03-19-2003, 10:43 AM
Well several hundred dollars later, lots of new ground wires and Im still not getting spark from the coil, at intermittent times!!!. This causing the car to stall in inopportune times. WHAT gives the coil the go-ahead to create a spark?? Or in other words, what is the order of operations here...
Is it Hall Sender ---> ECU--->IGNITION CONTROL UNIT---->COIL??? Im having a tough time diagnosing the problem here...and dont have a Bentley..
03-19-2003, 10:48 AM
<center><img src="http://pictureposter.audiworld.com/35433/ignition.jpg"></center><p>Why so expensive!!!??
03-19-2003, 11:23 AM
I don't think they go bad often, but they do once in a while. Is the car running? Can you drive it?
You may also have a crack in the ignition switch module. Take a look at that when you get a sec. Its in the steering column where you put the key in.
03-19-2003, 11:51 AM
The car runs fine, then will just quit without notice. I fiddle with the wires under the hood for a while, and it starts and goes for days....then boom, it happens again. I have replaced ground wires to coil, the bracket the coil itself is attached to...Something is preventing the coil from firing...just have to figure out what it is..Grrrrrrrrrr
03-19-2003, 03:21 PM
I had a problem similar to yours a couple months ago with my 87 CGT. It would die occasionally at intersections and buck for miles after I hit the slightest bump. I traced the problem to the ICU ground wire, spliced in a new wire, and have had no trouble since. From what I can tell, the ECU has no influence over the spark in K-Jetronic systems, although it does receive a signal from the ICU and adjusts fuel delivery accordingly.
Afterthought: negative terminal #14 on the coil runs to the fuel pump relay's kill switch. If this wire were loose/bad it would cut the gas, which would kill the spark, cut the gas kill the sparkcutthegaskillthespark....Catch 22 situation