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Phil, you're my favorite modern era philosopher! Bravo and well said my friend!
It may be very lean, but the #3 and #4 ppl plugs are very dark #1 and #2 are better, but not perfect.
I've sprayed starting fluid all around the intake gasket from every angle, saturated everything there, and the AMM feed hoses to the throttle body, and other hoses. I feel 100% that there are no vacuum leaks.
I'll check the spark coil relay.
The 310 ohms is the readings I get on the NGK wires I bought from IPD. I've checked my meter with a 1% reference resistor, so I assume my readings are good. Today I swapped them with a new set of Bremi Germany wires that read 6k ohms each and 1k ohms on the coil to cap. Same results, rough running.
My local Indy Volvo guru shop thinks it must be the ECU. He's going to let me test one in the car to see.
Other than the spark relay, I feel I've covered everything I can think of. Please keep the ideas coming! Thanks so much!
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