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Disconnected plug wires 3 and 5, (which R/LB is said to control) with zero change in idle quality.

I ohm tested all wires from the coils to the pcm and everything was good, Ive checked the coil driver wires with a volt meter on AC hertz mode and all wires show a on/off pattern except R/LB on coil number 2. I ohm tested and continuity tested the wire to the pcm plug and all was good for that...

1997 5.0 explorer. Everything was going good, I accelerated through a yellow light and coasted into a parking lot and when the engine rpm got down to idle speed it started missing. Pulled it into a parking spot the misfire was constant, went inside and got the shopping done came out and it...

Did plugs and wires, tested fuel pressure and it was at 40psi, I changed the fuel filter and tested agains still got 40psi. I'll let you know if this fixed the startin problems.

Thanks I will check that out. It hasn't done it agains since that one day, I know it needs plugs and wires, which I've already ordered.

I've never had a hard start problem after it sits overnight. If that helps narrow it down.

I'll be sure to check these things at each start up incase it acts up again. I need a fuel pressure tester, anyone recommend a good one?

Recently bought a explorer for a new dd, it usually requires around 2 seconds of cranking to fire. But once started runs like a dream very smooth and no hiccups throughout acceleration. However yesterday I drove to the store was inside for around 10 minutes came back out and it cranked but...