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Hi Phil,
I know you don't mind me helping you.
"I assume the car runs a little bit on starting fluid if you tried this during all the other postings."
You assume more than I do. I don't recall this being part of the troubleshooting.
"That test proves timing and spark is there and the car will run if the injectors opened."
Not quite. The injectors can open, but if the "fuel at the rail" OP claims is at atmospheric pressure, where's the fuel gonna go? Could be the injectors aren't opening, but then how is it coughing and spitting? Vacuum pulling fuel in past closed injectors? Through a holey FPR diaphragm?? No, I don't think the assumption that the injectors aren't working is convincing. How about checking fuel pressure?
"You can also wrap a rubber band around both of the contacts arms and bypass the ECU to see if the car will run through the relay."
OP's test showed there was battery at both 87/1 and 87/2 which Michael found during his execution of "step 1" of "To test main relay" on 241-11 of Bentley. Step 1 says "If either terminal has no voltage, go to step 2." In his last thread I asked why he was doing step 2 at all, but there was no answer. The relay is OK. In fact that's exactly the wording in the Bentley. "The relay is OK."
"When using either tool you need to remember that you have to be ACROSS the line of potential voltage in order to read voltage. "
This is true, like when you try to verify a contactor's coil is being energized, but in Bentley's test (step 2 where one tries to troubleshoot a relay that is NOT OK) they are looking for a voltage referenced to ground by asking to check for "battery voltage." Not for a lighted test light. But their troubleshooting steps 3 and 4 are in error, which I believe we identified in the Bentley Errata list. However it is moot, since "step 1" already verified the relay didn't need troubleshooting.
The devil's in the details. The paraphrasing OP did doesn't accurately represent Mr. Bernstein or Mr. Bentley, and the assertions of "spark at plugs" and "fuel in the rail" don't lead me to assumptions like "Fuel injectors are not injecting."
Yet, if I were to read "fuel pressure is 43 psig" and "the 'noid light remains dark" I'd ask about what that 1985 engine harness looks like. CB suggested the problem solver hinted at ECUs having a reputation for losing injector driver transistors, and if so, with the LH2.2 boxes, I'd guess this could be why.
--
Art Benstein near Baltimore
Always keep your words soft and sweet, just in case you have to eat them.
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