how do you wire up a 4 wire o2 sensor - DodgeForum.com


3rd Gen Ram Tech 2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

how do you wire up a 4 wire o2 sensor

Reply
 
 
  #1  
Old 05-11-2010, 01:36 PM
badblackram06's Avatar
badblackram06
badblackram06 is offline
Veteran
Thread Starter
 
Join Date: Jan 2009
Location: Southwest, MS
Posts: 479
Default how do you wire up a 4 wire o2 sensor

Ok i finally got another o2 sensor. This new sensor has a purple, white, grey, and black wire. The original sensor has 2 black wires, 1 blue and 1 white. What wire goes where? it did not come with instructions.
Also i scanned the dtcs before i did anything and catalyst effeciecy bank 1 was found, i believe the code was p0420. What does this mean? The threads on the bank 1 downstream sensor i'm changing got messed up when i was pulling it out. I was able to file down some of the threads and put it back in tight but after a few miles of driving my CEL came on. I'm just curious because my Gas mileage has dropped a little.

Last edited by badblackram06; 05-11-2010 at 01:45 PM.
Reply With Quote
  #2  
Old 05-11-2010, 02:15 PM
weedahoe's Avatar
weedahoe
weedahoe is offline
Hall Of Fame
Hall of Fame Member
 
Join Date: Mar 2009
Location: South GA
Posts: 19,154
Default

Thats going to hard if not impossible to do without more info. What other O2 did you get? Any paper work with it to let you know what wire is what? Why didnt you get a stock O2 for the ram so you could just plug it in?

They are about $25 at Autozone for the HEMI
Reply With Quote
  #3  
Old 05-11-2010, 02:43 PM
Trupiano's Avatar
Trupiano
Trupiano is offline
Veteran
 
Join Date: Sep 2009
Location: Jacksonville, Ar (USAF)
Posts: 251
Default

I know all mine have 4 wires, 2 of them are to heat the 02 sensor, so the truck gets an accurate reading as soon as its started. I don't know if that will work. I guess you could just connect the two the work the actual sensor, and leave the other two out. Not quite sure.
Reply With Quote
  #4  
Old 05-11-2010, 03:32 PM
JoeHemi's Avatar
JoeHemi
JoeHemi is offline
Record Breaker
 
Join Date: Nov 2008
Location: Pierce County, Wa
Posts: 2,273
Default




Reply With Quote
  #5  
Old 05-11-2010, 03:56 PM
badblackram06's Avatar
badblackram06
badblackram06 is offline
Veteran
Thread Starter
 
Join Date: Jan 2009
Location: Southwest, MS
Posts: 479
Default

It is a Delphi sensor from ebay. I checked everywhere for a plug in kind but all they had was universal types and nothing under 49 bucks. I found out what the new sensor wires mean. Thanks joe for the diagram. exactly what i was looking for. I got a question though the diagram for the delphi sensor shows 2 heater wires. I hooked one to the heater control then one to the return. I put it in and it throws a code for 1/2 heater circuit high

Last edited by badblackram06; 05-11-2010 at 04:24 PM.
Reply With Quote
  #6  
Old 05-12-2010, 08:05 PM
badblackram06's Avatar
badblackram06
badblackram06 is offline
Veteran
Thread Starter
 
Join Date: Jan 2009
Location: Southwest, MS
Posts: 479
Default

By using joehemi's o2 sensor plug diagram what wire hooks to wire 1 and 3? The new sensor says it has 2 heater wires. Does it matter what heater wire goes to the factory plug? I know one at least goes to the heater control but what does the o2 return (down) mean? if i had known this was going to be a headache then i would have just found a factory sensor with the plug already on it.
Reply With Quote
 
 
 

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Strocket
1st Gen Durango
3
08-02-2015 05:20 PM
Fubba
2nd Gen Ram Tech
2
07-27-2015 11:41 PM
drtydn
2nd Gen Ram Tech
11
07-17-2015 09:27 PM
galwaygirlatheart
Dodge Caravan
8
07-16-2015 11:23 PM
Crytot
1st Gen Dakota
5
07-13-2015 05:26 PM


Thread Tools
Search this Thread

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Featured Sponsors

All times are GMT -4. The time now is 06:51 PM.