1999 Toyota 4Runner — payload sticker changed my whole truck-shopping plan

I'd want a measurement, not a hunch. Swap the cheap/easy piece first on the 1999 Toyota 4Runner and see if the fault moves. You'll know quickly if you're on the wrong tree. Had a similar mess a couple years ago and that's what finally sorted it. If this is nothing, great. I want that in data.

If it were in my driveway, swap the cheap/easy piece first on the 1999 Toyota 4Runner and see if the fault moves. Save the big job until that test fails. Post the numbers (or the code) and people can get more specific. I'd sleep better after that step, even if it finds nothing. I'd rather look cautious in this thread than stuck later.

This is usually cheaper to test than to guess. Move a coil or plug on the 1999 Toyota 4Runner if it's cylinder-specific and see whether the code follows. If the cheap test changes it, stop and reassess. This is from a 1999 Toyota 4Runner in Dallas. Not gospel, but it saved me a headache. This is me being the wet blanket on purpose.

Ask what changed right before it started. Swap the cheap/easy piece first on the 1999 Toyota 4Runner and see if the fault moves. That's the branch I'd chase this week. I'd want that in writing, not as a promise. Make the next action something you can finish this week. Might be overthinking it, but I'd rather overthink than overspend.

Intermittent stuff lies if you only catch it once. Loaded-suspension checks on the 1999 Toyota 4Runner catch play that a wheels-hanging inspection misses. If the cheap test changes it, stop and reassess. On “payload sticker changed my whole truck-shopping plan,” that was the fork that mattered for me. If it doesn't change the out-the-door or the repair estimate, it's noise. If it repeats twice more I'll book time.