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97 Laurel Ecu Help

stefankahn

By stefankahn,
in Engines & Forced Induction

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stefankahn Rookie

stefankahn

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Posted (edited)

Hey guys, im new here >_<

Picked myself up a 97 c35 laurel with a Rb25De+t in it

Its all been done proper but the dude ran out of money before he could get the ecu chipped and tuned.

Its currently running a c34 rb25det ecu (not ideal i know but atleast its drivable)

however it has 2 interesting issues.

The first being that it does not idle... at all seems to have no idle control even tho the ACC valve is there and plugged in.

The other being that when the engine is turned off it simply keeps runing untill it stalls and all the engine related systems continue having power, however anything connected to the Key's acc power is switched off as normal.

So the facts are,

Standard rb25de loom (altho has plugs for boost sensor and canister purge :cool: )

matching engine eg series 1 engine and loom (but not sure what series it is.

Rb25det ecu from c34, assuming that its series 1.

I think that the idle control wires and power wire needs to be swapped but unsure of which wires they are.

any idea's/ help would be muchly appreciated :banana: i'd love to be bale to drive this normally untill i can afford a tune.

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Edited by stefankahn
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https://www.sau.com.au/forums/topic/317153-97-laurel-ecu-help/
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stefankahn Rookie

stefankahn

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find the wiring diagram for the ecu in your car and check it

the main things to look for would be the ECCS relay to make the engine shut off, check how that is wired in etc

I havent been able to find the right one, closes was an r34 series 2 diagram from here :cool: and that lovely service manual.

Could it possibly be the ecm & ign relay control signal wire?

also the loom hasn't been touched as of yet

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