CTaylor:
Quote:
When you unplug the air temp sensor, the brain throws the mixture to full rich (12% CO). So you are lean when cold and unplugging the sensor provides some extra fuel, engine runs better.
You should simply check the air temp sensor. There should be 300-400 ohms across its terminals around 60 degrees.
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I thoroughtly agree. Did that. Put the temp sensor in the freezer and ohmed out quite well. The contacts were corroded. I also found that the cylinder head engine temp sensor was disconnected. This temp sensor is used in conjunction with the air temp sensor.
The car drives like one heck of a champ now. Question is when she cools down will she start up as well as she did when the air temp sensor was disconnected.
Before I put my foot in my mouth I will say this. Corroded connections plus a disconnected engine temp sensor played into poor driveability and terrible startups when I wanted to start the car returning from work.
As said before this engine runs like a scalded cat and I will be doing some looking into her to see what has been done if anything. I read reports that some people were dissatisfied with performance of the '74 D jet 450sl.
No Smoke out the exhaust. Runs smooth as hot butter sliding on a grill. Shifts firm but has an input seal leak.
The brake lines were contaminated beyond belief. Repeated bleeding and time is the only cure.