Check Engine and noisy belts in the hood

All the Acura motors listed in my book show a chain. The water pumps are driven by a serpentine belt. Water pumps only need changing when they leak out of the drain ho0le underneath or become noisy from failing bearings.

run fault codes and check for cam/crank position sensor faults . Check that the cam shaft is turning ( broken timing belt/chain) check that the immobiliser is operational.

For the Acura RSX 2.0 engine to replace valves you need to remove cylinder head.if you talking about timing chain you have to support engine to remove timing cover to replace timing chain and tensioner.

Stop using it & have the water pump &
timing belt replaced

The TSX, RSX, RDX, models have chains. MDX 3.7L, RL 3.5L, TL 3.2L, TL 3.5L, ALL have belts. You did not specify your model #. Hope this helps.

yes

There is no timing belt on the K20. It's a Chain.
the Belt you see is only the Serpentine Belt. It's attached to a Crank pully so it'll turn the pullies on the AC and Power Stering Pumps, and also the Alternator. This is NOT the "timing belt" as it has nothing to do with the timing or running of the engine.
visit www.clubrsx.com for more information and forums to solve your problems.

Regarding the heating issue, sounds like your thermostat is stuck open so the coolant isn't heating up. (May need replacement) Does your engine temp guage show it running colder than normal?

Hi robrtsn,
As you forgot to say what the engine is in your 4-Runner....I'll give you the rule of thumb....if you have a timing chain in your engine, you'll need to check it only if it becomes noisy....If you have a timing belt, the manufactures recommend that it's replaced every one hundred thousand kilometers.....thats about sixty five thousand miles.... I believe that the later vehicles...(those with the electronic odometer fitted) have been extended to one hundred and fifty thousand, but to be on the safe side, I'd replace at one hundred thousand, especially with the number of sub standard parts that are available on the market these days....

Hope that's a help

Best regards Johngee10

The buckle and belt need to be replaced.  They are only good for one time during a collision.  The buckle has an explosive charge in it that causes the buckle to pull back toward the seat.  The belt does the the same.  It locks up during an accident, also so body shops can't try to reuse it.  The SRS light will stay on until they are replaced.