For all you lovers of your 4Runners who are as anal as I am about keeping it running in top shape, I thought I'd post some info on when to check things and what to check. A lot of it is straight out of the Haynes Repair Manual:

Weekly:

-Oil level and condition
-Brake and clutch fluid
-Engine coolant

Bi-weekly to monthly:

-Tire pressure
-Windshield washer fluid

3 months (or 3000 miles):

-Auto tranny fluid
-Power steering fluid-
-I rotate my tires every 3 months (BF Goodrich All Terrain TA's) but most people wait for 6 months
-Check air filter

6 months (or 7500 miles):

-Battery condition
-Underhood hoses
-Check suspension and steering components
-Lube the chasis components (steering knuckle, slip yokes, u-joints)
-Check exhaust system
-Check transfer case and differential fluids
-Check idle speed

12 months (or 15,000 miles):

-Check driveaxle boots
-Check PCV system
-Replace the air filter (or clean and re-oil your aftermarket one)
-Check engine drivebelts
-Inspect fuel system
-Check brakes (clutch pedal, if applicable)

24 months (or 30,000 miles):

-Replace spark plugs
-Check valve clearance
-Replace the fuel filter
-Check spark plug wires and ignition system
-Flush and refill the cooling system
-Inspect and repack the front wheel bearings
-Change auto tranny fluid and filter
-Change manually tranny fluid
-Change transfer case fluid
-Change diff fluid

48 months (or 60,000 miles):

-Check emissions control system
-Check EGR valve
-Replace timing belt

Finally replace the oxygen sensor every 80,000 miles or sooner, depending on the road conditions you drive in.

Hope this helps.

Al

 

QUOTE:Finally replace the oxygen sensor no more than every 80,000 miles.

You mean don't let it go more than 80,000 miles? The older they get the slower they are to react to changes in mixture.

 

Hrmm...yeah. Wording was kinda screwed up. Replace it at least every 80,000 miles, if not sooner.

 

I posted a suggestion for changing the P/S fluid .... tapping into the rack and pinion somhow....any suggestions?? would like to get new fluid in there the right way.

 

IMHO the PCV valve shoud be replaced during regular maintenance checks. Go out and replace it today. Its all of $2.00!

O

 

Hrmmm.. If it's that cheap I agree. I'm going to change mine for the fun of it. I don't think it's ever been replaced.

 

The PCV valve is definitely cheap but a royal PITA to change out on a 3.0 V6.:mad:

 

For a 99 3.4L V6 4Runner 4x4, I was told by the dealership to replace the timing belt at 100k miles.

I might replace it now (60k miles) just because I'm doing everything else (plugs, belts, fluids, filters).

What do you all think?

J

 

I would change ANY fabric timing belt at 60K miles. Lots of engines don't survive a freeway speed failure of the belt.

Are you sure they said 100K????

 

Yes, I called and the master technician told me not to worry about the timing belt until 100k miles.

Since all the literature I've read (repair manual, online toyota maintenance schedules) mentions to REPLACE it at 60k miles, I question whether the technician heard the question correctly (since he seems to be right about other maintenance questions).

Anyways, I'm already replacing all the belts and fluids and it isn't much more work to replace the timing belt from what I've read.

Does the supercharger need any maintenance at 60k miles? Fluids?

J

 

i need help replacing my belts. this is the first time i've replaced my belts myself and i can't find the pivot bolt for the power steering and the a/c belts. i got the alternator belt off the pulleys okay, but then i saw that i have to get the a/c and the power steering off first. erghhhh. someone help pleaseeeeeeeee.

 

I replaced mine at 90k. I believe every 'major' (30k) tune-up calls for inspection of the timing belt. Generally it doesn't need to be replaced until about 90k. So 100k isn't that big a stretch.

Besides, the 3.4 is not an interference design, so breaking the t-belt doesn't cause engine damage. It'll just leave you stranded.