3rd Gen 4Runner Pre-Purchase Checklist: What to Check, In Order

QUICK ANSWER: Inspect a 3rd gen 4Runner in this order: frame rust first, transmission fluid condition second, lower ball joints third, cooling system fourth. A truck that passes those four is worth buying almost regardless of cosmetics; a truck that fails the first two is a parts truck at any price.

The order matters more than the list

Most buyers inspect a used 4Runner in the wrong order — they start with what is easy to see, which is paint and interior, and they get emotionally committed before they look underneath. Reverse it. Check the things that can end the truck first, and only look at the nice-to-haves if the truck survives.

Bring a flashlight, a paper towel, and clothes you can lie on the ground in. If a seller objects to you getting under the vehicle, that is your answer.

The four that decide it

1. Frame. Rear control arm mounts, around the muffler, and the rails from the cab back. Tap, look for flaking and bulging, and treat perforation as a walk-away. Full detail in our frame rust guide.

2. Transmission fluid. Pull the dipstick onto a white paper towel. Clear red is good. Pink, milky, or foamy means the radiator's internal cooler has failed and the transmission is likely finished — see the pink milkshake guide. This single check can save you a five-figure mistake.

3. Lower ball joints. Rock the wheel at twelve and six, inspect the boots, and ask for records. Undocumented means assume they need doing. See our ball joint guide.

4. Cooling system. Is the radiator original? The factory olive-green plastic-tank units do not last. Look for an external transmission cooler as a sign of a thoughtful previous owner.

Questions worth asking the seller

When was the timing belt last done? On the 5VZ-FE this is a real interval, not a suggestion — our timing belt guide explains why.

Has the radiator been replaced, and is there an external transmission cooler?

Any records on ball joints, and has the truck ever been to a shop for front-end noise?

Where has it spent its winters? A truck from a salt state is not automatically disqualified, but it changes how carefully you inspect the frame.

Which years are you looking at, and what changed between them? Our best year guide and year and fitment guide cover the differences.

What does not matter as much as people think

Mileage. A 220,000-mile truck with a clean frame and documented maintenance is a better buy than a 130,000-mile truck with rot at the control arm mounts.

Cosmetics. Faded paint, a cracked dash, and worn seats are all fixable and all negotiating leverage. Frame rot is not fixable at sane cost.

Once you have found a good one, our mod order guide covers what to do first, and everything we build for these trucks lives in the shop.