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Old 04-08-2013, 06:28 PM
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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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Old 04-09-2013, 01:54 AM
huj huj is offline
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surge

check ebp sensor and tube(pluged up)
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Old 04-09-2013, 04:46 AM
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X2 ^^^^ on that
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Old 04-09-2013, 06:33 PM
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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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Old 04-11-2013, 07:58 AM
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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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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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Old 04-11-2013, 10:11 AM
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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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Old 04-11-2013, 11:19 AM
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Sounds like you have a good plan of action.
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