Temperature sensor EA82 to EJ22

robdddd · Post by **robdddd** » Fri Aug 25, 2006 12:17 am

What do most people do about the temp sensor which was mounted near the thermostat of the EA82 for the dash temp guage when doing an EJ22 conversion?

I was thinking of either drilling and taping to install it in the aluminium outlet pipe just near where the radiator hose connects but the wall thickness could be an issue, or simply drilling a hole and putting a lock nut on the inside of the pipe.

There appears to be a temp sensor for the EJ22 near the inlet connecting to the ECU, is it possible to connect into this for the dash temp guage?

bluesteel · Post by **bluesteel** » Fri Aug 25, 2006 10:33 am

the temp sensor on the ej22 end ea82 is the same as far as i know... thats what the guy at subaru parts said anyway

Suby Wan Kenobi · Post by **Suby Wan Kenobi** » Fri Aug 25, 2006 10:56 am

You can use the temp sender from the EJ motor you guage will read slightly lower in temp than what it would have with the EA sender. Alternatively you can do as you say and drill and tap the EJ hole to suit your EA sender.

wagonist · Post by **wagonist** » Fri Aug 25, 2006 12:42 pm

Dunno if ths is the same for the EJ22s, but on my EJ20T, the temp sensors (one for the dash, 1 wire, & one for the ECU, 2 wire) are on the crossover pipe between the heads which is also where the top rad hose connects to.

Because I had the inlet manifold off, I had someone aluminium weld over the top the single wire hole to enlarge it & then redrilled & tapped for the L sensor.

Its bigger than the EJ version hence the work, but its all hidden, so its not visible.

Your way would work, though I would get weld added to the outside of the pipe, file it smooth so there's a good flat sealing surface & then drill & tap for the sensor. That way it'll be sitting in the coolant flow the correct depth. This also might be doable without dismantling th engine.

Suby Wan Kenobi · Post by **Suby Wan Kenobi** » Fri Aug 25, 2006 8:55 pm

You can get the water log out without taking the manifold off but you have to take everything else off

SuBaRiNo · Post by **SuBaRiNo** » Fri Aug 25, 2006 9:00 pm

This will be of no use to you but with mine....

When i got my first EJ22 it had some sort of aftermarket sensor screwed in there which made the temp sensor read way off in my car..... having replaced the engine which now has a factory fitted ej22 sensor in it... from some stroke of luck... it matches exactly to my dash guage (bare in mind that my car has been imported from Japan so is probably different from the Aussie cars)

Dave

AndrewT · Post by **AndrewT** » Mon Aug 28, 2006 3:22 pm

The EJ sensor will work with your EA dash but will read alot lower than it did before. No problem really you just have to get used to it (ie...if its reading half then your engine is absolutely boiling).

Best way really is to adapt the EA temp sensor to the EJ engine or radiator. I beleive Aspro's L series with an EJ22 is setup in this way. His dash reads the same as a car with a standard EA82 motor.