Skip to main content
Topic: 87 3.8l ISC Help (Read 1145 times) previous topic - next topic

87 3.8l ISC Help

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.

87 3.8l ISC Help

Reply #1
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.

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp

87 3.8l ISC Help

Reply #2
So I have to recheck I might have counted flashes wrong..

12
81 repeated twice
82 repeated twice
78
68

87 3.8l ISC Help

Reply #3
All the codes repeat twice. So is it a 78 or 68?

87 3.8l ISC Help

Reply #4
I'll get back to you. So all the codes repeat right after themself? I'll test after the drive home.