Question about 2000 Chevrolet Impala
Sets codo for mass airflow rest computor car willstart up an run
Clean the mass air flow . they have a can of spray u can get from te parts store its like 6or 7 dollars but might solve the problem
Posted on Jan 04, 2013
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Posted on Jan 02, 2017
Check the distributor cap/wires/spark plugs. Also might be clogged injectrors (injector cleaner)
Hope that helps
Posted on Mar 18, 2009
SOURCE: I unplugged the Mass Airflow
Most likely if there is no mass air sensor you actually unplugged the inlet air temperature sensor IAT. This is a little bead like thermistor that sits in the ducted air stream to measure incoming air temperature. Without an air mass sensor your engine will have instead a manifold absolute (air) pressure MAP sensor. This measures the absolute air pressure (the difference between the atmospheric air pressure outside and the drop in pressure inside) in the inlet manifold. The drop in pressure in conjunction with air temperature allows the engine control unit to calculate the amount of air in the engine to which it adds the correct amount of fuel per each injection cycle. The loss of the IAT signal is not critical as the ECU will assume a default value. However when extreme low temperatures are encountered the absence of the IAT may be become noticeable as the charge of air entering the engine will be denser and as a consequence the fuel mix will be much leaner; maybe to lean to start up.
Posted on Sep 08, 2010
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