87 3.8l ISC Help December 08, 2018, 05:32:20 PM I've done some research here and can't get a straight answer, I installed a new ISC on my car because its chugging, and has random loss of power, running rich etc... When I put the car into test mode I hear buzzing and clicking for a second but the ISC doesn't retract so that I can properly adjust it, as far as pulling codes my test light wouldn't fit into the port so I have to wait until I get home.. Few things I've read it could possibly be: bad EEC(bad ground, no power etc..), possibly a failed TSP? Just want to get my ducks in a row here, try and diagnose correctly instead of throwing parts. Any help is appreciated, thanks everyone. Quote Selected
87 3.8l ISC Help Reply #1 – December 10, 2018, 10:20:47 AM I think you are going to have to run codes before anyone will jump on the grenade. If it runs then limp it up to a parts store and have them put a scanner on it. Quote Selected
87 3.8l ISC Help Reply #2 – December 11, 2018, 04:13:13 PM So I have to recheck I might have counted flashes wrong..1281 repeated twice82 repeated twice7868 Quote Selected
87 3.8l ISC Help Reply #3 – December 11, 2018, 05:34:16 PM All the codes repeat twice. So is it a 78 or 68? Quote Selected
87 3.8l ISC Help Reply #4 – December 11, 2018, 06:57:55 PM I'll get back to you. So all the codes repeat right after themself? I'll test after the drive home. Quote Selected