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02 dodge 2500 47re wonít go into over drive

Old 11-08-2018, 02:03 PM
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02 dodge 2500 47re wonít go into over drive

Starting last week my 02 dodge 2500 would not go into over drive. Going around 45 it would hop in od and pop right back out but if I let out of the throttle completely it would go into od until I touched the throttle the it would go back into 3rd. I have replaced the od solenoid and the trans filter, fluid is bright red and no metal in pan. Also cleaned the output speed sensor. Took it to a shop to get a pressure test done and they told me everything checked out good but put a valve body in without informing me but this didnít fix the problem either. Canít find too many people who have had the same problem as me and need my truck for work.
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Old 11-09-2018, 09:52 AM
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Lots of people having this problem . I would clean all grounds , clean battery posts and terminals . Mine turned out to be 1 battery was 1 or 1.5 volts less than the other . I changed both batteries out and solved the problem .
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Old 11-09-2018, 12:04 PM
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Originally Posted by leeboy View Post
Lots of people having this problem . I would clean all grounds , clean battery posts and terminals . Mine turned out to be 1 battery was 1 or 1.5 volts less than the other . I changed both batteries out and solved the problem .
Both batteries were replaced last summer but I will check them, I replaced the trans relay and it shifted fine for about 10 miles and now itís doing the same thing again
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Old 11-09-2018, 06:46 PM
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You have a "command problem" not a "subordinate problem" - your transmission works as commanded, but the brain of the operations (the pcm) seems confused.

My first check would be for AC in the system- set your cheap digital volt meter to AC, measure on the battery while running. It should be less than 10 mV, the less the better.

If it's more, remove the 140A fuse for the alternator in the PDC and go for a short test drive. (only if your batteries are full)

If the problem is fixed- Alternator rebuild time- if not- tricky search for other causes...
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Old 11-09-2018, 07:09 PM
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Took out the alternator fuse and truck is still not going into OD. Replaced the trans relay with another one and it worked for about 5 miles and then it stopped going into od again. Canít get either relay to click over with dmm and they both read 73 ohms across the coil
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Old 11-09-2018, 07:11 PM
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I also have a edge CTS 2 monitor and the rpm range is all over the place and so is the gear position, donít matter if Iím going 5 mph or 45
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Old 11-10-2018, 03:56 AM
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OK, that info would have been useful before!

The trans shifts into OD and into lockup are controlled by the PCM based on throttle position, rpm and vehicle speed.

So if at least one of these values is fluctuating you get the problems you describe.
Do you have any codes stored?
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Old 11-10-2018, 08:44 AM
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I have codes p1388, p1899, p1389, p0753, p0622, and p1765. I think some of them are because I donít have a relay for the trans right now and Iím pretty sure I blew the asd relay trying it in the trans position. I also played with I rpm in park and it reads idle fine but if I rev it any the rpms on the edge jump everywhere but the dash in the truck is reading normal
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Old 11-10-2018, 11:28 AM
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OK, your codes look normal for playing around with the relays with the ignition on.

It would be interesting to see if the p0753 comes again after you got your relays sorted.

I have no idea about the rpm jumping on the edge display, but I would be very weary about this since the rpm are a major factor for your injection.
So maybe try it again with the edge completely removed?
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Old 11-10-2018, 12:55 PM
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Had a tech from BD diesel tell me the rpm jumps are due to the output shaft speed sensor? Gonna get my relays back together and get back with you.
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Old 11-10-2018, 04:22 PM
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Got all my relays back in and went ahead and got a output shaft speed sensor, didnít work by the way but looked for codes and no more codes other than the p1693.
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Old 11-10-2018, 04:59 PM
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Drove around and checked codes again and now have a p0320
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Old 11-11-2018, 03:17 AM
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OK, the crankshaft position sensor makes sense as for no reliable engine speed and bad shifting.

Did you remove the Edge for testing?
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Old 11-11-2018, 08:04 AM
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Didnít remove the edge because itís doesnt do anything tuning. All itís for is to read stuff like egt, trans temp and stuff like that. It plugs into the OBDII.
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Old 11-11-2018, 08:06 AM
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The edge monitor was unplugged tho when I drove it broke from the shop though but it still done the same things itís doing now.
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