hoses

== Check the Factory Service Manual. The procedure for checking the brake hoses is to inspect in a well lighted area with a mirror. I replaced mine when I replaced a seized caliper. Most likely was due to prior mechanics negelecting to clean and lubricate the sliding pins. At 150,000 miles the old brake hoses still seemed fine, but I did replace them anyway. There was very minor checking in the exterior covering and that's what you're looking for. On my 1977 Toyota truck I saw larger cracking in the exterior cover, so I replaced those lines, but they never leaked,Maintenance bulged or failed, and they were much, much older. Transmission coolant lines are low pressure, I can't see a reason to replace those unless you observe a problem. BTW, the factory recommendation for coolant hoses is to inpsect for crackng near the ends and softness or bulgling as part of periodic maintenance. There is no scheduled replacement interval based on mileage or age.

The replacement interval for brake hoses is 6 years and no specified mialage. The exterior examination of brake hoses is usually to late ,the intereior sleve and braid will always deteriate first with no visible external dammage. Trans coolant lines depend on the grade of hose used but for example a dot3 hose has a service life of 6 years per 1metre of hose. cooling system hoses have an AVERAGE service life of 3 years. (Australian standards) Dave

Manufacturers started recommending 6-year replacement interval (no mileage) for tires. Should automotive rubber used in hoses be that much different? However a busted IAC hose is much less likely to lead to catastrophic results so a longer interval is probably ok. If you are in the temperate zones probably 8-10 years at 100-120K miles? I would (and did) just change them out at 100K miles. Still in good shape I must say, but modern hoses don't often show the signs of the older non-EPDM ones before they fail. Even the costlier and better Gates EPDM coolant hoses are cheap enough. :)

For the bypass hoses without radical bends you can use generic Gates small diameter hoses. They are around $1 per foot at NAPA. I also changed out the PCV hose.

Make sure you specify coolant, ATF, or EVAP/fuel to your NAPA tech. They are different types.

Gates website, "the world's most trusted name in belts, hose and hydraulics":

Also check the prices on

Curious... how is a busted IAC hose less likely to lead to catastrophic results? If an IAC hose blows on the freeway... the hose is not continuously pressurized?

Is this the GATES part?

Thanks,

Michael

...

part?

Update - the local NAPA sells the hose (Gates, packaged as Napa brand) for 79c/foot.

That'll do...

Thanks everyone,

Michael