2.3 DOHC motor - correct operating temp

[fixkick]

https://fixkick.com/ECU/18L/18LiterECU1.pdf


here is the sport
if nothing else the wire color are good.

SMP TOP SENSOR MAKER THE 1998 SPORT.  TS-423 (SMP #)
HAS 3 PINS.  ( A dual sensor, the casing  is ground and others are ECT for PCM and temp sensor for cluster in 98 sport.)


FSM data J18

the old PCM (ECU turns on the engine fan at 208deg F; (DATA j23 sedan, not j18 but is clue to when to do so... so i looked that up.)
the ect pins 1 and 2 , voltage ranges , .55 to .95vdc ( .55 is hotter end) RTC reverse temperature coefficient thermistors  hot = lower voltage , lower ohms.
that narrow range is only for 180f thermostat spec, 176 to 212f.  The stat is 100% open at 203F. (more data j18)

found a real Suz, FSM for J18 in my deep archives. (2007 DVD-r burned )
found the chart. in ECT I did., The PCM on J18 , need to have real J18 sensors not J23.  The PCM makes the rules not me.
here
all are here 4+ new JPG added.

https://imgur.com/a/zOg7oHQ?



AND  FITS OTHER CARS IN THIS LIST. SMP.com DATA:
Chevrolet Metro (01-98)
Chevrolet Tracker (04-99) (i have the book on this, FSM, will look this up, today) this can help source parts, for hard to  find suzuki parts.
Geo Metro (97)
Pontiac Firefly (98-97)
Suzuki Esteem (02-95)
Suzuki Grand Vitara (05-99)
Suzuki Sidekick j18 (98-96) 
Suzuki Swift (01-96)
Suzuki Vitara (04-99)
Suzuki XL-7 (06-02)


my Excel data is here. (microsoft Exel must be loaded) note how close I got the curves matched, (a true logarithmic sensor it is and RTC type)

https://fixkick.com/sensors/ECT/ect.xlsx


i finished the IMGUR page for you , check it out.

if engine is too hot,  key off.
carefully, unplug ect connector and use an ohm meter (dmm turned to R1 range) see 300 ohms then good, if read why lower say 190 or 150 ohms then
1: engine really is too hot or
2: wrong ECT sensor used,  only J18 sensor will work, with J18 ECU, 1996-98

the ECU has its own ECT table in the firmware of the ECU, using the wrong sensor, renders that Useless. <<<< this is a key fact to know, if doing any engine swaps.
same with using wrong MAF, wrong IAT, wrong TPS.

as we say , in the end, one must make the ECU/PCM happy.

good luck to you and break a leg( god speed) cheers.

if you  want the fsm J18 ,then pm me your email and will send link to it free. 11MBytes sized Sy418 = sport. (it has sy413 and sy416 too inside) engine controls only.