Dist reference signals?
Thread Starter
Instructor
Joined: Jun 2003
Posts: 176
Likes: 0
From: Columbia SC
Dist reference signals?
OK, been slowly going through all the systems. Now I am back to the distributor. Car runs rich still. Idle doesn't increase with AC, but it does dip for a second when AC is cut off and then it seems to hunt a little. Measured at the ECM terminals for the distributor outputs. EST signal on white wire should be 1.3 V running, I'm getting 2.25 - 2.35. Reference (purple/white wire) shows up at 2.56 V, manual states that it should be 1.3. Bypass wire (tan/black) has reading of big fat 0, should be 4.5V. I have replaced everything in the dist. but the pick up coil. Trying to put off replacing ECM until after everthing else has been gone through. Any suggestions or insight would just be outstanding at this point. Thanks.
Thread Starter
Instructor
Joined: Jun 2003
Posts: 176
Likes: 0
From: Columbia SC
Re: Dist reference signals? (loflyin)
Come on, guys, don't force me to go to the dealer - they screw it up every time. I only post when I am out of ideas, or don't want to risk a couple of hundred bucks on a hunch. I'm sure all can relate. Thanks.
