Out of nowhere now I have turbo surge? - Ford Powerstroke Diesel Forum
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Old 12-15-2010, 03:14 PM
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Out of nowhere now I have turbo surge?

So how is this possible? Can boot leaks cause turbo surge?
I have a superchips tuner and while romping on it getting on the freeway the other day with the wife in the truck... It makes a loud 'chee...chee...cheee...' sound while its building boost, complete with waggling boost gauge needle. I have never had it that bad before - the only noise I get it a 'psstchhh' when I let off the skinny petal ever since I did the BHAF mod and never noticed a jumping needle.

What can cause this 'all of a sudden'? I can drive so it doesn't happen, but I was spoolin' up to pass someone today on a two lane road and it did it, when I really didn't expect it to.

What do you think ?

Scott
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Old 12-15-2010, 06:21 PM
dmd dmd is offline
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Could be the cold weather and the EBPV being closed a little....

I put in a ported housing because I couldnt tow without it surging, now I can hold
it to the floor towing with no problem (well maybe high EGT and boost...)
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Old 12-16-2010, 02:44 PM
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Good thoughts, I didn't consider the EBPV. Hmmm...
Well I did reflash the truck with a lesser tune (tow perf) and it stopped doing it. I put it back to the mileage XS tune and it does it way less... but I can still 'get it to do it' if I try.

thanks -
I guess I will monitor for a bit... strange!!

Scott
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Old 12-16-2010, 08:46 PM
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I agree with the colder temps thought. Remember that colder air is also more dense so that could cause it too.
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