Heres the problem. I have a 91 LS in an 88 HF. The car is OBD1 running a dx ecu and 1.5 distributor just so i can drive it for a week or two . I also have no resister box and no plug for it ? It starts up "ok" then idles really low for a few secs, then idles normal, after about 20 secs it just bogs and dies. I am missing 1 plug in the back of the block. But everything else is plugged in and grounded. Any ideas

 

I dont understand you say your 88 is converted to OBD1? Is this right? I am pretty sure the HF have resistor boxes and if not you will have to get one. I am pretty much lost on theis subject I dont understand what you have going on

 

I know man, Im confused my self. Yes my 88 hf is converted to obd1. Im using a 88 Si engine harness though. I have no resistor box plug either ?? I dont understand. This car is just a wiring mess it seem slike from the previous owner. Does anyone have any ideas ? Like swapping everything back to obd0 maybe ?

 

UPDATE: The son of a bitch wont even crank over now!!! WTF is wrong with this thing ? Im so lost on this car right now previous owner sucks!

 

If the harness is 88 then it should have the plug for the resistor box. On the drivers side of engine bay close to the firewall. Did you convert the car to OBD1 or the pervious owner. B/C i think OBD1 does not use the resistor box. WHo knows are you using some kinda ECU jumper to allow you to use a OBD1 ecu? What year DX ecu are you using and are you sure it will work? And what about the dizzy..DX??what year?I am still kinda confused.