Tapping noise after sitting 5+ hours
Open your copy of the RAVE, workshop manual, emissions controls. It has an electric pump, some solenoid and vac operated valves, and is a known source of "the tick" (but not the only source). Also, if you have a 97, it is not a D2, so it won't have one and you may not find what you seek in this part of the forum. More likely you have oil pressure / oil pump problem, or flex plate cracked (tranny to flywheel interface).
Funny thing I just went outside sto start it and it was quiet as a mouse
The Secondary Air Injection system is only on DII's, it is on the passenger side of the engine.
It is a emissions device that injects fresh air into the raw exhaust of a cold engine to aid in the heating up of the catalytic converters to reduce emissions.
Cats only work when hot, the faster they heat up the less pollution.
It is a emissions device that injects fresh air into the raw exhaust of a cold engine to aid in the heating up of the catalytic converters to reduce emissions.
Cats only work when hot, the faster they heat up the less pollution.
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Pro Wrench
Joined: May 2010
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From: St Louis MO
...and FTR, I don't have SAI. Ever since last January or so, it has been almost quiet as a mouse, less what I believe to be a small exhaust leak causing a faint tick, which I haven't looked into yet.
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Murph_Dog
Discovery II
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Feb 15, 2010 10:57 PM
