P0299 Code and Ruined Vacation From GFB Diverter Valve

[Grumpaw]

My Ranger, Truck, is basically stock with just the addition of a GFB DV T-9465. As you all know we pull a 7000 lb camper which does make Truck "work" when towing, but otherwise is a daily driver for "an old guy".
We left Monday for Maine from home in Virginia, with the trailer. Ran our usual 65 mph up I-81. Crossed over into Pa, and pulled into welcome center for a break, when the "wrench" light comes on.
Scan Gauge indicates it is a P0299 which I know has something to do with the turbo system. We make it up to exit 16 and go to Keystone Ford, luckily without it going into "limp" mode.
Out of town, stuck....DAMN !!!!!
But, tech comes out with laptop, plugs into Truck, and verifies P0299. Service tech tells me about campground near and we pull there, and luckily get a spot for as long as needed, drop and set camper up., and run Truck back to Ford.
Now it's Monday afternoon, but I am assured that being out of town and stuck, I will get priority. Under my extended warranty, they get me into a 2025 Ram pickup for as long as needed.
Tuesday tech runs a full diagnostic on Truck verifying a P0299 underboost code. Tech checks the entire system and after 2 hours finds something.....the aftermarket GFB DV is causing the problem. Apparently the spring supplied with the GFB is different from the OE, and under heavy boost like when towing a 7000 lb trailer, constantly on and off the throttle, going from high boost to letting off throttle causes the GFB DV to leak air, causing the underboost problem.
Tech said I was lucky to take care of it asap as it could have caused the turbo to go byebye !!! He believes that under normal driving, solo (not towing heavy trailer or load) it wouldn't have happened.
So, no OE valve in stock, they order one Tues afternoon. We're stuck, but at least have a place to stay and a rental.
Valve comes in on Thursday early afternoon, one hour to install and road test....they call me and I go to pick up Truck....expecting a bill even with the extended warranty cause an aftermarket part DID cause the problem.
Surprise.service mgr on work sheet did not indicate aftermarket part at all....just that the valve went bad. So, 4 days of rental, and all dealer labor/diagnostic/parts were NO CHARGE...covered by warranty.
This whole post is ment to be just information for those who have a DV and tow or load your truck.....this may/may not happen.....had no problem with the GFB DV when installed, but this was the first time since install that I had a problem, while under heavy loading.
This is NOT ment to indicate the GFB DV is defective or bad, just that when under heavy load it may not work to the trucks advantage. When I was driving solo/no load, it was great, and I could definitely feel a difference in throttle response.

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[Superspirit]

Thank you for posting this. I was just about to get me one the way everybody says they make em run better. But now(thanks to you) I know better. Jeez just saved me almost $200 bucks. And a vacation.

 

[IdahoRanger]

Great service received. Well done!

 

[Stevedbvik1]

My Ranger, Truck, is basically stock with just the addition of a GFB DV T-9465. As you all know we pull a 7000 lb camper which does make Truck "work" when towing, but otherwise is a daily driver for "an old guy".
We left Monday for Maine from home in Virginia, with the trailer. Ran our usual 65 mph up I-81. Crossed over into Pa, and pulled into welcome center for a break, when the "wrench" light comes on.
Scan Gauge indicates it is a P0299 which I know has something to do with the turbo system. We make it up to exit 16 and go to Keystone Ford, luckily without it going into "limp" mode.
Out of town, stuck....DAMN !!!!!
But, tech comes out with laptop, plugs into Truck, and verifies P0299. Service tech tells me about campground near and we pull there, and luckily get a spot for as long as needed, drop and set camper up., and run Truck back to Ford.
Now it's Monday afternoon, but I am assured that being out of town and stuck, I will get priority. Under my extended warranty, they get me into a 2025 Ram pickup for as long as needed.
Tuesday tech runs a full diagnostic on Truck verifying a P0299 underboost code. Tech checks the entire system and after 2 hours finds something.....the aftermarket GFB DV is causing the problem. Apparently the spring supplied with the GFB is different from the OE, and under heavy boost like when towing a 7000 lb trailer, constantly on and off the throttle, going from high boost to letting off throttle causes the GFB DV to leak air, causing the underboost problem.
Tech said I was lucky to take care of it asap as it could have caused the turbo to go byebye !!! He believes that under normal driving, solo (not towing heavy trailer or load) it wouldn't have happened.
So, no OE valve in stock, they order one Tues afternoon. We're stuck, but at least have a place to stay and a rental.
Valve comes in on Thursday early afternoon, one hour to install and road test....they call me and I go to pick up Truck....expecting a bill even with the extended warranty cause an aftermarket part DID cause the problem.
Surprise.service mgr on work sheet did not indicate aftermarket part at all....just that the valve went bad. So, 4 days of rental, and all dealer labor/diagnostic/parts were NO CHARGE...covered by warranty.
This whole post is ment to be just information for those who have a DV and tow or load your truck.....this may/may not happen.....had no problem with the GFB DV when installed, but this was the first time since install that I had a problem, while under heavy loading.
This is NOT ment to indicate the GFB DV is defective or bad, just that when under heavy load it may not work to the trucks advantage. When I was driving solo/no load, it was great, and I could definitely feel a difference in throttle response.

That’s great that they took care of you. Rare instance of a dealer doing you right. I’m guessing it would be prudent to keep the OE valve in the glove box for such instances if switching to an aftermarket valve and towing heavy.

 

[Chris M]

My Ranger, Truck, is basically stock with just the addition of a GFB DV T-9465. As you all know we pull a 7000 lb camper which does make Truck "work" when towing, but otherwise is a daily driver for "an old guy".
We left Monday for Maine from home in Virginia, with the trailer. Ran our usual 65 mph up I-81. Crossed over into Pa, and pulled into welcome center for a break, when the "wrench" light comes on.
Scan Gauge indicates it is a P0299 which I know has something to do with the turbo system. We make it up to exit 16 and go to Keystone Ford, luckily without it going into "limp" mode.
Out of town, stuck....DAMN !!!!!
But, tech comes out with laptop, plugs into Truck, and verifies P0299. Service tech tells me about campground near and we pull there, and luckily get a spot for as long as needed, drop and set camper up., and run Truck back to Ford.
Now it's Monday afternoon, but I am assured that being out of town and stuck, I will get priority. Under my extended warranty, they get me into a 2025 Ram pickup for as long as needed.
Tuesday tech runs a full diagnostic on Truck verifying a P0299 underboost code. Tech checks the entire system and after 2 hours finds something.....the aftermarket GFB DV is causing the problem. Apparently the spring supplied with the GFB is different from the OE, and under heavy boost like when towing a 7000 lb trailer, constantly on and off the throttle, going from high boost to letting off throttle causes the GFB DV to leak air, causing the underboost problem.
Tech said I was lucky to take care of it asap as it could have caused the turbo to go byebye !!! He believes that under normal driving, solo (not towing heavy trailer or load) it wouldn't have happened.
So, no OE valve in stock, they order one Tues afternoon. We're stuck, but at least have a place to stay and a rental.
Valve comes in on Thursday early afternoon, one hour to install and road test....they call me and I go to pick up Truck....expecting a bill even with the extended warranty cause an aftermarket part DID cause the problem.
Surprise.service mgr on work sheet did not indicate aftermarket part at all....just that the valve went bad. So, 4 days of rental, and all dealer labor/diagnostic/parts were NO CHARGE...covered by warranty.
This whole post is ment to be just information for those who have a DV and tow or load your truck.....this may/may not happen.....had no problem with the GFB DV when installed, but this was the first time since install that I had a problem, while under heavy loading.
This is NOT ment to indicate the GFB DV is defective or bad, just that when under heavy load it may not work to the trucks advantage. When I was driving solo/no load, it was great, and I could definitely feel a difference in throttle response.

What is that part you're talking about? What does it do for you?

 

[Josebd]

What is that part you're talking about? What does it do for you?

• TMS Technology for faster boost recovery on gearshift and during throttle modulation
• Improved boost holding ability
• Atmosphere venting for blow-off sound
• Retains ECU control
• Simple, direct bolt-on kits include everything you need to install
• Manufactured in Australia in accordance with ISO 9001

 

[Dereku]

Did you have both springs in or just the one? Curios how it could leak boost due to a stronger spring. I recently bought one and I work my truck like I still own a 1 ton some days. Now I am concerned.

Or do you just drag the brakes when towing? You know those tripod issues you told us about.

 

[OGMix376]

That’s great that they took care of you. Rare instance of a dealer doing you right. I’m guessing it would be prudent to keep the OE valve in the glove box for such instances if switching to an aftermarket valve and towing heavy.

Because of my own laziness that’s exactly where my OEM valve is currently ?..also I have a turbo smart bov.. didn’t have any issues pulling 3k, but that’s significantly less weight.. maybe it’s a heavyweights only issue?

 

[Grumpaw]

Because of my own laziness that’s exactly where my OEM valve is currently ?..also I have a turbo smart bov.. didn’t have any issues pulling 3k, but that’s significantly less weight.. maybe it’s a heavyweights only issue?

I did keep the OE valve, but thinking I would never need it....it's sitting on shelf in garage.
Besides, It wouldn't have helped me as I didn't know just what was causing the code.
As for what was explained to me, the engine was working hard, towing what I tow, in traffic, up/down grades, constantly changing the boost requirements, and the spring in the valve was not letting boost go up when needed.....engine finally got tired and threw a code.
I am NOT disparaging the GFB DV.....it worked flawlessly when Truck was running solo and I could feel it working as it was supposed too...great throttle response.
It may have been just me, my application, towing, conditions, or just a fluke. Tech checked every connection, checked turbo, checked all pipes, wiring, tests, ect. When he was testing the bov found the problem...I wasn't there, do not know what test was run on the bov, ect.
But new, OE valve was installed, and I had no problems towing home, ion even worse traffic.....

Additionally, this was trip # 17 towing the trailer over 4 years....some short trips and 5 trips of over 2000 miles, with no problems at all. This was the first since installing the GFB DV, and the only trip we ever had a problem, so I have to think it was the DV that caused the problem.

 

[Racket]

My Ranger, Truck, is basically stock with just the addition of a GFB DV T-9465.

Scan Gauge indicates it is a P0299 which I know has something to do with the turbo system.

Apparently the spring supplied with the GFB is different from the OE.

This whole post is ment to be just information for those who have a DV and tow or load your truck.....this may/may not happen.....had no problem with the GFB DV when installed, but this was the first time since install that I had a problem, while under heavy loading.
This is NOT ment to indicate the GFB DV is defective or bad, just that when under heavy load it may not work to the trucks advantage. When I was driving solo/no load, it was great, and I could definitely feel a difference in throttle response.

This is the 9465?

That's different than the one I was thinking of and have (9365). I use the supplied GFB spring (it's optional) so I suppose if I were to experience an issue I'd remove the spring.

I don't suppose this is the exact GFB unit many of us have?

I'm not a fan of 'blow off valve sound' anyway.

But good to be aware of possible issues.

 

[Grumpaw]

This is the 9465?

That's different than the one I was thinking of and have (9365). I use the supplied GFB spring (it's optional) so I suppose if I were to experience an issue I'd remove the spring.

I don't suppose this is the exact GFB unit many of us gave?

But good to be aware of possible issues.

Yeah, that's the one I have/installed. It's a well made/engineered part, but I just wonder if, when it was tested, they used it on a Ranger under heavy load ?
As posted, I had NO problems with it when daily driving/solo without the trailer.
Just relaying my experience as there were several other posts indicating code P0299, and this might be something to look at.....even a bad OE bov might cause the code/problem.

 

[NotBudule2]

Not sure if your aware ? but your Ranger started it's own thread a while back, maybe all this is just for attention? You didn't forget the birthday present did you ?

https://www.ranger5g.com/forum/threads/message-from-grumpaws-ranger.35637/

 

[Grumpaw]

Not sure if your aware ? but your Ranger started it's own thread a while back, maybe all this is just for attention? You didn't forget the birthday present did you ?

https://www.ranger5g.com/forum/threads/message-from-grumpaws-ranger.35637/

WHAT !!!!!! Truck started a thread of his own ???? Let me guess....he's looking for a birthday present or up-grade. I will definitely look into it....thanks for the heads up !!!

 

[OGMix376]

I did keep the OE valve, but thinking I would never need it....it's sitting on shelf in garage.
Besides, It wouldn't have helped me as I didn't know just what was causing the code.
As for what was explained to me, the engine was working hard, towing what I tow, in traffic, up/down grades, constantly changing the boost requirements, and the spring in the valve was not letting boost go up when needed.....engine finally got tired and threw a code.
I am NOT disparaging the GFB DV.....it worked flawlessly when Truck was running solo and I could feel it working as it was supposed too...great throttle response.
It may have been just me, my application, towing, conditions, or just a fluke. Tech checked every connection, checked turbo, checked all pipes, wiring, tests, ect. When he was testing the bov found the problem...I wasn't there, do not know what test was run on the bov, ect.
But new, OE valve was installed, and I had no problems towing home, ion even worse traffic.....

Additionally, this was trip # 17 towing the trailer over 4 years....some short trips and 5 trips of over 2000 miles, with no problems at all. This was the first since installing the GFB DV, and the only trip we ever had a problem, so I have to think it was the DV that caused the problem.

You explained it thoroughly and I understand, this type of thing maybe a rare situation which unfortunately showed up for you... personally I don’t fault the product or you for the situation, things happen. Pulling that kinda weight is incredible these little beasts can do it, however it comes at a cost. (even peak athletes pull muscles or get other injuries.)…if I recall correctly the GFB DV uses the ford solenoid thingy (the top part), so maybe that part was starting to fail. That means GFB or not it could’ve happened.
Really sucks that vacation time was interrupted. (Vacations to me are a mandatory part of life to rest, reset, and spend time with family.)

my reaction of laughing at keeping the oem BOV in the glove compartment..
Well it made me think “where did I put my OEM?” And I then realized that’s exactly where mine is currently… after i removed OEM and installed the new BOV.. I had just tossed it in the glove box and drove off… it’s been in there since ?

 

[dtech]

Sounds like the valve lived up to it's name.

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