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The reason i ask is when i did a rb25det and now a rb26dett conversion into my C35 Laurel is does not cut the ac at high rpm/load etc.

I am thinking the ecu for the particular engine cuts the signal to the ac compressor when it sees fit but apparently there is some other circuit that it needs to pass through???

Maybe only skylines has this circuit in the ac system????

On the ecu pin out there is the ac switch signal (pin 46) and ac relay/ ac cut signal (pin 9) that goes to a triple pressure switch thingy....

Can anyone tell me how i can get this feature to work?!?!

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  • 2 weeks later...
Do skylines switch off the ac compressor at high rpm??? Particularly the Rb25det equipped ones.

If so at what rpm does is switch off and then come back on???

Thanks

ooops...look like sau is givin some trouble :)

yes on the R34 GTT it cuts the compressor out under heavy engine loads, (ie flooring it). don't know the exact cut off but it tells you in the service guide the exact numbers

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  • 6 months later...

I think we are on the same track. When i rev fast like push the pedal to the max it could go to 6k rpm on the first gear. Then the power cut off and it felt like as if i pushed the brake so hard. O_o

If i put on nutral and contantly rev harder it would go up to 5K or 5K+ a bit then the power cut off again and nothing i could do but to just watch it dropped down to about 3.5k rpm then i could rev again.

This is really weird. Can anyone help me please? :huh:

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I think we are on the same track. When i rev fast like push the pedal to the max it could go to 6k rpm on the first gear. Then the power cut off and it felt like as if i pushed the brake so hard. O_o

If i put on nutral and contantly rev harder it would go up to 5K or 5K+ a bit then the power cut off again and nothing i could do but to just watch it dropped down to about 3.5k rpm then i could rev again.

This is really weird. Can anyone help me please? :huh:

Totally different track Charlie.

Your problem can be identified using "Search"

re: coil packs, plugs, ignitor, looms, fuel pump and so on.

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