'89 240 w/ka24de swap overheating problem!

[ka24de89]

I swapped the ka24de combo (engine, transmission, harness, ecu) into my '89 240sx, from a running '91 240sx (with no overheating problem). Everything seems to work fine but after a while it starts to overheat! I give it gas and the needle starts to go down. I tried changing the temperature sensor for the one from the ka24e motor but it still does it. Please help!!

[tycguy]

got a question...when u swapped the sohc to the dohc...do i need a 91 to 93 wiring harness cus i have a 95 wiring harness???

[S13DrIfTmEkAnIcS]

lol my friend with an s14 just called me today with the same exact problem, we r working on it as soon as we figure it out i'll let u know

[S13DrIfTmEkAnIcS]

got a question...when u swapped the sohc to the dohc...do i need a 91 to 93 wiring harness cus i have a 95 wiring harness???

ya, the 95 harness won't work

[ka24de89]

is your engine from a s13 or s14? I used the s13 DOHC harness on my for my swap.

[S13DrIfTmEkAnIcS]

mine is an s13 with the s13 harness, an s14 harness won't work.......i dunno if i got myself confused so if i did clear it up for me lol sorry

[95nismo240sx]

u have to bleed the system theres a bolt on the housing from the feed line to the radiator. im having the same problem and i talked to a few people and theres just air in the syste

[ka24de89]

Will try that. Thanx!

[ka24de89]

that was definitely the problem the car does not overheat anymore!