1999 Toyota 4Runner — intermittent hesitation pulling away from a stop

Start with the test that can prove you wrong. 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. Take it or leave it — that's what I'd do. If it repeats twice more I'll book time.

Ask what changed right before it started. Get a real battery/charging test on the 1999 Toyota 4Runner, not just resting voltage, before blaming a module. Save the big job until that test fails. Not gospel, but it saved me a headache. Checking again after work.

Log the conditions before you spend. Get a real battery/charging test on the 1999 Toyota 4Runner, not just resting voltage, before blaming a module. Don't erase codes until someone who can help has seen them. On “intermittent hesitation pulling away from a stop,” that was the fork that mattered for me. Not gospel, but it saved me a headache. Next check is the cheap one I can do in a driveway.