turbo sounds like it has a blow off valve, and loss if power - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 03-17-2013, 02:26 AM Thread Starter
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turbo sounds like it has a blow off valve, and loss if power

Ok whenever I drive my truck in the cold between 25 and 40 mph as I start to give it throttle its acts as if whatever boost would be going to my motor is going thru a blow off valve. Sounds a little like whrn you put your hand over the intake on a lawn mower. Combined with no power. If I let off the throttle it runs fine. Ease back into it and a few mph later it will do it again. Until I reach around 50 mph and its gone. Ive also found if I let my truck idle for about an hour before driving on cold days it wont do it at all. Recently changed all filters and installed a new ebps. Any ideas? Also I took it to a diesel performance shop and he hooked it up and looked at the vitals and read the codes. Nothing came back, he suggested it was the map sensor.

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post #2 of 13 Old 03-17-2013, 03:17 AM
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turbo sounds like it has a blow off valve, and loss if power

Does it make a hissing sound? Sounds like what your describing is the EBPV


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post #3 of 13 Old 03-17-2013, 04:32 AM
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x2, ebpv . Normal under cold conditions.


2000 DRW CC 7.3
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post #4 of 13 Old 03-17-2013, 05:01 AM
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X3, sounds exactly like the EBPV closing when cold.

Lee

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post #5 of 13 Old 03-17-2013, 05:26 AM
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99-03 7.3L General Discussion - Ford Powerstroke Diesel Forum
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post #6 of 13 Old 03-17-2013, 05:38 AM Thread Starter
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Ok so ive already replaced the sensor, so is it doing what it is supposed to?

---David---

2000 Single Cab, 2x4, ZF-6
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post #7 of 13 Old 03-17-2013, 05:45 AM
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Yep, normal operation

Lee

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post #8 of 13 Old 03-17-2013, 07:24 AM
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That's not the only sensor the PCM uses to determine actuation of the EBPV.
Also, what is cold? Because if you're having to let your truck warm up for an HOUR then you might have something else to look at.



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post #9 of 13 Old 03-17-2013, 08:21 AM
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turbo sounds like it has a blow off valve, and loss if power

Quote:
Originally Posted by jesilvas View Post
That's not the only sensor the PCM uses to determine actuation of the EBPV.
Also, what is cold? Because if you're having to let your truck warm up for an HOUR then you might have something else to look at.
Agreed. I believe the PCM uses EOT and possibly ECT to run the EBPV. Someone correct me if I'm wrong. Wouldn't hurt to hook up to a scanner and check your readings on sensors. See if anything looks out of whack

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post #10 of 13 Old 03-17-2013, 12:10 PM
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Ok well, I wasnt gonna go into detail unless he asked! Haha. 1 hr of warmup is just too long.

Lee

2000 F250 PSD SCSB 4X4 418k miles straight pipe gauges 2" leveling kit 315/75r16's
6637 with custom intake pipe. TS Performance 6 position chip!
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