I recently put a USDM cluster from 2001 ITR in to my 1998 ITR chassis. Everything is working fine except for the temp gauge. It will never move off of cold even though the motor warms up. I'm also running a stock ITR ECU. If I drive the car with the motor warmed up, VTEC does engage. That would mean that the sensor is talking to the ECU, correct? Where exactly does the gauge cluster get the temp reading from? Any help would be great.

 

i believe from the sensor on the dist side of the head if im thinking correctly

 

maybe the back of the board is different, green board that is, you can either swap the pins if its in wron location or.. find 98 cluster and swap all 4 gauges into it along with CF cover

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Casey &raquo;</TD></TR><TR><TD CLASS="quote">i believe from the sensor on the dist side of the head if im thinking correctly</TD></TR></TABLE>

He is right.

Is the same plug connector as the temp switch also. Make sure you don't have those two plugs mixed up...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec.dc2 &raquo;</TD></TR><TR><TD CLASS="quote">maybe the back of the board is different, green board that is, you can either swap the pins if its in wron location or.. find 98 cluster and swap all 4 gauges into it along with CF cover</TD></TR></TABLE>

Listen to this Brad. Just find a 97-98 LS cluster and swap the films.

 

Again, where exactly is the cluster getting the signal from? I guess I'll need to dig through the helms wiring diagrams. It does sound like a cluster problem because I would not get VTEC if the sensor had no reading, correct?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec.dc2 &raquo;</TD></TR><TR><TD CLASS="quote">maybe the back of the board is different</TD></TR></TABLE>

Does anyone know this for a fact?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bradstard &raquo;</TD></TR><TR><TD CLASS="quote">Again, where exactly is the cluster getting the signal from? I guess I'll need to dig through the helms wiring diagrams. It does sound like a cluster problem because I would not get VTEC if the sensor had no reading, correct?

Does anyone know this for a fact?</TD></TR></TABLE>


The green film is def. different. I had a 01 JDM cluster in the GSR for a while and I needed to swap the films (and the icon films) to get everything to work and light up properly. Many people look for another R cluster to play with but infact a cheap ol' GS automatic cluster will fit the bill.

 

Brad i had a very similar problem to this. The plug below the distributor was just loose. I wasn't getting any temp reading but still had vtec. i pushed that plug in and i got a temp reading.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboKneeGrow &raquo;</TD></TR><TR><TD CLASS="quote">Brad i had a very similar problem to this. The plug below the distributor was just loose. I wasn't getting any temp reading but still had vtec. i pushed that plug in and i got a temp reading.</TD></TR></TABLE>

i will be checking this as soon as i get out of work, as i have the same problem....except car is bone stock 97

i posted this similar question the other day.....

https://honda-tech.com/zerothread/2003313

 

The Thermo Unit (Item#10) controls the guage on the cluster. P/N: 37750-PH2-014

The ECT Sensor or Engine Coolant Temperature Sensor or TW Sensor (Item#12) is used by the ECU to read coolant temperatures. (Located directly behind the Thermo Unit and should have a two wire plug) P/N: 37870-PJ7-003

The Thermo Switch (Item#11) is used to switch on the Radiator Fan. P/N: 37760-P00-004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bradstard &raquo;</TD></TR><TR><TD CLASS="quote">It does sound like a cluster problem because I would not get VTEC if the sensor had no reading, correct?

Does anyone know this for a fact?</TD></TR></TABLE>

No. The Thermo Unit is a one way unit that runs directly to the Temperature Meter in the cluster. The ECU does not read off of this.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by len &raquo;</TD></TR><TR><TD CLASS="quote">

The Thermo Unit (Item#10) controls the guage on the cluster. P/N: 37750-PH2-014

The ECT Sensor or Engine Coolant Temperature Sensor or TW Sensor (Item#12) is used by the ECU to read coolant temperatures. (Located directly behind the Thermo Unit and should have a two wire plug) P/N: 37870-PJ7-003

The Thermo Switch (Item#11) is used to switch on the Radiator Fan. P/N: 37760-P00-004

</TD></TR></TABLE>

Thanks

I have the same problem with my car

 

Len is my hero!

 

Had the same problem. Len was right.

 

when is Len ever wrong!?!?! challenge him I dare you