Transmission Range Sensor - required?
Thread Starter
Joined: Oct 2008
Posts: 313
Likes: 5
From: Mississippi Gulf Coast
Thanks, 46Coupe.
Anyone else actually done away with it? I'll buy one if it'll simplify things, but if it can /should be programmed out, I'll delete it and the wires for it.
Anyone else actually done away with it? I'll buy one if it'll simplify things, but if it can /should be programmed out, I'll delete it and the wires for it.
Column shifted auto trans had them. Any LSx auto with a floor shifter didnt. In a nut shell, your PCM needs to know when you're in park/neutral vs any gear/reverse. If you stock shifter has this covered you can delete the range switch
Thread Starter
Joined: Oct 2008
Posts: 313
Likes: 5
From: Mississippi Gulf Coast
F-Body cars don't have this?
I don't have a "stock" shifter in the '36. I currently have a column from a '70s Nova (I think) with a column shift. Haven't decided for certain what my final configuration will be (floor vs. column).
Thanks for the reply, I don't mean to be so dense!
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
It can be changed/deleted as needed. What year PCM are you running and what kind of trans? If its a red/blue PCM and non electronic trans I would switch it over to a P/N switch when you have the PCM reflashed and hook up a P/N switch to your shifter. Same basic idea if its a blue/green PCM. If you are running an electronic trans I would keep the PRNDL switch, you can actually run without it but it would have to be programmed out of the PCM and the car will have better driveability with it. IE: It will kick the idle up a bit when in drive, there are different spark and airflow tables for drive and park, etc.
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Thread Starter
Joined: Oct 2008
Posts: 313
Likes: 5
From: Mississippi Gulf Coast
G-Body,
That's exactly the info I was looking for. I'll add one. It's less work than deleting it and it does have some benefits. Thanks.
BTW, It's an '04 Truck Transmission and an '05 Truck Harness and PCM behind an '02 5.3.
That's exactly the info I was looking for. I'll add one. It's less work than deleting it and it does have some benefits. Thanks.
BTW, It's an '04 Truck Transmission and an '05 Truck Harness and PCM behind an '02 5.3.
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Verdad Gallardo Pocket, thanks for the reply but your statement seems to contradict itself. If the PCM "needs" to know what gear you're in, how does it get that info in a car with a floor mounted shifter?
F-Body cars don't have this?
I don't have a "stock" shifter in the '36. I currently have a column from a '70s Nova (I think) with a column shift. Haven't decided for certain what my final configuration will be (floor vs. column).
Thanks for the reply, I don't mean to be so dense!
F-Body cars don't have this?
I don't have a "stock" shifter in the '36. I currently have a column from a '70s Nova (I think) with a column shift. Haven't decided for certain what my final configuration will be (floor vs. column).
Thanks for the reply, I don't mean to be so dense!
Since you're using a column shifter, leave the switch in place. The P/neutral function and back-up lights are the only useful wires
Staging Lane
Joined: Apr 2007
Posts: 74
Likes: 0
What switch are you guys talking about? Any pics? I am finishing up an LS2/4L70 install and am having some issues with idle speed and gear selection. Basically, in park and neutral, it idles perfectly normal. When I put it in Reverse or Drive, the rpms go up and you have to have your foot on the brake good but then it comes back down to normal after 5 seconds or so. It only does it when switching into one of those two. Going to park doesn't do it...going to Neutral doesn't do it. In fact, switching out of reverse or drive while the rpms are up will make them come back down. I'm trying to figure out if its a mechanical problem with my transmission or if it is a tuning issue. Also, the timing of the shifts feels off too.
Sorry to hijack the thread. Just interested in what this switch is and if it may be my problem?
Thanks
Sorry to hijack the thread. Just interested in what this switch is and if it may be my problem?
Thanks
On The Tree
Joined: Apr 2011
Posts: 108
Likes: 0
From: Mobile Alabama
I have a 2007 express van with a 2006 express tune, cable TB and 4l80e with 3200 stall. I hope to start it for the first time next week. A slight increase in idle overall should not be a big issue with the increased stall as far as i can see. However, if it will cause other issues or cause issues I have not heard of yet I can add these wires back in to my harness.
I am also using a F body shifter so I could wire to that if the computer will support it and I can find out if i need to supply a ground or a hot and to witch pin.
What does it control? Is it just the slight increase in idle?
I am also using a F body shifter so I could wire to that if the computer will support it and I can find out if i need to supply a ground or a hot and to witch pin.
Other wires on the shifter are for back-up lights and starter safety switch
On The Tree
Joined: Apr 2011
Posts: 108
Likes: 0
From: Mobile Alabama
Essentially, yes
Fbody floor shifter you can delete the trans switch or simply leave it unplugged. Fbody shifter: PCM P/neutral pin ORN/BLK to shifter connector pin B. Shifter connector pin A BLK/WHT to GRD
Other wires on the shifter are for back-up lights and starter safety switch
Fbody floor shifter you can delete the trans switch or simply leave it unplugged. Fbody shifter: PCM P/neutral pin ORN/BLK to shifter connector pin B. Shifter connector pin A BLK/WHT to GRD
Other wires on the shifter are for back-up lights and starter safety switch
Staging Lane
Joined: Apr 2007
Posts: 74
Likes: 0
Hey guys...I had my car at the tuner on Thursday. I was getting a pending P0705 transmission range code. I asked him if we could tune it out. He went in and where it shows the codes for him to work with...that code wasnt there. There was nothing he could do with it. He was using HP tuners.
My surging when putting in gear is intermittent now. Once in a while it does it and sometimes it doesnt.
On a positive note. My final numbers were right at 400hp and 400tq corrected on a mustang dyno! I was surprised to see that kind of number. Engine is LS2 with 4L70
My surging when putting in gear is intermittent now. Once in a while it does it and sometimes it doesnt.
On a positive note. My final numbers were right at 400hp and 400tq corrected on a mustang dyno! I was surprised to see that kind of number. Engine is LS2 with 4L70
Teching In
Joined: Oct 2012
Posts: 31
Likes: 0
From: orange, ca
Is this the connector?
C091BE16-8321-4A58-8131-A260AA2BCC28-6706-00000CAFDC08C0EF_zpsad044bf7.jpg?t=1362678696
I started working on my red/blue truck harness and all the colored wires were removed from the PCM, i have the 4l60e and i will be using a aftermarket cable shifter. Is the needed or can it be discardedi
C091BE16-8321-4A58-8131-A260AA2BCC28-6706-00000CAFDC08C0EF_zpsad044bf7.jpg?t=1362678696
I started working on my red/blue truck harness and all the colored wires were removed from the PCM, i have the 4l60e and i will be using a aftermarket cable shifter. Is the needed or can it be discardedi
Thats part of it, theres another black connector to go with it
If your aftermarket shifter has a p/neutral switch, then you can delete those two connectors. If it doesnt, you need top retain the two wires pertaining to it
If your aftermarket shifter has a p/neutral switch, then you can delete those two connectors. If it doesnt, you need top retain the two wires pertaining to it
TECH Apprentice
Joined: Aug 2010
Posts: 381
Likes: 0
From: Melbourne, FL.
FWIW, my 2005 L59 (LM7 flex fuel) has never had the PNP switch on it and I' don't get codes nor do I have Idle issues in or out of gear. It's been in for two years now and over 10,000 miles.
