’s what’s throwing the codes. However doubt he sold it to me with broken imrc shafts but who knows.

 

[Cobra Jet]

Just recently installed a gt350 intake manifold with the throttle body and new injectors. After having downloading my tune I started the car to find a check engine light. Ran codes which were: P0315, P068A, P2004, P2005. With a little research learned I just need a crank relearn and the other one just needs cleared? However I’m stuck on the P2004 and P2005 being that they are IMRC stuck open. I then proceeded to ask Lund the company who supplied me a tune. They asked if I had lockers and I said no and with some research seems that it most likely is the imrc shaft is broken. They did send me a tune file for having IMRC lockers. If the shaft is broken and the flaps stay wide open all the time is there a risk I’d be running using this intake manifold and unplugging imrc and running the tune they gave me for having lockers?

This thread, another M6G member repaired the broken IMRC shaft using JB Weld and it was fully functional again after the repair.
https://www.mustang6g.com/forums/threads/our-first-dtc-p0308.160243/

99% of the time, the IMRC failures are due to the broken shaft. Looking at images of the shaft, the break is occurring because the diameter of the shaft is too small for the torque being applied by constant activation.

 

[NGOT8R]

So from the description of the code it seems as if they are stuck open. However I need to pull of intake manifold and inspect it but would be curious as to if I can just run a tune as if they are locked out
[/QUOTE

It can’t hurt to give it a shot

 

[josh2017gt]

After removing the intake manifold and inspecting the shafts seems as if they are actually fine…. Think it could be the actuators.

 

[NGOT8R]

After removing the intake manifold and inspecting the shafts seems as if they are actually fine…. Think it could be the actuators.

Maybe the gears in the shaft sensors are chewed up?

 

[josh2017gt]

Maybe the gears in the shaft sensors are chewed up?

Any knowledge replacements of those gears? The flaps all move together when shaft is moved.

 

[NGOT8R]

Any knowledge replacements of those gears? The flaps all move together when shaft is moved.

Not a lot, although I did learn a little I. The past week or two when I made a thread here inquiring if it was possible to leave the sensors connected and remove the diaphragms to keep the PCM happy and avoid having to tune for lockouts. Here is a link to that thread and a couple of pics that I just took, showing the sensor cam or gear being rotated by hand. Notice how the imside of the sensor profile Is squared off like the IMRC shafts. It is quite possible that yours could have been stripped out and are no longer square, thus being The source of the failure.

https://www.mustang6g.com/forums/th...nts-is-it-possible.182920/page-2#post-3687503

 

[josh2017gt]

Not a lot, although I did learn a little I. The past week or two when I made a thread here inquiring if it was possible to leave the sensors connected and remove the diaphragms to keep the PCM happy and avoid having to tune for lockouts. Here is a link to that thread and a couple of pics that I just took, showing the sensor cam or gear being rotated by hand. Notice how the imside of the sensor profile Is squared off like the IMRC shafts. It is quite possible that yours could have been stripped out and are no longer square, thus being The source of the failure.

https://www.mustang6g.com/forums/th...nts-is-it-possible.182920/page-2#post-3687503

Great info thank you. Could the sensors be bad as well then too and maybe they just aren’t reading the shafts moving as well?

 

[josh2017gt]

Not a lot, although I did learn a little I. The past week or two when I made a thread here inquiring if it was possible to leave the sensors connected and remove the diaphragms to keep the PCM happy and avoid having to tune for lockouts. Here is a link to that thread and a couple of pics that I just took, showing the sensor cam or gear being rotated by hand. Notice how the imside of the sensor profile Is squared off like the IMRC shafts. It is quite possible that yours could have been stripped out and are no longer square, thus being The source of the failure.

https://www.mustang6g.com/forums/th...nts-is-it-possible.182920/page-2#post-3687503

Seems as either way I will need to replace those sensors right?

 

[NGOT8R]

Seems as either way I will need to replace those sensors right?

It’s possible that the sensors could be bad. In addition, if they to be losing their shape, I’d say replace them. It could be that the shaft has deformed the square and it just spinning inside. If you look closely at mine, you can tell the shape appears to be wearing/deforming already and my car only has 6400 miles on it. i

Sponsored