OK, I know it's not really the Rancho 9000 adjustable shocks that threw the engine code, Just Perfect Timing I'm sure.

Drove the truck last evening to go pick up a new man toy. It felt as though the truck was running a little different with the feel of strange shift points. When I stopped at the gate to close it I jumped out of the truck and thought that it sounded different, more quite and a higher idle. So when I climbed back in I took a look at the RPMs and everything looked right.

So this morning I crawl under the truck and change out the two rear shocks to the Rancho 9000. Jump in and back the truck out of the garage to do the front shocks out side in hope of finding a little breeze for comfort. I crank the steering wheel to one side and turn off the truck locking the wheel for easier access to the driver side front shock and go to work replacing it.

I jump back in the truck start it up to crank the steering wheel and lock it in place and notice that I had a "Check Engine" light on.

Went ahead and replaced the passenger side shock, put up my tools and crap. Then restarted the truck and the check engine light was still on. So I reached down and punched a few buttons on my installed ScanGaugeII and it shows one stored code. Click another button and it reads the
"Code P242B".

If I am not mistaken, isn't that an EGT Senor? I sure hope not, I had myself convinced that my truck was never going to experience any of the dreaded EGT sensor problems that have plagued the 6.7 engine. I just knew my powertrain would be perfect and exempt from this issue.

I only have around 24K on the odometer and well with in warranty. I guess it will head to the dealership in the morning. Hummmm, should I have it towed? The tow should be covered under warranty......right?

And again, yes I was in jest about the Rancho shocks being root cause of the issue. I am a little ticked off that I can't take the truck for a test drive and check out ride difference.

I compressed my old shocks, and I'm still waiting for the two front shocks to expand out from being compressed all the way. But then Sundays are a day for being lazy, I guess they are.

 

If the truck is running, Just drive into the dealer.

 

I was being factitious, on the tow to the dealership. But, I do think I will have my son come by in the morning and leave me his demo and he can take it in to the service dept. Figure what the heck, he's the GSM so he's headed that direction anyway.

 

I hate to continue with this but testing a shocks rebound is not a good way to test these shocks. I had a pair of Rancho 9000's and with less than a year on them my truck was bouncing all over the place. I did the push the truck up a down and the truck would bounce up and down several times before stabilizing so I knew they were shot. I put the factory shocks back on and the ride was 100% better.


Good luck with the CEL

 

I changed to the Rancho 9000 because the ride of my OEM Rancho FX4 shocks were/are shot. Worse ride I have ever experienced with a Superduty. I had to run to the other side of the Dallas area the other day and it was more than apparent that the shocks were much worse than I had though. Most of my driving is local or highway which is mostly not bad road surfaces. But, holy moly city interstate driving at speed was a killer, the truck was every where.
I have run Bilsteins in the past on a few Superduty trucks and can't say I was overly impressed with them, so this time I am going Rancho adjustable. With time, time and miles will tell. After 6 hours of having compressed the OEM shocks three of them have opened, one is still fully compressed.

 

Still running the oem shocks. I will continue to do so till they get a bad ride.


Right now I have the lumber wagon ride, just like it should be.


I ran my 08 6.4 for 5 years before trade in with all the original EGT sensors BTW.

 

The oem shocks are not gas charged. They aren't going to rebound, they're made to remain neutral.

Still, I know they are terribly weak and mine will get replaced soon as well. I much prefer a good stiff charged shock. In my opinion a stiff charged shock is more prepared to handle the massive unsprung weight of the wheels/axles.

 

I had a Rancho 6" kit on my Avalanche and it used the 9000's for the front struts, they lasted about a yr before they were done. Rancho sent new ones under warranty but it was my labor to break them down and replace them.

 

Took the truck in this morning and picked it up this afternoon which gave me the opportunity to experience the Rancho 9000 shock upgrade. It is different, a much more firm ride that you can feel at each corner of the truck independently and as a whole. The ride this morning felt a little soft but seemed to firm up with a few miles added to them. The ride home is where the firmness settled in. It will be fun trying to find the right settings on the four corners to match what my cheeks prefer in a ride experience.....LOL
Right now I am at 5 in the rear and 6 on the front. I may back off on setting on each corner to see where I am when running empty. Well as empty as a loaded across the bed tool box and 75 gallons of fuel calculates out to.

 

So what was the issue with the truck, just the sensor?

 

Yea, just the #3 EGT sensor. Ford replaced it on their dime, and the truck is running perfectly find. Dealer loaned me a 2015 Mustang to drive. Never thought the day would come that I choose a Superduty truck over a new Mustang. But, I sure have a new appreciation for my F350.