Coolant temp sensor - Page 2 - Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z
User Tag List

LinkBack Thread Tools
post #11 of 13 (permalink) Old 08-04-2018, 07:04 AM
Join Date: Oct 2017
Posts: 32
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Can anyone confirm that part no. 22630-N4200 is the correct temperature sensor for a 280z from 1977? I bought a part with this no., and although it looks the same as my old one, the seller said it was not correct for a 280z after I already bought the item.

Is the only thing you need to look at with a temperature sensor the thread size or are there also differences in the resistance of the sensor?
Peter_789 is offline  
Sponsored Links
post #12 of 13 (permalink) Old 08-04-2018, 02:52 PM
Senior Member
Join Date: Feb 2010
Location: Oregon
Posts: 3,785
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 706 Post(s)
This is what the correct ones look like, if you mean the sensor for the EFI system. It has the same two prong plug as the injectors. I have one of these sensors from this store on my engine now.
pdx280 is offline  
post #13 of 13 (permalink) Old 08-06-2018, 06:34 PM
Senior Member
cgsheen's Avatar
Join Date: Mar 2007
Location: Tempe, AZ
Posts: 632
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 65 Post(s)
Originally Posted by Peter_789 View Post
Is the only thing you need to look at with a temperature sensor the thread size or are there also differences in the resistance of the sensor?
Thankfully Nissan used coolant temperature sensors with the same resistance values for YEARS and across most of their product lines.

Remember that there are 3 different sensors in the thermostat housing in the early EFI Z's:
- Thermotime switch (2-pin Bosch connector closest to head, for EFI, controls the cold start valve - "On" at cool temps (below 57-72 degrees) "Off" at higher coolant temps - different style and mount than Temperature Sensor)
- Temperature Sensor (2-pin Bosch connector, for EFI, coolant temperaure sensor for ECU)
- Temperature Sender (single male bullet connector, for coolant temperature gauge in dash)

The Temperature Sensor (EFI) and Temperature sender (gauge) have the same resistance (Ohm) characteristics but totally different connectors. The Thermotime switch is closed circuit at cooler temperatures and open circuit at warmer temperatures.

1974 "early" 260Z - L28ET - MS3X full sequential fuel and spark, COP=Ford 4.6 coilpacks w/ Nissan Ignitor, diyautotune chopper wheel - FMIC - T04E .63 A/R - 400cc Injectors (too big!), 14point7 Spartan2 Wideband - C/R 5-speed - Coilovers - Big Brake Kit up front, Porterfield friction all around. Mesa, AZ
cgsheen is offline  

Quick Reply

Register Now

In order to be able to post messages on the Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

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


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

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

  Similar Threads
Thread Thread Starter Forum Replies Last Post
Head Temp Sensor vs. Coolant Temp Sensor mickey_bigdaddy 70-83 Tech Discussion Forum 6 09-15-2009 10:42 PM
Help - Part No. For L28ET Engine Temp \ Coolant Temp Sensor - Pics slownrusty 70-83 Tech Discussion Forum 13 11-11-2008 03:58 PM
Coolant Temp sensor or thermotime sensor? carbed79zx 70-83 Tech Discussion Forum 5 05-16-2007 06:12 PM
oil temp and coolant temp sensors interchange? intuitdriver 70-83 Tech Discussion Forum 6 04-14-2007 11:39 PM
head temp sensor vs water temp sensor? vscatman808 70-83 Tech Discussion Forum 3 05-31-2003 08:56 AM

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

Content Relevant URLs by vBSEO 3.6.1