Thanks for the info guys . I'll try these when it gets a little warmer . It's about 17 deg today . Good thing this isn't a daily driver .
Todd Robbins. [email protected]
Clean throttle body and Idle air control valve.
Make sure throttle stop screw hasn't been moved from factory spec.
Make sure there is good coolant flow to the fast idle valve.
If it has the fast idle valve with a sheet metal cover held on with three screws, pull the cover and make sure the white plastic seat has not loosened and screwed its way up the bore.
Check the minimum airflow rate, which usually involves some combination of fully warmed up, unplugged idle motor and air bypass screw adjustment. Check reputable source (online or book)for the process for your specific model.
Make sure the throttle position sensor output voltage is between .4 and .5 volts.
Coolant temp sensor should read somewhere around 200-400 ohms at 190 degrees. Check a book or online for the spec for your specific application.
If that doesn't work, go to school, get a job in the trade, put in 5 years of apprenticeship and another ten as a diagnostic tech, and then you'll be able to figure it out for yourself, all while being paid less than a framing carpenter. Hmmm-Maybe that sounds bitter....
Jim Barnsley, Streetwise Service
WCMA IT2 Neon Twincam
2009/2010 Regional and Alberta IT2 Champion
2009 Regional Overall Champion. Second this year, dammit.
Todd, I replied to your PM before seeing this thread. I also thought IACV problem, but look at the PM for more description.
Kevin
2010 FP Runoffs & Super Sweep Champion
2010 ITB ARRC Champion
2008 & 2009 ITA ARRC Champion
'90 FP Acura Integra RS
'92 ITA Acura Integra RS
'92 ITB Honda Civic DX
+ whatever for IACV. Also possible temp sensor.
Spanky | #73 ITA 1990 Honda Civic WDCR SOLD | #73 ITA 1995 Honda Civic WDCR in progress |
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Isaac Rules | Build Pictures
the IACV is the usual suspect. if the idle shoots HIGHER than ~1200 then drops, then repeats ad nauseum, check the air bypass (idle adjustment) screw - tightining (restricting) that will often bring a surging idle under control when the IACV / FITV / temp sensor, coolant paths etc.. are verified to be good. leave it alone until those are verified, though.
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