Let me start by saying that I have the Gryphon and am waiting on my custom tunes. I have an 05 f150 with the 4.6. I was driving today and my truck shifted really hard twice. I took it back out later to see if I could pinpoint what was wrong with it and it began to completely drive funny. It started to rev up really high and would not drive any faster. I pulled over and in the small box where it shows the miles on the truck, Trans Fault came up and the codes P0720 (OSS Sensor circuit fault), P0722 (Output shaft speed sensor No signal) and P2106 (Throttle Actuator Control System Forced Limited Power) came up on my Gryphon screen as well. When I would put my truck in drive it would rev up really high for about 10 seconds before it would go anywhere and then once it would move it wouldn't go any faster than 20-30 MPH. I was only about 1 mile from home so I went on home very slowly.

I've looked all over this message board, along with about 30 different websites google directed me to and I'm thinking that it's my OSS Sensor. My dad owns a shop/tire store that I've worked at for about 4 years now when I can find the time to with school so luckily access to tools and parts won't be a problem. I brought our rollback home today and loaded my truck up and will have a our head mechanic check it out first thing in the AM. From everything that I've read the OSS Sensor going bad could be what's causing all of the problems as well as causing my truck to throw the P2106 code. I'm thinking Trans Fault came up because the sensor is on the side of the transmission? At least that's what I'm hoping. Anyone gone through this before or have any ideas/tips?

 

Might want to check the electronic throttle body also.

 

Thanks for the tip! That will be what I look into second. After some extensive research, I'm pretty sure the OSS Sensor is bad. I called our parts dealer today and they said they could have me a new one first thing in the AM for $25 so I told 'em to send it on. I'll have our head mechanic install it in the morning and if that doesn't work I'll have him check the throttle body to make sure that it's working as it should. I'll be sure to let everyone know if this fixes the problem so that maybe this will help anyone else who goes through this.

 

If the sensor doesn't take care of it you may need to pull the trany valve and look for damage.

 

Well, unfortunately the sensor didn't fix it and I think I'm borderline depressed now haha. I put the new one on and it ran good for about 30 yards then I began to hear a whining noise that sounds similar to a bad power steering pump. I put it in park and hopped out and crawled underneath and based on where the sound is coming from it's not the power steering pump making the noise (Which i didn't think it was). Sounded almost like it was coming from the front of the tranny. I hopped back in and was going to put it in the air on one of our lifts with it running to try and pinpoint the noise and the problem started all over again. It won't hardly move when in drive, 1, 2, reverse, or 4wd. It will move but not much or very fast. Our mechanic had to leave early today for an emergency and did not get to look at it. I'm going to have him check it out first thing in the morning.

 

Sounds like a rebo exchange is in the near answer.

 

What's a rebo exchange? Sorry, I don't know a whole lot about transmissions. I talked to a guy at Year One today and he said the whining sound made it sounds almost like it could be the transmission pump. At this point I'm more confused on what to check than ever. Also, no new lights have come on. The "Trans Fault" light is the only thing transmission related to come up. None of the codes were related to the tranny unless you count the one for the OSS sensor which i replaced.

 

Exchanged rebuilt transmission, or simply have it rebuilt. Have it's main line pressure tested.

 

Great news! The truck's running great! I stayed a little late last night and put my truck up in the air and dropped the tranny pan. After I got it dropped I decided to deal with it today. When i went in this morning, I looked at the magnet and it had a good deal of stuff on it and there was also a bit of very fine particles mixed in with the litle bit of remaining fluid in the pan.I looked at the filter and the inside was nearly black ! I decided to start cheap and called in a new filter kit and fluid. Put the filter in, Put the pan back on with the new gasket and bolted it back up. Let the truck down and got her filled up with fluid. Held my foot on the brake and went down through the gears, then back up, then down again, then back up one last time. Checked the fluid again and topped it off. Took it for a test drive and she ran like a charm ! Im still trying to figure out why the filter was so gunked up though. We use some of the BG products at our shop and when i dropped the pan about 7,500 miles ago I used a 2-can pack of tranny conditioner. My only guess is that stuff cleaned it really well and all the debris that it cleaned is what clogged up the filter. Any thoughts?

 

Awesome, maybe you got a couple drains and trans filter changes left in the old gear changer after all. I would go with more wear to the trans with the diluted trany oil. Burning is what happens to the lubricant, as the clutches need lubrication to cool. Take away oil, add too much additive and less lubrication takes place. I know there are all kinds of bragging rights out there, but oil and filter changes are best for the trans.

 

NEVER use chemicals in a transmission, just transmission fluid! Use your fancy BG machine as an exchange machine, not a flush machine, and keep their chemicals out of it.

 

Will do glc. Their fuel injection flush kit works great and we sell a lot of it so i figured their transmission kit would be great as well. Of course I was wrong. I was thinking about dropping the pan again in about two weeks or so just to be sure I got all that crap out since some of the fluid was still in the torque converter when I dropped the pan this time. Sound like a good idea?

 

Hook up the BG transmission machine and fill the reservoir with ATF. Don't use the machine's power, start the engine and let the tranny pump do the work pumping the old fluid out and drawing the new fluid in.

 

I'll do that Monday morning when I get to the shop. Thanks for the help.