Project Dex

i have h22a swap in my car 2000 civic si and im running a jumper conversion to obd1. well when is hit v-tech at 5,000 rpm the tach drops to zero but the car is still in motion. and v-tech dont work when that happens. let me know asap... thanks

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boostedcivicsir

ok tach drops to zero car still in motion.

foot on the gas and no increase in rpm?
swap out another dizzy.

Syndacate

I'm confused...are you still accelerating? You said the VTEC isn't kicking in, but is the car still speeding up?

Project Dex

so yeah...vtec kicks but my tach drops and cuts off like redline like a second later... but this is only when using a stock OBD1 ecu with a jumper harness. But when i use my stock b16 ecu for obd2 it runs fine and dandy

bluevic99

Are you using a obd 1 or obd 2 distributor?

Project Dex

obd 2

Ghetto Civic HX

I thought the dizzy was supposed to be the saem OBD as the ECU.

axtran

you can rewire OBD1 and OBD2 dizzy to work properly - make sure you rewired it!

bluevic99

Well I would assume that there is your problem. you are trying to use a obd2 distributer with a obd1 ecu. You can narrow that down by syaing that with the obd 2 ecu plugged in it works fine and with the jumper harness and the obd1 ecu it doesn't work. Hope we helped.

Slopoke

obd2 distributor runs fine with an obd1 ecu.

If he changed any wiring at the distirbutor and messed something up, it would run shitty with either ecu.

Sounds like a problem with the jumper harness or the obd1 ecu.