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Damon Intruder 99 F53 Chassis. P0720 P0715 but no sensors?

Robv27br
Explorer
Explorer
Hi everyone! like the subject. I have a 2000 Damon intruder Class A on a 99 F53 Chassis. 6.8V10 and 4R100 trans. getting these 2 codes:
P0720 Output speed sensor circuit (OSS)
P0725 Turbine input speed sensor circuit. (TSS)
OD light is blinking, MH shifts through all the gears but shifts rough!
if I don't clear the pending codes before SVC ENG Soon light comes on, MH will stall while running and most times it wont cut back on. It just cranks. Its driving me insane!!!
Now, here comes the interesting part! I do NOT have the OSS and TSS sensors on top of my trans. No plugs to the sensors. wiring harness never opened! everything look factory!! The VSS on top of the rear Pumpkin has been replaced with no luck!! I need help! don't know where to go here!! I have done the 7 PCM Grounds relocation according to an old TSB I found in the internet!!! I need to know what sends the OSS and TSS signals to the PCM since they are not there!!?? at the moment I don't know where else to go!! Need your help please!! It will be Greatly appreciated!! Thanks in Advance! Rob.
5 REPLIES 5

Robv27br
Explorer
Explorer
Hey Everyone! I appreciate all the input. I have figured out my problem. It was the PCM (COMPUTER). Somehow the previous owner replaced rhe PCM with a F350 Pcm that had the trans sensors, which my doesnt... so i have replaced rhe PCM With a new one and now the RV runs like a dream! All solved! Thanks to everyone who tried to help! Blessings!

fischer
Explorer
Explorer
I gues I should of asked if your engine has coil packs
2016 Winnebago 35B v10
2006 Jeep Liberty 4x4
Blue ox Tow Bar

fischer
Explorer
Explorer
I was trying to remember about your problem. What I Found was first relocate the grounds.
Then you probably have bad coil packs , the call them COP. I have read several times that changing out the coil packs fixes the prob . good luck
2016 Winnebago 35B v10
2006 Jeep Liberty 4x4
Blue ox Tow Bar

Stranger
Explorer
Explorer
When you did the PCM ground upgrade, how did you do it?

The reason I ask that is, I did the same on my 2000 F53 / 2001 Bounder and it runs VERY smooth.
Life is not a journey to the grave with the intention of arriving
safely in one pretty and well preserved piece, but to skid in broadside, thoroughly used up, worn out and defiantly shouting "Wow, what a ride!".
2012 Mesa Ridge 345RLS
2002 RAM 3500

Robv27br
Explorer
Explorer
Any input is greatly appreciated! Thanks all

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