Low boost & exhaust back pressure issues my story thus far - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 09-27-2009, 03:58 PM Thread Starter
Lor
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Low boost & exhaust back pressure issues my story thus far

Hello new person here also.
I recently purchased an 05' F350 FX4. It had 109k on it when i bought it. 5 days after leaving the dealership, the CEL came on. Took it back to the dealership knowing I bought it as is, just wanted to them put the code reader on it and tell me what was up.
First they informed me, of the exhuast back pressure sensor issue, and they'd need it over night.
By the next day it was seemingly a frayed wire that they taped up and fixed.
5 days later light on again. So I took it to the shop that does all the work on our propane bulk trucks. He told me it was turbo low boost and exhuast back pressure sensor.
So we ordered and installed the new sensor. Everything was fine for a whole 7 days and then light back on.
It was then suggested to clean the EGR which was done, and light on again. Next suggestion clean turbo.
So I took it to a different shop to price how much that might be. Well low and behold this shop tells me its the exhaust back pressure sensor. I'm like now way I just replaced that. He told me that tested it with the ohm meter or whatever its called, and apparently it not dropping back down to zero and therefore I guess not letting the valve close all the way.
I've been dealing with surging or now power issues occasionaly when leaving a stop sign and sometimes while cruising up a grade.
Any thoughts as to why this might be happening? Also if I go with an EGR delete kit, will this solve the problem also?
I Thank you in advance for your time and advice.
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post #2 of 16 Old 10-01-2009, 05:00 PM
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2003 6.0l F350 CC SB
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post #3 of 16 Old 08-18-2010, 07:52 PM
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I do not have the answer to that because I am having the exact same problem. I was just about to ask the same question.
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post #4 of 16 Old 08-18-2010, 07:57 PM
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Did you clean the tube the sensor is mounted in? As for the hesitation at stop signs, etc that can be caused by the reading of the EBP sensor not demanding the turbo to spool. The later pcm flashes disabled the EBP sensor and used inferred EBP by "estimating" backpressure.
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post #5 of 16 Old 08-18-2010, 07:58 PM
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does anyone know the location of the (EBS) sensor?
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post #6 of 16 Old 08-18-2010, 08:02 PM Thread Starter
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Quote:
Originally Posted by Ianmoog View Post
I do not have the answer to that because I am having the exact same problem. I was just about to ask the same question.
As you can see, never got to many responses from the locals here, never understood why, guess they don't take to the newb's to well.

But for the record, after I straight piped it the issue ceased.
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post #7 of 16 Old 08-18-2010, 08:05 PM
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Straight pipe shouldn't have made much difference. Exhaust Back Pressure Sensor - Ford Truck Enthusiasts Forums
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post #8 of 16 Old 08-18-2010, 08:05 PM
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This is my first diesel so I'm trying to figure these things out. I have been reading about cleaning the tube out that the sensor sits in. Can you just use carb cleaner for that?
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post #9 of 16 Old 08-18-2010, 08:06 PM
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Thanks for the advice.
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post #10 of 16 Old 08-18-2010, 08:41 PM
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has anyone ever had code p0299 come up, and if so what was the outcome?
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