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Re: Bad O2 or AMM? Posted by Ari [Email] ![]() ![]() In Reply to: Bad O2 or AMM?, Andy K, Mon, 31 Dec 2001 10:50:12 Members do not see ads below this line. - Help Keep This Site Online - Signup |
As Dave says, 380 ohms is just a starting point. If you were able to adjust the AMM to get the O2 sensor to swing properly, I'd say both the O2 and the AMM are OK.
There are a bunch of things that can cause the idle hunt. And on some cars, you just never manage to fix it. According to the Saab manual, the order of things to go after for a fluctuating idle is
(1) IAC valve
(2) Induction system (vacuum leaks - loose/cracked hoses, throttle body bolted on tight, bag injector O-rings, fuel pressure regulator)
(3) Throttle position sensor bad/misadjusted
(4) Evaporative purge system - leaks/bad valve
(5) Speed pickup
Good luck!
posted by 12.79....
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