Join Date: Sep 2008
Location: Spruce Grove
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6.4L No boost / low power / limp mode
Hey everyone, been a while since I've been on here.
I have 2008 F350 Powerstroke w/ 6spd manual.
I was driving the other day, had my 'check air filter' come on. This was due to blowing snow into my intake - normal problem hence the reason I had a spare filter to change on the road.
Before I pulled over to do this, I noticed when going up a hill that I had zero boost, not even a touch or movement out of the needle.
Pulled over immediately, took a look under the hood and found nothing weird - changed my air filter, felt the turbos for heat (were cold) and checked the flex elbows to/from intercooler all to be OK.
The truck entered into a limp mode and had the little wrench on my digital display and also a check engine light.
I have a DPF delete done with a simple pipe and the NADP module that just plugs into my OBDII slot. Up to this point has been trouble free.
I at the same time as above began getting "drive to clean exhaust filter" which indicates that the module may not have been working right, or just needed to be reset - so I reset it and it cleared that message.
Also, at this point with the truck in neutral it wouldn't allow me to rev more than 2000 rpm (which I believe was the limp mode kicking in).
After limping along for about 10 kilometers at 40km/h and not being able to rev more than 1100rpm while in gear and checking under the hood frequently I noticed that i began getting some boost - slowly but was able to get up to 10psi.
Drove it 40k to my destination like that. Then today I was playing around hoping I might find something and noticed that now I get zero boost again.
Any help would be greatly appreciated guys, any input at all.