Identifying vacuum/electrical device - Dodge Cummins Diesel Forum
94-98 Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 05-30-2019, 05:43 PM Thread Starter
Newbie
 
Join Date: Mar 2019
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Identifying vacuum/electrical device

1996 D3500 2wd manual trans. On the drivers side inner fender, there is a square device with an electrical connector in the side and a vacuum port out the top. Mine has the vacuum port cracked. What is it? There's a remnant of a part number on it but it's illegible. Here's a pick...it's on the far right and has a rusty looking base on it with a hose out the top secured by a wire clamp. By the way, this is not my engine compartment.

Thanks!



tenxal is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 05-30-2019, 06:01 PM
The Uppity 12v Guy
 
dauntless89's Avatar
 
Join Date: Jul 2013
Location: Cedar City, UT
Posts: 7,716
Thanks: 848
Thanked 1,321 Times in 950 Posts
Garage
iTrader Score: 1 reviews
It's a switch that illuminates the brake warning idiot light on the dash when vacuum is low.

'95 2500 ECLB 4x4, 334k and paused due to epic transformation in progress.
dauntless89 is offline  
post #3 of 7 (permalink) Old 05-30-2019, 09:24 PM
Armchair Mechanic
 
colin91's Avatar
 
Join Date: Sep 2008
Location: CA
Posts: 1,572
Thanks: 5
Thanked 127 Times in 115 Posts
iTrader Score: 1 reviews
Low vacuum warning switch. No longer made or available anywhere that I have found. Vacuum port/nipple cracked off mine as well awhile ago. Without being able to find a good replacement I shoved a brass barb in the hole best I could and then put JB Weld around it to seal it up and make it sturdy. Been working fine that way for 5+ years.

1996 2500 ECLB, NV4500, 4X4
Engine: 24 Valve P-Pump Swapped,
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
, Adj. Timing Gear @ 20*, Haisley L19 studs, DAP 3 Piece Mani, Fluidampr, Southbend DD3250, 5" Exhaust+FTE Resonator
Air: HE351VE w/ Banshee Controller
Fuel: 215HP P7100, Infinite Performance 6x11 VCO, Scheid Conversion Lines, PDD 055s, AirDog II 165, Dual Feed, #0 plate, 4K GSK
Suspension: Thuren 3" Coils, Thuren Sway Bar, DOR Track Bar, DOR Shackle Flip, DOR Extreme Bent Long Arms, Synergy Steering, Fox 2.0 IFPs, Yukon Hub Conversion, Dynatrac BJs, 37x12.5x17 Toyo M/T's on H2s
colin91 is offline  
Sponsored Links
Advertisement
 
post #4 of 7 (permalink) Old 05-31-2019, 08:46 AM
Diesel Head
 
Join Date: Sep 2011
Location: Parkton, MD.
Posts: 3,324
Thanks: 1,277
Thanked 272 Times in 233 Posts
iTrader Score: 0 reviews
Why is there a tube going to your top shock bolt

SOLD My 2001 and 2005 .
SOLD 2004.5 Sons mod truck
2006 Sons Truck and 1994 12 valve soot machine
24hrsparkey is offline  
post #5 of 7 (permalink) Old 05-31-2019, 09:30 AM Thread Starter
Newbie
 
Join Date: Mar 2019
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by 24hrsparkey View Post
Why is there a tube going to your top shock bolt
Not my engine compartment....pic is for purpose of identifying the vacuum switch.
tenxal is offline  
post #6 of 7 (permalink) Old 05-31-2019, 03:45 PM
Moderator
 
9297oldram's Avatar
 
Join Date: Sep 2010
Location: Huntington In.
Posts: 20,059
Thanks: 631
Thanked 2,178 Times in 2,035 Posts
iTrader Score: 0 reviews
I just put a vacuum gauge in the end of mine so I could check to see what my vacuum was.

84 K5 Blazer 97 12v, 47re with E-TransControl, Dodge Dana 60 with free spin hubs, Dana 70, B&M Mega shifter

96 F350 SC dually zf5, 4x4, 92 Cummins, THD 5x12's, THD fuel pin, THD HVLP with adjustable fuel pressure mod, WM, h1c 60/60/12cm WG wired
9297oldram is offline  
post #7 of 7 (permalink) Old 06-05-2019, 09:46 PM Thread Starter
Newbie
 
Join Date: Mar 2019
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Update: the vacuum hose nipple was cracked and leaking vacuum. I drilled out the hose hipple area on the switch and epoxied a brass nipple in. Works great, solved the ABS/Brake warning light issue.
tenxal is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Dodge Cummins Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome