Okay guys so I swapped a b20b4 into my ek ran fine when pulled out of crv I pulled it out but now it doesn't on cold start up it'll start right ip and kinda stutter at idle but not bad well as soon as it's up to temp the motor just stalls and dies and won't run unless u give it throttle or I'll sit there a fluctuate like it's got a vac leak I've checked everything for vac leaks can't find a single one I'm running a ls intake with manual throttle body I can hear the iacv hum when keu is on before I start it there's no fitv on this motor it's in time and compression is good and I've replaced fuel filter and fuel pressure regulator I'm out of ideas oh yeah I'm also running a obd2b to obd1 jumper to a obd1 P75 any help would be appreciated thanks guys!

 

Anyone??

 

If the harness is for a car originally having a 3 wire IACV you have to move wires in the OBDII ECU plug to make it work with 2 wire.

If that is the case you will have the IACV circuit code (14) thrown by your OBD1 ECU. Are any codes set?

 

I have no idea how to check if there is there's no cel on and I have already repinned ecu plug and converted the plug from 3 to 2 wire

 

And the iacv makes like a humming noise when car is running thru intake tube and if I shut car off and just have the key to on it will sit there and hum thru intake tube not running

 

What ECU are you using

 

I have a obd2b to obd1 jumper with a obd1 p75

 

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