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Re: Car turns over (starts) only in N, not Park
[Re: Sniper]
#3187592
10/30/23 10:54 AM
10/30/23 10:54 AM
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Joined: Dec 2021
Posts: 1,144
Loudoun County, VA
Brad_Haak
OP
super stock
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OP
super stock
Joined: Dec 2021
Posts: 1,144
Loudoun County, VA
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It's been so long since the issue first popped up that I had forgotten that the problem started after switching to my T/A valve body  It's not the linkage Maybe the NSS can be screwed in a little farther, but I don't recall it being loose when I was hooking everything up So the comments re "something" about the rooster comb make sense... what ever the fix is
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: Car turns over (starts) only in N, not Park
[Re: Brad_Haak]
#3187620
10/30/23 12:50 PM
10/30/23 12:50 PM
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Joined: Jan 2003
Posts: 25,858
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,858
Rio Linda, CA
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Have you actually verified that by doing as suggested and disconnecting the linkage then moving the shift lever full back? You will not know for sure until you do this. While the linkage is disconnected, move the lever through the gears and make sure there is a firm detent at each gear, no slop when it's in a detent. There are rare cases where the shift shaft that is swedged into the roostercomb can come loose and cause excessive play.
The INTERNET, the MISinformation superhighway
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Re: Car turns over (starts) only in N, not Park
[Re: John_Kunkel]
#3187744
10/30/23 09:43 PM
10/30/23 09:43 PM
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Joined: Jan 2003
Posts: 15,411
Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,411
Omaha Ne
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Have you actually verified that by doing as suggested and disconnecting the linkage then moving the shift lever full back? You will not know for sure until you do this. While the linkage is disconnected, move the lever through the gears and make sure there is a firm detent at each gear, no slop when it's in a detent. There are rare cases where the shift shaft that is swedged into the roostercomb can come loose and cause excessive play. That's a possibility as I have seen more than one loosen up myself. A real simple way to diagnose this is to drop the flippin pan and visually see what the problem is. OP just stated the problem started after changing the Valve body  🙄🧩🍻[u][/u]
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Re: Car turns over (starts) only in N, not Park
[Re: John_Kunkel]
#3187813
10/31/23 11:13 AM
10/31/23 11:13 AM
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Joined: Dec 2021
Posts: 1,144
Loudoun County, VA
Brad_Haak
OP
super stock
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OP
super stock
Joined: Dec 2021
Posts: 1,144
Loudoun County, VA
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Have you actually verified that by doing as suggested and disconnecting the linkage then moving the shift lever full back? You will not know for sure until you do this. While the linkage is disconnected, move the lever through the gears and make sure there is a firm detent at each gear, no slop when it's in a detent. There are rare cases where the shift shaft that is swedged into the roostercomb can come loose and cause excessive play. Yes, this is exactly what I did and why I'm confident in saying it's not the linkage. I spent at least an hour going back and forth between the shifter, the linkage and the lever on the trans adjusting everything to ensure there is clean engagement with each gear and no binding in the mechanism. It wasn't that way to start (felt "tight" at either one end of the range or the other), but the last tweaks left it with good freedom of movement from P to 1. If there's something going on w/ the rooster comb, I don't know at this time. It will be one of the next things I look into when I crawl back under the car.
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: Car turns over (starts) only in N, not Park
[Re: Brad_Haak]
#3187881
10/31/23 04:44 PM
10/31/23 04:44 PM
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Joined: Jan 2003
Posts: 15,411
Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,411
Omaha Ne
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Have you actually verified that by doing as suggested and disconnecting the linkage then moving the shift lever full back? You will not know for sure until you do this. While the linkage is disconnected, move the lever through the gears and make sure there is a firm detent at each gear, no slop when it's in a detent. There are rare cases where the shift shaft that is swedged into the roostercomb can come loose and cause excessive play. Yes, this is exactly what I did and why I'm confident in saying it's not the linkage. I spent at least an hour going back and forth between the shifter, the linkage and the lever on the trans adjusting everything to ensure there is clean engagement with each gear and no binding in the mechanism. It wasn't that way to start (felt "tight" at either one end of the range or the other), but the last tweaks left it with good freedom of movement from P to 1. If there's something going on w/ the rooster comb, I don't know at this time. It will be one of the next things I look into when I crawl back under the car. Next time use a Volt meter or test light with one end hooked to battery voltage and the other to the middle pin on the switch. If the light turns on or you show V in Park your NSS is working. All it does is provide a ground to energize the starter relay. Your problem would then be the wire between the two
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Re: Car turns over (starts) only in N, not Park
[Re: TJP]
#3188218
11/02/23 09:40 AM
11/02/23 09:40 AM
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Joined: Dec 2021
Posts: 1,144
Loudoun County, VA
Brad_Haak
OP
super stock
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OP
super stock
Joined: Dec 2021
Posts: 1,144
Loudoun County, VA
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TJP - Thanks for the trouble-shooting guidance 
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: Car turns over (starts) only in N, not Park
[Re: Brad_Haak]
#3188462
11/03/23 12:10 PM
11/03/23 12:10 PM
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Joined: Jan 2003
Posts: 25,858
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,858
Rio Linda, CA
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Since you state that the problem started with a VB change, it's possible that the VB maker installed a roostercomb with the incorrect stop plate. The stop plate is cover plate for some of the valves, besides being a cover it provides a stop for the ear on one side of the roostercomb. (area of plate in orange) The pic below shows the two different styles of roostercomb and the stop plate that is correct for each one. If the plate on the right is installed with the roostercomb on the left, it could prevent the roostercomb from traveling all the way to the Park position.
The INTERNET, the MISinformation superhighway
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Re: Car turns over (starts) only in N, not Park
[Re: John_Kunkel]
#3188483
11/03/23 01:23 PM
11/03/23 01:23 PM
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Joined: Jan 2003
Posts: 15,411
Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,411
Omaha Ne
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Since you state that the problem started with a VB change, it's possible that the VB maker installed a roostercomb with the incorrect stop plate. The stop plate is cover plate for some of the valves, besides being a cover it provides a stop for the ear on one side of the roostercomb. (area of plate in orange) The pic below shows the two different styles of roostercomb and the stop plate that is correct for each one. If the plate on the right is installed with the roostercomb on the left, it could prevent the roostercomb from traveling all the way to the Park position. John, could you put all your posts of TF issues in a book or on a thumb drive 🤪. Actually I just wanted to thank you for all you contributions to helping others this site 🍻
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Re: Car turns over (starts) only in N, not Park
[Re: 69gtxvert]
#3188955
11/05/23 05:23 PM
11/05/23 05:23 PM
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Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
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Now this post, fellow Mopar people, is what tech help forums are all about. So glad we have experience and knowledge like this that John is willing to take the time to pass along. Indeed!!
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: Car turns over (starts) only in N, not Park
[Re: fast68plymouth]
#3189367
11/07/23 02:24 PM
11/07/23 02:24 PM
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Joined: Dec 2021
Posts: 1,144
Loudoun County, VA
Brad_Haak
OP
super stock
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OP
super stock
Joined: Dec 2021
Posts: 1,144
Loudoun County, VA
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Now this post, fellow Mopar people, is what tech help forums are all about. So glad we have experience and knowledge like this that John is willing to take the time to pass along. Indeed!! Group hug!!! 
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: Car turns over (starts) only in N, not Park
[Re: Brad_Haak]
#3189406
11/07/23 04:08 PM
11/07/23 04:08 PM
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Joined: Jan 2003
Posts: 25,858
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,858
Rio Linda, CA
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The easiest way to determine if the roostercomb is the problem is to remove the NSS (might lose some fluid) and see if you can see (you'll probably need a mirror) the metal contact centered in the hole with the shifter in Park.
The INTERNET, the MISinformation superhighway
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Re: Car turns over (starts) only in N, not Park
[Re: TJP]
#3189622
11/08/23 01:38 PM
11/08/23 01:38 PM
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Joined: Jan 2003
Posts: 25,858
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,858
Rio Linda, CA
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John, On the plates and coms pictured in post # #3188462 is there a way identify which of the two separate combinations is correct for a given year? Out of all the TF's I swapped over the years I nenver ran into the iissue, granted most were part throttle kickdown units but it got me to wondering is that is when the change took place.  I'd have to go to the parts book to be sure but, IIRC, the one on the left is late '68 through '70 one on the right is '71-on.
The INTERNET, the MISinformation superhighway
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Re: Car turns over (starts) only in N, not Park
[Re: Brad_Haak]
#3189675
11/08/23 06:09 PM
11/08/23 06:09 PM
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Joined: Jan 2003
Posts: 8,028
Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,028
Tulsa OK
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It's been so long since the issue first popped up that I had forgotten that the problem started after switching to my T/A valve body It's not the linkage Maybe the NSS can be screwed in a little farther, but I don't recall it being loose when I was hooking everything up So the comments re "something" about the rooster comb make sense... what ever the fix is Mine is 50/50 on working in P but it always works in N. Usually you can rock the car and the pawl will fall in a little more and it will work in P. It is always firmly in park but unless the car rocks back or forward it usually doesn't engage enough for the NS to work. It really only bothers me when I use my bump button when I run the valves. I usually have to rock it back and forth a little for it to go all the way into park.
68 Barracuda Formula S 340
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