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Old 07-31-2016, 06:34 PM   #1
OldMacTech
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Join Date: Apr 2012
Location: Atlanta
Posts: 26
Getting at the vacuum valves und intake manifold

97' 2.5 secondary air pump comes on but throws p0410 and 411 codes. (Might have the numbers wrong from memory but relates to secondary air)

Connected vacuum to the nipple on changeover valve, will not hold vacuum. Does lack of vacuum indicate failure?

Wanting to change it out and research says intake manifold has to come off, different one says just have to remove the throttle body to gain access.

Would very much like to avoid pulling intake.

Tips would be appreciated.

John
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