Vacuum Piping-When to replace?

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Jun 15, 2012 | 12:11 AM

jpmackin

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From: Illinois

Vacuum Piping-When to replace?

Friends,
I have a 2002 LS 430 with 102,000 miles and I am wondering when, if ever, I would need to replace any and or all of the vacuum piping/air control valve assembly/vacuum control valve set...etc.,
The car is running terrific- just curious if I can improve performance/engine life. I love
working on the car when I can do it myself.
I have included a link to the vacuum piping ordering diagram from Sewell Parts for reference.
Thanks,
JP

Jun 15, 2012 | 12:33 AM

Dawa

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From: Hawaii

vacuum hoses last YEARS. as in 20/30+ years and even more than that. you replace them as they start to crack and leak.

Jun 15, 2012 | 04:56 AM

caddyowner

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From: MI

In my experience, when vacuum tubes crack and start to leak, you will get a CEL and a code indicating such. Even my old Dakota, which was famous for leaky vacuum tubes, lit up the CEL and displayed a vacuum leak code on the radio display when the right buttons were pushed.

Jun 15, 2012 | 07:06 AM

jimbosr1

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the same hoses and vac lines are on my 86 mr2 that came from the factory.i have 82k miles on it and no problems yet.also has same waterpump and thermastat.