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My '94 940 non-turbo has the Rex/Regina coil. How does one go about measuring the primary & secondary resistance on these puppies? I can't find it in the 900FAQ & my Haynes 940 manual sucks.
I'm suspicious of the coil for a few reasons, but primarily a high speed miss under load (tromping the pedal).
The car was gradually acting up for my wife. Then it died but restarted after several minutes yesterday. Dead in the driveway this AM. I first suspected maybe a fuelpump on it's last leg but it seems to be ok. The FP relay is functioning properly.
After several attempts to start, I pulled a plug or 2 & they were wet, so I ruled out fuel.
Threw a timinglight on the individual plug wires as I tried to start it & 2 of the 4 were toast. So I replaced the plugs, wires, rotor & cap. All Bosch replacements with exception of the wires which are Beck/Arnley. While I had it apart, I cleaned the throttlebody, flametrap, checked groundstaps & vacuum hoses. Put it back together & had a heck of a time getting it to light up. It was acting as if the firing order was whacked. It would start, idle for a second or 2, then die. Start back up & idle real rough, backfire etc. All of a sudden it started up like a new car. So I let it idle for a bit & checked engine codes, both electrical & fuel & got back all "1's". Took it out & it ran fine except under heavy throttle. Big misses but not consistant. Checked codes, again all 1's.
I've experienced this same problem before with a coil being the culprit. I just don't know how to measure this particular coil. Thanks.
Murph
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