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post #1 of 8 Old 04-08-2013, 06:28 PM Thread Starter
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turbo surging

I just recently noticed that when under light acceleration or cruising steady my turbo surges up and down by roughly 3-5psi. The whistle going up and down is very annoying with a straight exhaust. It has full boost/power when under heavy acceleration. Motor has roughly 125k on it. Any ideas???
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post #2 of 8 Old 04-09-2013, 01:54 AM
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surge

check ebp sensor and tube(pluged up)
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post #3 of 8 Old 04-09-2013, 04:46 AM
Fill it up again Dummy
 
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X2 ^^^^ on that


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post #4 of 8 Old 04-09-2013, 06:33 PM Thread Starter
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Well i unplugged the sensor and with it unplugged I noticed decreased turbo lag and the surge is gone. Also noticed that my turbo is much quieter with it unplugged. At idle there is no whistle/air sucking noise from the exhaust. I will try removing and cleaning the sensor and tube. Is this something that should be done periodically??? I daily drive the truck and do atleast a couple WOT runs everytime I drive it to keep carbon buildup at bay
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post #5 of 8 Old 04-11-2013, 07:58 AM Thread Starter
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Heres the verdict. I removed the ebp tube and sensor, both blocked solid with soot. Cleaned both out squeeky clean and its still doing the surging. Should I replace the sensor? Is there any way to test the sensor?
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post #6 of 8 Old 04-11-2013, 09:37 AM
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You could try to read it through a scanguage, there's alot of talk about what, if anything the EBP sensor does on 04 and later models. Some folks with later 04+ models have the same clogged sensors as you do with no adverse effects on how the engine runs. The EBP sensor was made "inferred" on 03's and some 04's with 06E17 programming from Ford. Also, check your rubber line going from the intake to the MAP sensor, these can crack and or come loose causing bad readings from the MAP Sensor.

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post #7 of 8 Old 04-11-2013, 10:11 AM Thread Starter
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After driving it more the problem seems to have gone away. I'm still going to replace the sensor, the rubber hose to the map sensor. And all the rubber connectors on the cold side of the turbo system
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post #8 of 8 Old 04-11-2013, 11:19 AM
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Sounds like you have a good plan of action.

2003 Excursion Eddie Bauer 6.0l 4x4 | 2004 Intake | Zoodad Mod | Upgraded HPOP Cover | ARP Studs | OEM Headgaskets | Updated Turbo Feed-Drain Tubes | EGR Delete | Coolant Filter | Altas 40 | MKM Street Tune | Banks 4" CAT Back | Muffler Delete | High Idle Mod | Blue Spring Update | 6.4 Banjos | CCV Mod | Glowshift Gauges (Boost, Oil Press, Coolant Press, EGT, Volts, Fuel Press) | Rotella ELC | Rotella T6 | V/B Springs | Torque App on ASUS 10" Tablet |
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