As Ray said, datalogs would help a lot. Something simple you can do is select any window other than rpm in the keypad and leave it there while you're driving. If the car cuts out, look at the keypad before you turn the key off. Is it still in the window where you left it or is it now in rpm? If rpm window, it means you have rebooted, so start looking at power and grounds. Wiggle tests can help, as can a multimeter that gives you max/min measurements so you can drive with the meter on say the 12v supply and then look at the meter if the car dies to see if you have lost the 12v.
Bill Cardell TurboDog's Dad Flyin' Miata 1-800-359-6967 (sales) 970-464-5600 (tech support) www.flyinmiata.com www.fmwestfield.com ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Eric McCord Sent: Tuesday, June 07, 2011 12:53 AM To: List, Miata Power Subject: 91 Link FM2 cutting out and surging..... ok.....I finally got my 91 back out on the road. I have the WB02 installed and all seemed well on the drive into work (35 miles). No surging at idle and no cutting out while driving. When I started home after work the ECU drop outs started and the surging is back. I had the Link out earlier and checked for cold solder joints....none found. I reseated the chip and checked all the connections at the ECU. What could cause both the hunting for idle and dropping out the ECU causing the engine to die? I am thinking a ground problem, but I wanted to float this out to the collective to see if there is some other explanation. Eric
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