Startup surge
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Freshman User
Joined: Jun 2012
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From: WPB
Startup surge
I have a 99 f350 and I've been noticing when I start up the truck & let it sit there, after a short time it will start to surge, almost like a cyclic hiss out the exhaust. One way to stop it is to just tap the brake pedal. if I don't put it in drive and go but let it idle in park, it will come back but eventually stops. I live in Florida so it's not 'cold' out.
Elder User
Joined: Dec 2012
Posts: 841
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From: Monroe, MI
Your EBP sensor might be going bad, telling the valve to close when it isnt supposed to.
last summer mine kept closing while i was driving, replaced the sensor and it has worked like its supposed to ever since.
last summer mine kept closing while i was driving, replaced the sensor and it has worked like its supposed to ever since.
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Freshman User
Joined: Jun 2012
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From: WPB
I was hoping that was it, I saw the video online of the tube coming off the exhaust manifold going to that sensor sometimes gets clogged with soot so I had replaced that but obviously that didn't fix it.
Elder User
Joined: Dec 2012
Posts: 841
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From: Monroe, MI
I did my tube with the sensor still works great and I got about 2.5 mpg better than I did when I had the old tube and sensor. So I would put my money on your sensor being bad. I think its like $87 for a new sensor at riffraff
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Awitte58
1994.5 - 1997 7.3L Power Stroke Diesel
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May 23, 2011 09:25 PM
