Thread: coolant temp sensor

hello guys!

does gtir has the same coolant temp sensor with other sr20?

No, it doesn't. The GTi-R shares the same temperature sending unit (for the gauge) as other SR20's but the coolant temperature sensor (for the ECU) is different. If you are using a USDM ECU, use a USDM sensor.

i use jdm both and it works fine upon checking on consult .. tnx anyway

I do not agree 100%.

The Coolant Temp Sensor (Gauge) has 2 options that are do not interchange. 25080-89907 & 25080-89903. Using the incorrect sensor will give you an incorrect reading on your gauge - I know this personally. @nibbz9999 was quite vague on his question.


B14:
22630-44B20 - Coolant Temp Sensor - ECU
22636-N4200 - Coolant Temp Sensor (GASKET) - ECU
25080-89907 - Coolant Temp Sensor - Gauge

B13
22630-51E00->22630-51E02 - Coolant Temp Sensor & Gasket - ECU
22636-N4200 - Coolant Temp Sensor (GASKET) - ECU
25080-89903 - (08/90~08/92 US Made) (09/90~07/92 Jap Made)Coolant Temp Sensor - Gauge
25080-89907 - (08/92~E N D US Made) (07/92~E N D Jap Made)Coolant Temp Sensor - Gauge

N14:
22630-51E00->22630-51E02 - Coolant Temp Sensor & Gasket - ECU
25080-89903 - (08/90~08/92) Coolant Temp Sensor - Gauge
25080-89907 - (12/92~E N D) Coolant Temp Sensor - Gauge


Hope this helps - I can always add screen shots if needed or other model series to the list.

You are being incredibly specific; I was not being so specific.

The recommendations for most people should be one of simplicity. If you are using an OBD1 ECU/harness, you should use a matching OBD1 CTS. You should do the same for OBD2. The rule of thumb is to always match the sensors to the ECU. This is a good rule to follow for those that do not have access to FAST, other resources, or the know how to check the sensors. If an individual had endless amounts of free time, I am sure he/she could find many other matches and mis-matches of these two sensors between JDM, USDM, CADM, EUDM and other variations of FAST. I was being incredibly simplistic in my answer to match the simplicity of his question. Most specifically to the lack of information on his ECU and engine harness.

The CTS affects performance and as such, caution should be taken when selecting the proper (resistance range) sensor. The thermal transmitter/sensor for the gauge does not affect performance and as such is not a major concern. I did not research every SR combination of gauge sensors which is why I did not say ALL. Maybe I should have said most other......

At the end of the day, if somebody is really curious about whether or not they have the right CTS (or a properly functioning CTS), they should monitor their fuel consumption vs what it was before the swap, as well as their AFR's during the span of the warmup to operating temperature. They should also measure the resistance of the sensor at different temperature ranges to see if it is a match for the ECU (checked with FSM specifications) they are using. I am convinced that a lot of people do limited amounts of research on most of these types of things and just plug round things into round holes and square things into square holes. Of course, if it works, all's well that ends well.

But I digress....

Can't blame me for being anal. When I did my first 54C swap back in the mid 90's into my 93, my temp gauge read overheating off the chart when I used the 54C gauge sensor. Once I swapped it over, all was good. This is just my experience and was sharing.

Unfortunately it is true that too many people and don't thoroughly research what they are doing before they do it.

Yes, I have an extensive FAST, FSM & ESM collection - all of which I have found with a little help from Google and the forums. Always willing to share.

No blame at all! I am usually pretty specific as well. In this case I left some slack and you picked it up.

It's all good!

i've always kept the sensors that were on the stock engine lol never had any issues