Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk

Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


Reply
 
Thread Tools Display Modes
Old 07-17-2008, 08:16 PM   #1
OBEEWON
Post Whore!
 
OBEEWON's Avatar
 
Join Date: Feb 2006
Location: Hightened State of Emergency
Posts: 6,053
Trader Rating: (9)
OBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond repute
Feedback Score: 9 reviews
Temp Gauge/Coolant Sensor (Long)

S13 blacktop

I was having an issue with getting air in my coolant system earlier this summer. After replacing rad cap, flushing rad, and changing some hoses everything settled.

Prior to that I had an issue with the connector to the ECU/dash temp sensors. Sometimes it would jiggle lose and the car would start running super rich till I would tighten the connection. (When this happened the temp gauge would stop working, since they were on the same connector.)

Shortly after all this the gauge started acting really wierd. It would read super low temp, like barely above the bottom tick mark. Every day it read lower and lower but the car was clearly at norm temp.

That brings me to today. The gauge wont read at all. Its as if it slowly died. I have the connector secure, re-soldered the wiring for the CTS to the dash, and it wont even lift off the little needle.

The wierd thing is when I disconnect the plug that goes to the harness from the two CTS' the idle jumps up for a moment then goes back down. Same thing when I reconnect it.

Any help is greatly appreciated.


(Oh yeah, I bought an ECU CTS from Courtessy, but its the wrong one. So I didnt replace that yet)
__________________
OBEEWON is offline   Reply With Quote
Sponsored Links
Old 07-18-2008, 04:13 AM   #2
cotbu
Post Whore!
 
cotbu's Avatar
 
Join Date: Sep 2005
Location: SWFL
Age: 49
Posts: 3,318
Trader Rating: (3)
cotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nice
Feedback Score: 3 reviews
The 2wire ecu temp sensor will store a code in the ecu, if it's faulty. The single wire thermistor will not, but will cause the gauge to read crazy.

When you disconnected and reconnected the plug, more than likely the ecu temp sensor is triggering the ecu, and you should have a code stored.
That's telling me, it's working normally. Try disconnecting the thermistor from the sensor plug to see if your temp gauge changes. You're bound to hear get an aftermarket gauge at least twice. I would fix the problem first, because it could be a short in the harness. Check continuity on the dash to ecu connector then from ecu to thermistor. Then the resistance on thermistor against the FSM or thermometer (if you know the co-efficient). Probably overkill, just replace the thermal resistor.
__________________

LoverTechnologies "Half Broken Things!"
cotbu is offline   Reply With Quote
Old 07-18-2008, 05:24 AM   #3
OBEEWON
Post Whore!
 
OBEEWON's Avatar
 
Join Date: Feb 2006
Location: Hightened State of Emergency
Posts: 6,053
Trader Rating: (9)
OBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond repute
Feedback Score: 9 reviews
Thermistor is the one wire correct? Where do they sell the resistors.
Is there a trouble spot on the harness that usually shorts in this instance? Like back of the cluster or something?

It seems like my A/F isnt really affected with the sensor connected or not. It changes for a second but goes back. Plust my idle is high usually. (cammed, but still high for a cam)
__________________
OBEEWON is offline   Reply With Quote
Old 07-18-2008, 06:28 AM   #4
cotbu
Post Whore!
 
cotbu's Avatar
 
Join Date: Sep 2005
Location: SWFL
Age: 49
Posts: 3,318
Trader Rating: (3)
cotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nice
Feedback Score: 3 reviews
Correct, auto parts chains may carry, but Sheridan Nissan is were I would order mine, because I can show them exactly what I need.
Nissan calls it a thermal transmitter

How High is your idle, does it ever come down, can you make it go up or down by pinching a vacuum line?
__________________

LoverTechnologies "Half Broken Things!"
cotbu is offline   Reply With Quote
Old 07-18-2008, 10:58 AM   #5
OBEEWON
Post Whore!
 
OBEEWON's Avatar
 
Join Date: Feb 2006
Location: Hightened State of Emergency
Posts: 6,053
Trader Rating: (9)
OBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond repute
Feedback Score: 9 reviews
On average its about 1200, I can drop it down by putting it in gear and letting up on the clutch a little while on the brake. lowest is about 850 on average. Pinching vac line doesnt really change it that I can recall.

Do you know the part number for the S13 blacktop one? Is there a difference?
__________________
OBEEWON is offline   Reply With Quote
Old 07-18-2008, 11:38 AM   #6
adictd2b00st
Zilvia Addict
 
Join Date: May 2003
Location: OH
Age: 42
Posts: 695
Trader Rating: (4)
adictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to behold
Feedback Score: 4 reviews
Send a message via AIM to adictd2b00st
anyone know the part number for the s14 one? my gauge is going crazy too, i ordered one from napa but its the 2 prong guy, not the single
adictd2b00st is offline   Reply With Quote
Old 07-18-2008, 12:12 PM   #7
OBEEWON
Post Whore!
 
OBEEWON's Avatar
 
Join Date: Feb 2006
Location: Hightened State of Emergency
Posts: 6,053
Trader Rating: (9)
OBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond repute
Feedback Score: 9 reviews
Bump for part numbers.
__________________
OBEEWON is offline   Reply With Quote
Old 07-18-2008, 03:18 PM   #8
cotbu
Post Whore!
 
cotbu's Avatar
 
Join Date: Sep 2005
Location: SWFL
Age: 49
Posts: 3,318
Trader Rating: (3)
cotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nice
Feedback Score: 3 reviews
This is for a 95-99 sentra se-r 25080-89907
It may work or not, they suggested that, "I bring in my old thermistor to verify exactly..." HTH

Part Number 25080-89907
__________________

LoverTechnologies "Half Broken Things!"
cotbu is offline   Reply With Quote
Old 07-18-2008, 03:49 PM   #9
OBEEWON
Post Whore!
 
OBEEWON's Avatar
 
Join Date: Feb 2006
Location: Hightened State of Emergency
Posts: 6,053
Trader Rating: (9)
OBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond reputeOBEEWON has a reputation beyond repute
Feedback Score: 9 reviews
Thanks man!!
__________________
OBEEWON is offline   Reply With Quote
Old 07-20-2008, 12:03 PM   #10
adictd2b00st
Zilvia Addict
 
Join Date: May 2003
Location: OH
Age: 42
Posts: 695
Trader Rating: (4)
adictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to beholdadictd2b00st is a splendid one to behold
Feedback Score: 4 reviews
Send a message via AIM to adictd2b00st
http://www.courtesyparts.com/betasit...3714_3716.html

dunno if that helps either, looks like the single wire one is the one on the left in that picture?
adictd2b00st is offline   Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

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 -6. The time now is 12:57 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
vB.Sponsors
Copyright ? 1998 - 2022, Zilvia.net