Advertisement
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Home Who's Online Today's Posts HP Calculator CompD Gift Shop Mark Forums Read
Go Back   Competition Diesel.Com - Bringing The BEST Together > Tech Area- Dodge > Dodge Tech > 94-98 2nd Gen. 12V
Register Members List Timeslips EFI Live Library Invite Your Friends FAQ Calendar Mark Forums Read

Closed Thread
 
Thread Tools
Old 05-20-2020, 08:00 AM   #1
bateman
 
bateman's Avatar

Name: bateman
Title: Too Much Time
Status: Here
Join Date: Feb 2019
Location: Alabama
Member`s Gallery
Posts: 2,668
Problems with pot. mod

Second 5k potentiometer I’ve tried. Moved it slow as I can while driving and it just won’t adjust. I get lockup up at 50mph (35’s and 4.10’s). There is zero adjustability. Turned to far left or right of course results in no OD or lockup.

‘95 truck. 47rh. Temp sensor has resistor. Speed sensor in diff. seems to work fine. Truck drives fine with the tps plugged up.

Here’s the part that really threw me off. I have to turn that knob, to some degree, every time I crank the truck. Otherwise, no OD or lockup.

Any ideas? I feel like I’m probably missing something obvious. I’m pretty sure putting a meter on the pot. Is going to be the first answer. Would have done that already had I not left my meter in the boat. I’ll run to the lake today and test the voltage if needed.
 
Old 05-20-2020, 10:22 AM   #2
bateman
 
bateman's Avatar

Name: bateman
Title: Too Much Time
Status: Here
Join Date: Feb 2019
Location: Alabama
Member`s Gallery
Posts: 2,668
Some knowledgeable guys have peeped in here. What am I missing fellas?
 
Old 05-21-2020, 08:31 AM   #3
bateman
 
bateman's Avatar

Name: bateman
Title: Too Much Time
Status: Here
Join Date: Feb 2019
Location: Alabama
Member`s Gallery
Posts: 2,668
No ideas at all? I guess it’s time for a FMVB. Tired of dealing with it.
 
Old 05-21-2020, 09:41 AM   #4
biggy238
 
biggy238's Avatar

Name: biggy238
Title: Too Much Time
Status: Not Here
Join Date: Aug 2008
Location: Just North of Wrong
Member`s Gallery
Posts: 10,820
Check pot output voltage, and that it's wired/pinned as V+, Wiper, V-. Some are not built with that order.

The diff sensor should only be abs. Trans shifting only rely on the OSS on the trans. Check that the wiring isn't damaged at the OSS.
I would also get a scan tool and see what the PCM displays for tps input.

I'm curious if a slide pot would be easier to adjust. I will link one if I can find it on Mouser.

Sent from my motorola one vision using Tapatalk
__________________
Check out @bdmaximusworx

05.5 Campanella White TDi Jetta 5spd 45.5MPG
-Little Sexy
'10 Silver F250 CCLB 4X4 6.4L cummins Swapped
Insta @trash.panda250
 
Old 05-21-2020, 09:54 AM   #5
Mudn_1
 
Mudn_1's Avatar

Name: Mudn_1
Title: Sweet Home
Status: Not Here
Join Date: Apr 2007
Location: Trussville
Member`s Gallery
Posts: 5,290
Why not just install Switches for OD and Lockup? No need for FMVB and you can command whenever you want....
__________________
"One Up'N The Competition"
 
Old 05-21-2020, 10:07 AM   #6
bateman
 
bateman's Avatar

Name: bateman
Title: Too Much Time
Status: Here
Join Date: Feb 2019
Location: Alabama
Member`s Gallery
Posts: 2,668
Thank you biggy. My meter went berserk when we tried it. Guess it got water logged. Going to buy another today. Is 1.2v what these trucks see at idle? I don’t necessarily need a ton of adjustment, but if something isn’t working like it should I want to know why. I’ll report back with some proper readings.

Mudn, I don’t want to hit two switches every time I stop or get up to speed. I’m actually looking for some switches locally as I wanted to do that mod as well. But not stand alone switches. I want the truck to shift and all that on its own for daily driving and then be able to command when I want to play.

Main reason for the pot was reliability on road trips as my tps has been finicky in the past. 310k on the factory part as far as I know. Don’t want to be stranded in Florida. Well, maybe I do actually lol.
 
Old 05-21-2020, 10:45 AM   #7
zachu812
 
zachu812's Avatar

Name: zachu812
Title: Too Much Time
Status: Not Here
Join Date: Apr 2016
Member`s Gallery
Posts: 419
Let us know the wiper output voltage when you get your hands on a meter, I think something must be connected wrong or you got a bum part.
__________________
1995 RCLB 4x4: H-pump, 5x.012s, HX35
2001 RCLB 4x4: H-pump, 6x.013s, S472/S488
EdzGarage, Matt's Diesel Supply, HTS Transmissions
 
Old 05-21-2020, 11:37 AM   #8
bateman
 
bateman's Avatar

Name: bateman
Title: Too Much Time
Status: Here
Join Date: Feb 2019
Location: Alabama
Member`s Gallery
Posts: 2,668
Quote:
Originally Posted by zachu812 View Post
Let us know the wiper output voltage when you get your hands on a meter, I think something must be connected wrong or you got a bum part.
I bet you’re right. 2 in a row is not crazy when we are talking Chinese parts. Should have probably bought from Genos instead of eBay.
 
Old 05-21-2020, 12:13 PM   #9
TheSilverBullet
 
TheSilverBullet's Avatar

Name: TheSilverBullet
Title: All the correction factor
Status: Not Here
Join Date: Jan 2012
Location: Franklin,IA
Member`s Gallery
Posts: 1,598
Don’t do pot man
__________________
99 3500 black Laramie~Infinitive Performance Farrel Diesel Service Goerend Transmissions
98 12 valve with all the goodies from 2008
90 w250 "brownie" straight 6 standard transmission


Quote:
Originally Posted by dvst8r View Post
Dying is always a way bigger concern than egt's...
 
Closed Thread

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 12:33 PM.

 


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2006 - 2024, CompetitionDiesel.com
all information found on this site is property of www.competitiondiesel.com