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Registered
Join Date: Dec 2008
Location: Gladwyne, PA
Posts: 201
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SC idle speed
What should the idle speed be on my '82 stock RoW SC?
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10-14-2010, 03:13 PM
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Registered
Join Date: Oct 2003
Location: Michigan
Posts: 14,093
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800-900 RPM warmed up
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1981 911SC ROW SOLD - JULY 2015 Pacific Blue Wayne |
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10-14-2010, 03:20 PM
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Registered
Join Date: Dec 2008
Location: Gladwyne, PA
Posts: 201
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Mine I have noticed is around 1100 now. The weather here in PA is a bit cooler, what would cause a change? I thought it used to be around 8-900. Thanks.
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10-14-2010, 03:31 PM
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Control pressure or unmetered air........
Quote:
Neal, Due to the weather getting colder, your control pressure change could directly affect the engine RPM. WUR , AAR, and unmetered air could also affect a change in engine speed. Is the 1100 RPM at fully warmed up engine (185°F plus)? Does the idle speed when fully warmed up change after you removed the oil filler cap? Keep us posted. Tony |
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10-14-2010, 04:37 PM
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Senior Member
Join Date: Nov 2000
Location: Great NorthWest
Posts: 3,944
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Have your CO2 adjusted. It's going into colder weather and your car is experiencing denser air concentrations in its mix. Note also gas mixes being delivered to stations with more Ethanol mix.
This all assumes gas / oil / air filters in good nick, valves not tight, etc. A maintained car.
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'78 Targa in Minerva Blue |
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10-14-2010, 07:08 PM
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