Question about 1992 Lexus Sc 400
Air and Fuel Filters and PCV valve
Vacuum hoses for cracks and loose fittings.
EGR valve sticking
Spark Plugs and Wires for wear and even gap
Idle Air Control (IAC) selenoid, remove selenoid and using a rag wet with carb cleaner wipe sensor clean, wrap the rag on a wood or plastic stick and insert it into sensor housing making sure not to scratch walls and not spraying directly into housing or sensor.
Keep me posted
Posted on Aug 06, 2010
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Posted on Jan 02, 2017
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May 16, 2015 | 1995 Lexus Sc 400
Jan 31, 2011 | 1992 Toyota Pickup
Heater cold when at idle: Try stopping on a steep incline--does the heater stay warm? If yes, what you have is an air bubble that hangs at the heater hose until pressure from the water pump blows thru it as the engine speeds up. Park on an incline, open the radiator cap, run the engine until the thermostat is open, and fill the radiator to the neck. Wait until the level stops dropping and make sure bubbles don't continue to come up. If they do, you may have a blown head gasket that will keep forming these bubbles until you change the gasket. Please let me know if you have questions.
Dec 22, 2010 | 1992 Lexus Sc 400
Jun 15, 2010 | 1992 Lexus Sc 400
Apr 22, 2010 | 1995 Lexus Sc 400
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Jun 04, 2009 | 1992 Lexus Sc 400
Mar 21, 2009 | 1992 Lexus Sc 400
Jan 30, 2009 | 1992 Lexus Sc 400
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