No Boost Ecoboost... Need help!

V

Victorous Secret

New member
Reaching out to the community to help figure this out. Thank you in advance for all the expertise and advise.

The vehicle is a 2011 Ford Taurus SHO PP with the following mods
3BAR MAP
MD CAI
Catted DPs
2.5" Exhaust
stage 2 WM kit
Custom WM tune

So after a 3rd gear pull on the highway I got off and went to accelerate and noticed something was wrong. The car was lacking power and glanced at the boost gauge and nothing. I am now not able to build any kind of boost. when driving I can hear the turbos working but they sound not as efficient or like clogged, a slight whining sound rather than the spooling sound. Before I was able to build enough boost in neutral to make the BOVs open up, now nothing.

What I have done so far is power-vac the CAC clean, cleaned the MAP sensor, inspected and moved the front BOV to the back, with no luck. I loaded a stock tune and installed the stock 2 BAR MAP. I even replaced the boost control solenoid on the intake manifold since it seamed like a possible culprit and was fairly cheap. Still no luck. I have looked and listened for vacuum/boost leaks by putting it in drive with parking brake and brake and having someone give it gas and didn't find any. Still kinda difficult to hear much unless it is a rather large leak.

What are the chances the turbocharger wastegates have failed? and if one failed would that create low boost or no boost? What is the easiest way to test, or is there a single point of failure for the two wastgates? A recent data log shows them at 0% the majority of the log and only 80-100% for a few seconds. Anyway easy way to dislodge if they are stuck?

What other components would you suggest I look at?

Thanks again

 
No codes at all?  Post a couple of logs here so it's easier to see what the car is doing.  But yes, wastegates do fail, usually a broken seal, the orange one IIRC.  But first, take off the engine cover and check the hoses atop the intake manifold.  They are not all clamped from the factory, and one or more may have blown off.  Also check the turbo piping for cracks/leaks at the clamp area.  Usually happens on the underside of the hoses, where you would not see them at a cursory glance.
 
No codes, I have placed zip ties on all the hoses coming in and out if the boost control selonoid on the manifold.

I have not checked the turbo piping but did listen for leaks. I will do that mannana as well as follow the wastegate vacuum lines to make sure the are connected and in good shape.

I will provide log in the morning as well. thanks

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Sounds like a failure of the diaphragm on either one, or even both of, the factory/OEM BOV's.

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bpd1151 said:
Sounds like a failure of the diaphragm on either one, or even both of, the factory/OEM BOV's.

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Click to expand...

But something is telling the boost solenoid to drop to 0. So I suspected a bad boost solenoid but he replaced that...If the wastegate duty was normal I would think mechanical problem...Now I'm thinking electronic of some sort. And stock tune also.
 
X2- agree with SHOdded statement above and check the rear charge pipe to turbo for any visible oil in and around the pipe or possibly split or loose.
I would not rule out the front hose from CAC to Front turbo.
The whining noise has me a bit concerned.
How many miles? .Z
 
71k, the rear charge pipe did have some caking of oil and dirt not very bad. I am going to take a closer look at all the piping today, actually remove and inspect.

I have also provided the log AJP has taken a look and suggests the boost solenoid which I replaced is not telling the wastagates to actuate. I agree with him and think it is an electrical problem but without any codes it difficult to begin isolating the fault.

Either way I will get to inspecting the piping after I get the kids to school, this issue needs to get fixed before I go back to work next week. thanks again all.


 
Sounds similar to what happened to my SHO at its last track day. I never got it fixed cause it got totalled shortly there after. This is the thread (https://www.ecoboostperformanceforum.com/index.php/topic,7546.msg114499.html#msg114499). I tried changing that solenoid to no avail. I swapped to stock charge pipes, and back to my EPP pipes. Checked every line I could for a boost leak and never found one. No codes on my vehicle as well, and I could peak my boost out to ~10psi for 2ish seconds at best, at which point it would drop to 4 and go into limp mode essentially. I was going to change the wastegates/do a turbo swap as it seemed the only likely conclusion from what I was seeing, but never got to that point. Good luck.
 
Noooooo! Not what I wanted to hear derf! May be time for a billet  wheel and tial wastgates from EPP.  Hopefully they have a core in Stock. I leave town for about a month at the end of the month and don't want to leave her at home sick :(

Derf, by the way did you ever run a FORSCAN or any other device to possibly isolate the problem?
 
Sounds exactly like the issue I'm having at the moment as well... :|

Will be following this. My car is set to goto the dealership on the 22nd
 
jbeez said:
Sounds exactly like the issue I'm having at the moment as well... :|

Will be following this. My car is set to goto the dealership on the 22nd
Click to expand...

No they are different...jbeez your car is leaking boost....victorious' car is telling the wastegate to stay completely open by way of dropping wastegate duty to 0% which is why i thought maybe the boost solenoid was bad but he changed that. I wonder if the ecu is bad?. Would be rare....even the stock tune does it...very strange
 
So far I have checked all the hoses no leaks and actuated the front turbo wastegate selonoid arm manually. Going under the car to get the rear turbo. I also verified the EBC the Ford House provided was the exact same part number not just a look alike.

I am with AJP at this point, I think it's something electronic but without a code it's hard to isolate.

You all think it would hurt to disconnect the battery and spray connectors with electronic spray cleaner?

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An I found this. My MDesign CAI inlet was broken least of my worries but thought I would share, MDesign will likely replace for free. Not sure how that happened.
437ea2319149a8615da8d706e5802336.jpg


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Victorious Secret said:
An I found this. My MDesign CAI inlet was broken least of my worries but thought I would share, MDesign will likely replace for free. Not sure how that happened.
437ea2319149a8615da8d706e5802336.jpg


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Click to expand...
What's that loose 6mm hose behind the intake?
Due post some pics of he engine bay,thanks. Z
 
Either the meth pump or boost gauge boost reference hose. Disconnect and plugged the refrence coming off the EBC take sure the wasn't leaks between the two.

Here they are plugged back in.
d63a2eac7f8b4c0e3b40c4faac8ff511.jpg


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Victorious Secret said:
Noooooo! Not what I wanted to hear derf! May be time for a billet  wheel and tial wastgates from EPP.  Hopefully they have a core in Stock. I leave town for about a month at the end of the month and don't want to leave her at home sick :(

Derf, by the way did you ever run a FORSCAN or any other device to possibly isolate the problem?
Click to expand...

I never ran anything with forscan, just used my X4 to check for codes, and livelink to try and get logs. my issue was present with the stock tune and my AJP tune as well. In my case, I went to the track, after having some revisions done to the tune, and a few extra mods, hoping for a low 12's or magical 11's pass. previous best was a 12.87. So I expected atleast that. Ran a 12.9 on my first pass, and after that I could not get out of the high 13's/Low 14's(stock like performance). I noticed the boost gauge didnt seem to be at my commanded boost during one pass (commanded was between 15 and 16psi and it looked to be ~5PSI). Sent Brad the logs and went from there. I was kind of looking for an excuse to do upgraded turbos so the conclusion of either a turbo issue or wastegates didnt bother me too much, as it would have been a good excuse. I did notice my CAI was a bit loose during troubleshooting but that was really it. After a fresh cal download I could nail it and get to my peak boost command for a split second, at which point boost dropped off and it went into a more underboost like condition. I did talk to a local tuner/shop and they offered to diagnose but sadly I had to part ways with the SHO before that. It should be noted that in my case, I believe one of the turbos got damaged somehow, and the other was trying to work overtime to hit my commanded boost. My next step was going to be returning to stock entirely, and taking it  in to a dealership to try and get it fixed under warranty, and if it turned out to be turbos/wastegates then upgrade after. Note that my car had less than 16k on it at the time.
 
Victorious Secret said:
You all think it would hurt to disconnect the battery and spray connectors with electronic spray cleaner?
Click to expand...
Certainly can't hurt at this point.  The "bricking" of a PCM usually happens when flashing, and that is a pretty massive event.  Maybe it IS just dirt or water in the connection ...
 
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