Had my car tuned with Mechman set at 15.5V at battery. Drove it about 200 miles, no issues at all. Transplanted eng/trans/etc into my wife's 95 VR4. Same electronics (AEM/HKS DLI/MSD coils/ptu/etc/etc) but new Taylor ignition wires. All well for about 100 miles. Started blowing "Engine" fuse in panel by driver's leg. Eventually had one of the MSD coils break open. The coil looked like it had expanding foam sealer coming out of it. Thinking the culprit was excessive voltage/heat (and possibly some issue from my wife painting the MSD coils black), I put a stock coil pack and stock wires in and adjusted the voltage down to 14.6.
All is well...........sort of. As long as outside temps are below about 85 degrees, no problems. AC puts out about 30-35 degree colder air than ambient, down to about 54 degrees. But when outside temps get above 90 degrees and the AC is on.....different story. Under these conditions, the car stalls when the clutch is pushed in to stop. The idle is SOMETIMES unstable. And driving on the Interstate at 100 degrees outside temp with AC on, the temp gauge steadies out about one division above normal and the car feels like it has an intermittent plug miss. Dropping to 65 solves the temp issue, but the intermittent "sluggish" feeling remains. Turn the AC off and all is well again. I've swapped out coil packs with no change. Disconnected the HKS with no change. I only have three days before I leave for Indy with this car and I would REALLY like to have this resolved before I leave. Replacing components on the side of the Interstate would not be fun. HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!
Stock: 12.5-14.4
NGK: 7.7-8.8
Accel: 0.40-0.44 (These were on the car during tuning)
Tayor: 0.40-0.42
I'm wondering how much impact the higher resistance stock plug wires may be having? Even if they were new? Which they definitely are not.
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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