The following statements are all correct EXCEPT:
A) Fuel systems that have never been cleaned may have developed wax deposits as well as carbon.
B) On engines operating very poorly, the PCM should be relearned after fuel system cleaning.
C) Relearning the PCM should never be attempted.
D) The fuel rail and pressure regulator should be cleaned as well as fuel injectors.
C
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In order for a flooded condenser type head pressure control system to operate, a device called a(n) ____________________ holds the extra refrigerant in warmer weather when the condenser doesn't need to be flooded.
Fill in the blank(s) with the appropriate word(s).
The 741 operational amplifier can easily be changed from a square wave oscillator to a(n) ____.
a. triple wave b. sine wave c. voltage inverter d. pulse generator
If little or no resistance is felt while operating the temperature control lever, the problem is most likely which of the following?
a. the heat control valve is seized
b. There is a vacuum leak between the intake manifold and control valve
c.
In some hybrid electric vehicles, the wide band oxygen sensor can cause the PCM to enter closed loop ________
A) Within 10 seconds of engine (ICE) start-up B) As soon as the engine (ICE)starts C) Within 2 minutes D) By the time the vehicle reaches 60 mph