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Old Mar 26, 2008 | 02:33 PM
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Question Surge?

My dad just got a 2000 f-350 diesel. he said in the morn when its warming up goin down the road it will act like its got more boost. he said theres a noise towards te turbo, then more power then it slows back down. any ideas on what this might be?
 
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Old Mar 26, 2008 | 02:38 PM
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Sounds like he may be feeling the EBPV opening and closing. What is the temp where you are?
 
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Old Mar 26, 2008 | 02:55 PM
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Description sounds a little ackward but I 2nd the EBPV comment....that is probably the sound he's hearing..but it definitely doesn't give more boost...it causes less.
 
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Old Mar 26, 2008 | 06:29 PM
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its about 30 in the morn. and he said the truck acts like it has more power then lets back off. hes not giving it more throttle when it hapens either
 
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Old Mar 26, 2008 | 06:46 PM
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Originally Posted by JethroF250
its about 30 in the morn. and he said the truck acts like it has more power then lets back off. hes not giving it more throttle when it hapens either
Ah, this is not the EBPV. If he is crusing down the interstate does it fluctuate a couple MPHs when it does this without his input on the accelerator?

Im thinking throttle position sensor.
 
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Old Mar 26, 2008 | 06:48 PM
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exactly he keeps steady throttle and it starts gainin power for like 30 sec and then stops
 
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Old Mar 26, 2008 | 06:50 PM
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But why only in the morning when cold and only for 30 minutes?
 
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Old Mar 26, 2008 | 06:57 PM
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thats what i'm confused about because if it were the ebpv then the truck would lose power not gain ???
 
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Old Mar 26, 2008 | 07:00 PM
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It would gain as it opened the lose as it closed. This is only if he holds a steady amount of pressure on the pedal. Any accel. would cause the EBPV to open. It would also need to be cold where he is driving.
 
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Old Mar 26, 2008 | 07:03 PM
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ok so its probly just the way the truck warms up then. cause i know with my 95 7.3 its a dog when the valve is shut but mine doesn't gain or act any different like what he was tellin me his does
 
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Old Mar 26, 2008 | 07:34 PM
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it could be just the trucks way of warming up? i cant imagine 30 seconds being normal though, i was thinking more or less 2 or 3 seconds
 
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Old Mar 26, 2008 | 07:40 PM
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Just wondering how old is the oil and what weight? Maybe too thick when warm?
 
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Old Mar 26, 2008 | 07:53 PM
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For whatever reason, my throttle pedal position sensor (both of the bad ones) was much worse when cold. You can replace just the sensor and not the whole pedal assembly.
 
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Old Mar 26, 2008 | 08:04 PM
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Originally Posted by joegebff
For whatever reason, my throttle pedal position sensor (both of the bad ones) was much worse when cold. You can replace just the sensor and not the whole pedal assembly.

i seem to notice this trend in temperature also
 
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Old Mar 26, 2008 | 08:09 PM
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It's the EBPV. To confirm, pull the electrical connector and take off one morning -- see if it acts "normal". It won't hurt anything, a lot of guys gut the EBPV completely.
 
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