95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners

Code PO- 125 temp sensor on 3.4 ??

Thread Tools
 
Search this Thread
 
Old May 24, 2010 | 06:58 PM
  #1  
roundhouse's Avatar
Thread Starter
Registered User
 
Joined: Nov 2004
Posts: 184
Likes: 0
Code PO- 125 temp sensor on 3.4 ??

Exactly where is this sensor located on the 3.4 V-6?


I was getting a code for a bad o2 sensor, but no longer am, and now Im getting one for a bad temp sensor.

Gotta pass the smog check soon, thanks.
Reply
Old May 24, 2010 | 07:37 PM
  #2  
J2F42C's Avatar
Registered User
 
Joined: Feb 2010
Posts: 570
Likes: 0
From: Outer Banks, NC
I could not find the link from the online FSM so here you go. Just make sure you buy an OEM ECT/water temp sensor and new gaskets if you take off the front fuel pipe....

Reply
Old May 25, 2010 | 04:23 AM
  #3  
roundhouse's Avatar
Thread Starter
Registered User
 
Joined: Nov 2004
Posts: 184
Likes: 0
Originally Posted by J2F42C
I could not find the link from the online FSM so here you go. Just make sure you buy an OEM ECT/water temp sensor and new gaskets if you take off the front fuel pipe....

Thanks for the pic,

I need to replace the gaskets on the fuel line?

WHeres the cheapest best place to get the sensor?

Im guessing not at the stealership.


I just swapped the sensor with one from the 3.0 I recently yanked from a 95 runner, but that didnt change anything, apparently its a bad sensor as well.

is there a way to test the sensor?
Reply
Old May 25, 2010 | 08:07 PM
  #4  
J2F42C's Avatar
Registered User
 
Joined: Feb 2010
Posts: 570
Likes: 0
From: Outer Banks, NC
Testing the ECT sensor....

Here is the procedure. No, one must get the OEM ECT sensor from the dealer as far as I know. You can try 1sttoyotaparts.com for a cheaper price.

Just curious, how did you get the old one out?

The numbers on the Y axis on the graph are measured in Kohms....



Last edited by J2F42C; May 25, 2010 at 08:08 PM. Reason: lack input
Reply
Old May 29, 2010 | 12:04 PM
  #5  
roundhouse's Avatar
Thread Starter
Registered User
 
Joined: Nov 2004
Posts: 184
Likes: 0
Originally Posted by J2F42C
Here is the procedure. No, one must get the OEM ECT sensor from the dealer as far as I know. You can try 1sttoyotaparts.com for a cheaper price.

Just curious, how did you get the old one out?

The numbers on the Y axis on the graph are measured in Kohms....
I just removed the crossover fuel pipe and removed the sender.
Reply
Old May 29, 2010 | 12:36 PM
  #6  
scuba's Avatar
Registered User
 
Joined: Jan 2008
Posts: 11,338
Likes: 120
From: Austin, Texas
http://www.ncttora.com/fsm/2003/index.html



Reply
Old May 29, 2010 | 08:00 PM
  #7  
javadoody's Avatar
Registered User
 
Joined: Feb 2004
Posts: 353
Likes: 0
From: colorado
Originally Posted by J2F42C
Here is the procedure. No, one must get the OEM ECT sensor from the dealer as far as I know. You can try 1sttoyotaparts.com for a cheaper price.
timely advice, thanks, i just through a 128 code last night. coolant temp below thermostat regulating temp--i figure it can't be anything but the ect but didn't know if i trusted one from autozone.
Reply
Old Jun 17, 2010 | 06:30 PM
  #8  
michalik_piotr's Avatar
Registered User
 
Joined: Mar 2007
Posts: 762
Likes: 0
From: Seattle
old theread but i just got off the phone with a parts guy here at lk city toyota and he read the same code (that i got today, 125) and after talking about cooling system temp it went and said that its the front o2 sensor that is actually at fault. hoping to clear this up.
i went ahead and cleaned my MAF instead and cleared out the code by disconnecting the batt. sor fat its gone but i suspect it will come back.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
raptor510
86-95 Trucks & 4Runners
19
Feb 17, 2017 07:11 AM
nonstop
Newbie Tech Section
3
Jul 24, 2015 06:29 PM
greenbuggy
3.4 Swaps
4
Jul 23, 2015 11:51 AM
bryan34w
84-85 Trucks & 4Runners
0
Jul 6, 2015 05:53 PM




All times are GMT -8. The time now is 06:16 AM.