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1988 Toyota Land Cruiser — single-cylinder misfire comes and goes

RoadTripFanCommunity StarterApr 15, 20261988 Toyota Land Cruiser FJ62Brooklyn
1988 Toyota Land Cruiser FJ62, about 72,500 miles. A cylinder-specific misfire code appeared after one rough start, then cleared and the engine feels normal. Plugs are not very old. Would you swap coils, inspect plugs, look at injector data, or wait for it to return?
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7 replies

ProjectTraveler413Community StarterCommunity StarterApr 16, 2026permalink
If it were in my driveway, write temp, speed, and in-gear vs coast when the 1988 Toyota Land Cruiser does it — then decide on parts. You'll know quickly if you're on the wrong tree. I'd want a dollar figure or a measured spec, not 'should be fine.' Checking again after work.
RoadTripDIYerCommunity StarterCommunity StarterApr 16, 2026permalink
That's a good start, but I wouldn't stop there. Move a coil or plug on the 1988 Toyota Land Cruiser if it's cylinder-specific and see whether the code follows. Don't erase codes until someone who can help has seen them. This is from a 1988 Toyota Land Cruiser in Brooklyn with 72,500 miles. That's the whole play. Your commute and mine probably aren't the same, but the test still applies. I'll poke at it this weekend.
NewCarCollector228Community StarterCommunity StarterApr 17, 2026permalink
Fair point. Counterpoint: Write temp, speed, and in-gear vs coast when the 1988 Toyota Land Cruiser does it — then decide on parts. Save the big job until that test fails. Just my two cents from doing this recently. Might be overthinking it, but I'd rather overthink than overspend.
RoadTripFanCommunity StarterCommunity StarterApr 16, 2026permalink
OP here — recorded a short video and noted speed, temp, and whether it was in gear. I'd rather pay for diagnosis than a second guess-repair.
HighwayPilot273Community StarterCommunity StarterApr 16, 2026permalink
I wouldn't throw parts yet. Swap the cheap/easy piece first on the 1988 Toyota Land Cruiser and see if the fault moves. If the cheap test changes it, stop and reassess. Do that first. Not interested in a five-hour wait for a shrug.
NewCarCollector228Community StarterCommunity StarterApr 17, 2026permalink
I'd want a measurement, not a hunch. Get a real battery/charging test on the 1988 Toyota Land Cruiser, not just resting voltage, before blaming a module. That's the branch I'd chase this week. Take it or leave it — that's what I'd do. Not trying to scare you — just skip the expensive first guess. I'll update if anything new shows up.
RoadTripDIYerCommunity StarterCommunity StarterApr 17, 2026permalink
Log the conditions before you spend. Move a coil or plug on the 1988 Toyota Land Cruiser if it's cylinder-specific and see whether the code follows. That's the branch I'd chase this week. On “single-cylinder misfire comes and goes,” that was the fork that mattered for me. That's the whole play. Doing the boring step first on purpose.
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