Turbo lag or growing problem?
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New User
Joined: Dec 2006
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Turbo lag or growing problem?
I have a 2006 f350 crew. It seems that I'm noticing the turbo taking longer to spool up than when the truck was new. I only have 16k miles on the truck. Its most noticable from a dead stop pulling out into traffic. I know that turbo lag is common and not necesarily a problem but its to the point that I'm holding my foot on the brake and pressing the accelerator to spool up the turbo in order to pull out into traffic. What's the normal turbo lag time for the 6.0? Is there a standard benchmark that the dealer will check it against if I bring it in for service?
Thanks for you thoughts,
Jeremy.
Thanks for you thoughts,
Jeremy.
Junior User
Joined: Jan 2007
Posts: 95
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I believe i was at full throttle doing this.
It takes less then a second to hit 10 psi of boost. My rpms will hit 2000 and the boost hits 10psi. Then the truck starts taking off. Once second does feel forever. And my truck is so heavy, I try not to chance anything by dead stop pull into traffic.
Let me know if this helps.
It takes less then a second to hit 10 psi of boost. My rpms will hit 2000 and the boost hits 10psi. Then the truck starts taking off. Once second does feel forever. And my truck is so heavy, I try not to chance anything by dead stop pull into traffic.
Let me know if this helps.
Posting Guru
Joined: Mar 2006
Posts: 1,798
Likes: 2
From: SoCal, SD CO. East
My turbo lag was significantly reduced after my MAP sensor was replaced. My MPG's went up a lot after the MAP, too. It maybe just a fluke, but helped mine. All of the sensors in the system work to provide information to the PCM... It may have been the weak-link.
Senior User
Joined: Feb 2005
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Had this on one of mine, replaced 4 injectors and it was like new. Within a month it started doing it again, now it will barely get out of it's own way. Time to 2000-2200 RPM's is at least 5 seconds, sometimes up to 10. My other 2 are usually about 2 seconds max. It's had a new turbo and new EGR, despite the EGR being unplugged.
The dump box is being repainted right now. As soon as they're finished, it's going to a dealer and I am telling them the same thing as last time, "I don't want it back until it's fixed". Good thing I have some 7.3's that can be used in the mean time. At least only this one has been a royal pain in my butt and the other 2 have only had minor issues--STC fittings on both.
The dump box is being repainted right now. As soon as they're finished, it's going to a dealer and I am telling them the same thing as last time, "I don't want it back until it's fixed". Good thing I have some 7.3's that can be used in the mean time. At least only this one has been a royal pain in my butt and the other 2 have only had minor issues--STC fittings on both.
Junior User
Joined: Feb 2006
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Providing everything is ok mechanically, I have found that if you so to speak roll into the throttle instead of wacking it to the floor it will accelerate much quicker...
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Cargo Master
Joined: May 2002
Posts: 3,271
Likes: 229
From: Gulf Coast, FL
Try the following, PLEASE do this with regard to others around you. Find a parking lot or simular area. Bring the truck to a full stop, keeping the brake on apply the pedal and bring the RPMs up to 1500. Watch the boost level and take mental notes of the PSI reading. The truck should build boost and increase the PSI as you increase RPMs. I find around 2000 RPMs the rear end breaks loose.
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Cargo Master
Joined: May 2002
Posts: 3,271
Likes: 229
From: Gulf Coast, FL
I'll double check to see for sure, I'd guess close to 15+PSI. I've held 10+/-PSI @ 1500 RPM waiting for the light. From what I have experienced while driving it seems as 10 PSI is the magic number to overcome the turbo lag.
Tuned
Joined: Jul 2006
Posts: 262
Likes: 2
Ok, my truck wouldn't burn out either but I am having turbo troubles...
If I blip the gas right before I shut the truck off I can hear the turbo spool down and it sounds like a box of gravel.... I guess it could be the engine fan but it produces a hollow grinding sound that I think is the turbo.
If I blip the gas right before I shut the truck off I can hear the turbo spool down and it sounds like a box of gravel.... I guess it could be the engine fan but it produces a hollow grinding sound that I think is the turbo.
Cargo Master
Joined: May 2002
Posts: 3,271
Likes: 229
From: Gulf Coast, FL
I have some 35's on now and couldn't get it to turn the wheels. I was pushing 7-10 PSI @ 1500 rpms. Once I got to 15 PSI pushing 2000rpms the truck was ready to break loose but the big tires were holding it back.
I can hear mine spool down as well on shutdown, but if it's a grinding noise it doesn't sound good. Remember the DP is a big metal tube and may cause the noise to sound worse.
I can hear mine spool down as well on shutdown, but if it's a grinding noise it doesn't sound good. Remember the DP is a big metal tube and may cause the noise to sound worse.
