hay guys new to site have couple questions, i have a odb1 gsr swap and my idle is messed up, when going into neutral the rpms will stay at 2k until i stop then bogs down and almost dies, weird thing is that if i stick my foot behind gas peddle andl ift up my idle comes up to 750 and stays there, i have already cleaned the iav and throttle body, question is i have a obd2 p72 and if i use that ecu my idle is perfect and not rough, my obd1 ecu is p28 on chrome, im wondering if it wod be fine to use the obd2 ecu on obd1 swap? any insight would be appretiate....

 

check your throttle cable tension?

 

its not very tight, its weird tho with the p72 it idles great but wit the p28 it sucks, jus wondering if its safe to use the obd2 ecu on a obd1 swap

 

anyone have any opinons, open to try anything to fix the problem

 

check ur codes on the ecu some kind of input is missing thats why its doing that

 

i have no codes on the p28, and jus my o2 sensor codes come up with the p72 in

 

gnite bump

 

bump

 

help