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Re: Wet weather issue Posted by Saana88 [Email]  (#207)  [Profile/Gallery]
(more from Saana88) on Tue, 15 Apr 2008 15:59:15
In Reply to: Ongoing wet weather issue driving me nuts, tsw, Tue, 15 Apr 2008 13:32:31 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Assuming your car has no vacuum leaks, my guess for idle irregularities is a bad connection, as nick-squared says (at the AIC or idle switch) or other places. Is the check engine light on when this happens?
Half of a connection is the ground connection, so you may want to check the engine grounds with a high-impedance meter.
A dying ignition amplifier will usually give you sudden death or a no-start; I highly doubt it's that.
LH connections that will give a funky idle if they are no good are (in order):
Throttle (idle) switch
AIC motor connector
NTC
Air mass meter
Oxygen sensor (only when warmed up)
How old is the oxygen sensor? Got continuity across the heater circuit? I'm almost willing to think that the oxygen sensor signal lead could develop a short and confuse your control unit, so it will tweak the mixture, which sends up the idle, then realize the idle is too high, shut down the AIC, feel the idle nosedive, open it back up again, et cetera.
I'm going to assume you have cleaned out the AIC motor and the throttle body, am I right?
Good luck- kick out all these and move on until you get it fixed permanently. It may take time, but it will work.
, Tue, 15 Apr 2008 15:59:15 <-- Viewing This Message, Wed, 16 Apr 2008 18:42:50
, Tue, 15 Apr 2008 14:55:29
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