Periodic power loss to ignition on 2000 Tundra.

remove remote start and clear the no start problem first.

https://www.justanswer.com/toyota/5do8v-toyota-tundra-sr5-2000-tundra-changed-battery.html

Question edited for clarity.
Question moved to model category.

Check the link

https://www.google.com/search?q=2000+Toyota+Tundra+4.7l.+ignition+control+module+location

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Toyota Tundra Maintenance & Repair Questions - CarGurus

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CarGurusfrustrated2000tundra asked a 2000 Toyota Tundra 2 Dr SR5 V8 4WD Standard Cab LB Maintenance ... My 2000 tundrasr5 4.7l 4x4 wont start! ... 2008 Toyota Tundra ...won't Start ... Report. rckwll asked a 2001 Toyota Tundra Maintenance & Repair question 2 months ago ... 2002 Toyota Tundra Turns Over But Will Not Start.

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CarGurusGet fast answers to your Toyota Tundra questions from experts in the CarGurus automotive ... My 2000 tundrasr5 4.7l 4x4 wont start! Thought wasn't getting fuel because tries to turn over but wont. ... Tundra Dead Battery, How Do I Open The Door Or Hood To Recharge? ... 4wd Hi Light Flashing, But Will Not Engage.

HVAC post?
the Heater fan motor is dead on high?
the Cluster gauges and warning lamps are all dead?
what is dead, and what is not?
power loss, engine power,
do check all fuses first. in both boxes
if fix the fan first. he heater fan nust work on high.
if not fix that. its very simple and if you fix that,there is a good chance
other things start working
the #1 thing to fix first is headlights or parking lamps dead .
as these all work keys in pocket. and is an easy fix.

Sounds more like ignition switch to me.

This might help! But only possible solutions! Hope all works out! Also the video doesn't say but keep fuel pump and fuel filter in mind!

Change the spark plug wires.

Doubt it is the Battery Cable, even with some corrosion

You do a Voltage Drop test on Cable before you remove
to examine or replace

Put Volt Meter probes on both ends of cable & see if
you drop more than .02 Volts,then it is either bad inside
or the ends need cleaning

Check Fuel Pressure. That is a more likely cause of the slow
to start or weak ignition spark

You can switch ignition coil to the other cylinder to check if the misfire follows that pack. Or check for ohms.

Does this motor have the equivalent of crank-trigger ignition? If so, is the sensor A-OK?