R3cK

Hey guys,

swapped a S13 SR20DET redtop in my ca18det RS13.

problem is: i dont get a correct rpm - jumping around when starting, 0 when running

- i put in a resistor -> works in my buddys car, but not in mine
- other gauge -> no
- other ECU -> no

im out of ideas.
i unplugged the dash and took new wires + / - and signal from ecu
still acting as box of shit. needle is zero or bouncing a bit an goes back to zero then.

also checked the CAS (engine running fine anyways) and got perfect ground/12V/ and signals between 0.1 and 5v as mentioned in the service book.

no fuqin idea whats wrong with my tach signal.
also tested another ECU/cluster -> same problem

2015 edit:
rewired the complete car, throw my old harness into the trash can (lower harness, new sr20 harness, and inside/bay harness)
triplechecked the pinouts and grounds.