I have an 89' crx dx with a obd0-obd1 adapter and im running an AEM EMS 30-1000 box.. When I look at my sensors on the laptop they are jumping around alot weather the car is running or not..

The tps moves from 0% to about 3% very quickly and just jumps around in that range.. Other sensor are freaking out in the same fastion including the map sensor, tps sensor, ait, coolant temp, ect..

The car is running like crap at idle and sounds like it is missing alot..
When I drive the car is runs good except above 7K rpms it starts to miss.. When I watch my wideband, If I set the air/fuel at idle to 11:1 it will idle much better but trying to get leaner than 13.5:1 will cause it to miss and die..

Also the coolant temp is moving between 200F-230F while my Stewart warner water temp gauge is showing 190F.. Both the SW temp sensor and the oem sensor for the ems are right next to each other in the head..

I did modify my harness but I checked everything and it looks good, anyone want to give me a place to start to fix the problems.. Thanks..

 

Update with this.. If I unplug my IACV valve then the jumping of the sensor readings goes away.. Would a bad IACV cause this?