Turbo Boost Issue

[gobluemustang]

I have a 15 ecoboost premium auto. I have had an intermittent issue with the turbo not working only providing about 3-4 lbs of boost. It has happened twice now. It was like driving a regular 4 cylinder engine. The first time it happened it there was a rattling pipe sound when I tried to accelerate. It sounded like it was in the back of the engine. The second time it happened it sounded less like a rattle but a pipe sound and almost flute like. Both times it went away after I shut the car off and restarted it. Both times as soon as I restarted it I had full boost and the car ran great. Both restarts were immediate too, meaning I shut it off and restarted it and did not let it cool down. I have a Roush CAI and I double checked to make sure all the fittings were tight and everything looks fine. That is my only mod and I always run 93 octane. I had it at the dealer for my recall after the first time. They told me it was hard to troubleshoot because it was it happening there was no codes. They told me to bring it in when it is happening. That is going to be difficult to time right if I get the chance.

Anyone else having this issue or have an idea of what could be?

I read online some people have a similar problem when the internals of the catalytic converter get burned up or break loose they can shift and block the flow. However, if this was the case I don't see how shutting off the car and restarting would immediately fix it.

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[ryant601]

I see you mentioned you checked the fittings for your CAI, check the pipes for the intercooler. More than a few of us experienced loose pipes.

 

[Legionofone]

Wastegate malfunction?

 

[tsunami]

Clamps not tight?

When the EB first came out, there were Forum comments about loose tube clamps coming out of Flat Rock. My EB convertible was one of the 4,000 kept separately for 6 weeks Feb-March. When it finally arrived in early April, I mentioned the clamps to my dealer at dealer prep. They found two clamps less than finger tight and another that needed to be tightened slightly further.
If you have an EB and never checked clamp tightness...you should check them!

 

[Legionofone]

Clamps would be a consistent issue though, no way to really have a on off issue.

 

[gobluemustang]

I had another issue the other night. The advance track service came on and said it was off. Also said hill assist was off. None of the drive or steering modes would work. The Turbo would not go higher than 11psi. I restarted the car 3 times and did not fix it. I continued driving and it went away on it's own.

I just took it into the dealer. They said that there was unbalanced airbag system error and they ordered a new module. They said the car shut off the advance track system and driving modes as a safety precaution because of the issue with the airbags. They said it would also limit the turbo. They think that is what caused the turbo issue previously too.

They said it was safe to drive and would do another diagnostic after replacing the air bag module. They said it looked like the errors had been cleared from my computer 200 miles ago by something. However, nobody has touched it but the dealer and I have not disconnected the battery. Also I had not driven 200 miles since the incident with everything shutting down.

 

[Bullitt]

Any update on your situation? I'm having a somewhat similar issue. I hadn't heard of the catalytic converter issue before. My issue isn't consistent and restarts do nothing for me though.

 

[gobluemustang]

Any update on your situation? I'm having a somewhat similar issue. I hadn't heard of the catalytic converter issue before. My issue isn't consistent and restarts do nothing for me though.

So far so good after the dealer replaced the air bag module. I am not fully convinced that is what caused the initial issue because the symptoms weren't exactly the same and the initial problem was intermittent.

 

[gobluemustang]

Still having issue.

So far so good after the dealer replaced the air bag module. I am not fully convinced that is what caused the initial issue because the symptoms weren't exactly the same and the initial problem was intermittent.

In January I had an issue with the advance track light came up with a fault. It lasted about a day and started working again. I took it in to the dealer again and the said it is a bad module and it would take a week to order. I did not hear from them for about 2 to 3 weeks we had some bad weather so I figured it probably just taking a little longer. I have been calling and checking every week and they have been giving me the run around. Saying they will call me back when the part comes in. Supposedly, they are gonna replace it tomorrow. However, really disappointed in Ford service.

The turbo issue started happening again too. Had to shut off the car and restart and worked fine. I did notice a flutter sound when letting off the accelerator and it would not go above 5psi.

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