OD light blinking, Hard shift, Jerky in reverse.....VSS Sensor???
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From: Manchester, NJ
OD light blinking, Hard shift, Jerky in reverse.....VSS Sensor???
Well the title says it. Yesterday i went through a kind of big pile of snow trying to make a turn in a parking lot. After that i noticed the OD light blinking but the truck ran fine and the light goes off a couple minutes later. 2 hours later, i go to get pizza and the light starts blinking again sporatically and the shifts are getting harder to the point where my girl was asking me whats wrong with the truck, why is it doing that. Anyway, wake up this morning to go to work and as i go to back in to my spot, i put it in reverse and hit the gas, the truck hesitates, then will go a little bit, then keep hesitating and so on..... Does this sound like the VSS sensor, or something more serious like the TC or something??? I dont have anyway to read codes, but going to try and get them read at a buddies shop if he has the right scanner.
Hotshot
Joined: Feb 2007
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From: Sterling Heights,Mi
It is not the VSS, you might want to try and crawl under and blast the electrical plug with some WD-40, check to make sure it hasnt come loose. This is the only thing that I can think of other then a hole in the trans pan and no oil..
Hotshot
Joined: Feb 2007
Posts: 10,499
Likes: 10
From: Sterling Heights,Mi
I might be wrong Matt, but if I Recall, the VSS will cause the blinking, it may be intermittent, but you added the shifting was getting harder, and I dont recall that as part of the issues.
So, I am going to shut up and pay attention, I dont want to send you down the wrong road here, but again, wouldn't hurt to hit the VSS with WD-40 (the plug).
So, I am going to shut up and pay attention, I dont want to send you down the wrong road here, but again, wouldn't hurt to hit the VSS with WD-40 (the plug).
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From: Manchester, NJ
Na, not saying you were wrong Pat, and believe me, i more then appreciate any input you have. I just spent the better part of the morning looking at threads about this, and i saw a couple threads on it, one including Brendan, saying that the were experiencing hard shifts and once replaced the VSS the shifts smoothed out.
Here is the thread:
https://www.ford-trucks.com/forums/5...s-the-vss.html
Here is the thread:
https://www.ford-trucks.com/forums/5...s-the-vss.html
Thread Starter
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Posting Guru
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From: Manchester, NJ
Now on the way home, no light, shifted a little smoother, and went in reverse fine, no problems at all. What is going on here....?
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Lead Driver
Joined: Jun 2003
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From: Damon (South East Texas)
While the VSS on the diff may affect shifting, I don't think it would the 'going into reverse' part of the problem. I am leaning toward a possible problem with DTR (digital trans range) sensor on the trans gear shift lever. My symptom chart shows it can cause harsher shifting if misaligned or damaged (affects EPC...shift pressure). I'm not 100% sure, but it could also affect the engagement of reverse because the PCM uses the signal from this sensor to 'read' gear position.
Checking for the codes would be the place to start in where to look for the problem. If you can get them read, we can figure this out.
Checking for the codes would be the place to start in where to look for the problem. If you can get them read, we can figure this out.
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Joined: Nov 2007
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From: Manchester, NJ
Yeah thats what im trying to do, i just have no way to get them read right now. The dealer wants $104.97 just to pull the codes, sorry im not paying that, ya know. So i dont know what to do yet.
Lead Driver
Joined: Jun 2003
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From: Damon (South East Texas)
Did a little reading. There is no electrical concern shown for a delayed reverse engagement. It is possible that the shift linkage could have gotten knocked slightly out of adjusment. This could cause the applying of reverse to be affected and also throw the DTR sensor out of synch with the valve body. Let us know what codes come up this evening. Hope they point to something minor.
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
Or you could spend some money and find out WHY the OD light is flashing. Then you could fix what's wrong and end up spending less money. Your call.
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From: Manchester, NJ
Start buying parts. I'd guess the DTR, VSS, OSS, TSS to start. That should have you well over $100. If those don't fix it we can try other things.
Or you could spend some money and find out WHY the OD light is flashing. Then you could fix what's wrong and end up spending less money. Your call.
Or you could spend some money and find out WHY the OD light is flashing. Then you could fix what's wrong and end up spending less money. Your call.
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