Why wont truck start with map sensor plugged in but starts with it unplugged?

Will a 1995 neon start if cam sensor is unplugged?

No.

Will a bad knock sensor stop a Volvo 240 from starting?

I have a 240 and with the knock sensor unplugged it will still start so I would have to say no.

What does a code 23 in a 93 blazer means?

Code 23 in your 1993 Chevy Blazer is referring to the Manifold Air temp sensor being out of range. Start by looking for the sensor to see if it is unplugged.

Why doesn't your Chevy Caprice run with the map sensor plugged in?

The Map sensor tells the fuel injector how much fuel the engine needs. If not plugged in, it might start and run for a few seconds, since it usually runs rich to start, but then the computer will not know how much fuel to output, therefore it will stall

When a patient is declared brain dead with no functioning parts left and has been unplugged from life support can they be plugged back in?

Technically yes, although whether it will have any effect or not will depend on how long they were unplugged. At most a few minutes before cells start being damaged by lack of oxygen.

Why 2002 Chevrolet silverado won't start?

a motor needs fuel, spark, and air to run. Check your plugs, unplugged sensor wires, distributer cap.

What does the blinking red light on a Honda CRX ECU signify?

the lights flash in sequence to show dtc's (diagnostic trouble codes)count the #of flashes and that is the # of the codefor example if u r having a problem w/fuel inj. or main relayu should get 16 flashes then about a 3 sec pause then the code willrepeat unless there is more than one code so watch closelyevery 3 sec pause indicates the start of next codeTo find out what each code means, check this table:1) Primary oxygen sensor- Defective circuit or unplugged/ Defective sensor2) Oxygen sensor "B" - Defective circiut or unplugged/ Defective sensor3) MAP (Manifold Absolute Pressure) Sensor - Defective circuit or unplugged/ Sensor4) CKP (Crankshaft Position Sensor) - Defective circuit or unplugged/ Defective sensor5) MAP (Manifold Absolute Pressure) sensor -Mechanical problem/ Disconnected piping6) ECT ( Engine Coolant Temperature) Sensor- Defective circuit or unplugged/ Sensor7) TP (Throttle Position) Sensor -Defective circuit or unplugged/ Defective sensor8) TDC (Top Dead Centre) Sensor -Defective circuit or unplugged/ Defective sensor9) CYP (Cylinder) - Defective circuit or unplugged/ Defective sensor10) IAT (Intake Air Temperature)sensor- Defective circuit or unplugged/Defective sensor12) EGR (Exhaust Gas Recirculation) -Defective circuit or unplugged/ Defective sensor13) Atmospheric Pressure Sensor - Defective circuit or unplugged/ Defective sensor14) IAC (Intake Air Control) Valve- Defective circuit or unplugged / Defective sensor15) Ignition Output Signal - Missing or defective ignition output signal16) Fuel Injector System - Defective circuit or unplugged/ Defective fuel injector17) VSS (Vehicle Speed Sensor) - Defective circuit or unplugged/ Defective sensor19) Automatic transmission lockup control Solenoid Valve- Defective circuit or unplugged/ Defective solenoid. A/T Only.20) Electronic Load Detector - Defective circuit or unplugged/ Defective sensor21) VTEC Solenoid Valve- Defective circuit or unplugged/ Defective solenoid22) VTEC Oil Pressure Switch - Defective circuit or unplugged/ Defective switch23) Knock Sensor - Defective circuit or unplugged / Defective sensor30) Automatic Transmission Signal- Defective circuit or unplugged/ Defective sensor31) Automatic Transmission Signal "B"- Defective circuit or unplugged/ Defective sensor41) Primary Oxygen Sensor Heater- Circiut malfunction43) Fuel Supply System - Defective or malfunctioning Fuel Supply Sytem45) System too lean or too rich - Malfunction in the fuel monitoring systems48) LAF (Lean Air Fuel) sensor - Defective circuit or unplugged / Defective sensor54) CKF (Crankshaft Speed Fluctuation) sensor- Defective circuit or unplugged / Defective sensor61) Primary Oxygen sensor circuit- High/ Low Voltage, Or slow response63) Secondary Oxygen Sensor circuit- High/ Low Voltage, Or slow response67) Catalyst System Efficiency Below Threshold- Malfunctioning catalyst system70) Automatic Transmission - Malfunction with Automatic Transmission Controls71-74) Random misfire in Cylinders 1-4- Condition present Creating Misfire80) EGR (Exhaust Gas Recirculation) Insufficient Flow Detected86) ECT (Engine Coolant Temperature) Circuir Range / Performance Problem90) Evaporative Emissions Contrlo System - Leak Detected In Fuel Tank Area91) Fuel Tank Pressure Sensor- Low Input92) Evaporative Emission Control System Control System- Insufficient Purge FlowTo find out what each code means, check this table:1) Primary oxygen sensor- Defective circuit or unplugged/ Defective sensor2) Oxygen sensor "B" - Defective circiut or unplugged/ Defective sensor3) MAP (Manifold Absolute Pressure) Sensor - Defective circuit or unplugged/ Sensor4) CKP (Crankshaft Position Sensor) - Defective circuit or unplugged/ Defective sensor5) MAP (Manifold Absolute Pressure) sensor -Mechanical problem/ Disconnected piping6) ECT ( Engine Coolant Temperature) Sensor- Defective circuit or unplugged/ Sensor7) TP (Throttle Position) Sensor -Defective circuit or unplugged/ Defective sensor8) TDC (Top Dead Centre) Sensor -Defective circuit or unplugged/ Defective sensor9) CYP (Cylinder) - Defective circuit or unplugged/ Defective sensor10) IAT (Intake Air Temperature)sensor- Defective circuit or unplugged/Defective sensor12) EGR (Exhaust Gas Recirculation) -Defective circuit or unplugged/ Defective sensor13) Atmospheric Pressure Sensor - Defective circuit or unplugged/ Defective sensor14) IAC (Intake Air Control) Valve- Defective circuit or unplugged / Defective sensor15) Ignition Output Signal - Missing or defective ignition output signal16) Fuel Injector System - Defective circuit or unplugged/ Defective fuel injector17) VSS (Vehicle Speed Sensor) - Defective circuit or unplugged/ Defective sensor19) Automatic transmission lockup control Solenoid Valve- Defective circuit or unplugged/ Defective solenoid. A/T Only.20) Electronic Load Detector - Defective circuit or unplugged/ Defective sensor21) VTEC Solenoid Valve- Defective circuit or unplugged/ Defective solenoid22) VTEC Oil Pressure Switch - Defective circuit or unplugged/ Defective switch23) Knock Sensor - Defective circuit or unplugged / Defective sensor30) Automatic Transmission Signal- Defective circuit or unplugged/ Defective sensor31) Automatic Transmission Signal "B"- Defective circuit or unplugged/ Defective sensor41) Primary Oxygen Sensor Heater- Circiut malfunction43) Fuel Supply System - Defective or malfunctioning Fuel Supply Sytem45) System too lean or too rich - Malfunction in the fuel monitoring systems48) LAF (Lean Air Fuel) sensor - Defective circuit or unplugged / Defective sensor54) CKF (Crankshaft Speed Fluctuation) sensor- Defective circuit or unplugged / Defective sensor61) Primary Oxygen sensor circuit- High/ Low Voltage, Or slow response63) Secondary Oxygen Sensor circuit- High/ Low Voltage, Or slow response67) Catalyst System Efficiency Below Threshold- Malfunctioning catalyst system70) Automatic Transmission - Malfunction with Automatic Transmission Controls71-74) Random misfire in Cylinders 1-4- Condition present Creating Misfire80) EGR (Exhaust Gas Recirculation) Insufficient Flow Detected86) ECT (Engine Coolant Temperature) Circuir Range / Performance Problem90) Evaporative Emissions Contrlo System - Leak Detected In Fuel Tank Area91) Fuel Tank Pressure Sensor- Low Input92) Evaporative Emission Control System Control System- Insufficient Purge FlowTo find out what each code means, check this table:1) Primary oxygen sensor- Defective circuit or unplugged/ Defective sensor2) Oxygen sensor "B" - Defective circiut or unplugged/ Defective sensor3) MAP (Manifold Absolute Pressure) Sensor - Defective circuit or unplugged/ Sensor4) CKP (Crankshaft Position Sensor) - Defective circuit or unplugged/ Defective sensor5) MAP (Manifold Absolute Pressure) sensor -Mechanical problem/ Disconnected piping6) ECT ( Engine Coolant Temperature) Sensor- Defective circuit or unplugged/ Sensor7) TP (Throttle Position) Sensor -Defective circuit or unplugged/ Defective sensor8) TDC (Top Dead Centre) Sensor -Defective circuit or unplugged/ Defective sensor9) CYP (Cylinder) - Defective circuit or unplugged/ Defective sensor10) IAT (Intake Air Temperature)sensor- Defective circuit or unplugged/Defective sensor12) EGR (Exhaust Gas Recirculation) -Defective circuit or unplugged/ Defective sensor13) Atmospheric Pressure Sensor - Defective circuit or unplugged/ Defective sensor14) IAC (Intake Air Control) Valve- Defective circuit or unplugged / Defective sensor15) Ignition Output Signal - Missing or defective ignition output signal16) Fuel Injector System - Defective circuit or unplugged/ Defective fuel injector17) VSS (Vehicle Speed Sensor) - Defective circuit or unplugged/ Defective sensor19) Automatic transmission lockup control Solenoid Valve- Defective circuit or unplugged/ Defective solenoid. A/T Only.20) Electronic Load Detector - Defective circuit or unplugged/ Defective sensor21) VTEC Solenoid Valve- Defective circuit or unplugged/ Defective solenoid22) VTEC Oil Pressure Switch - Defective circuit or unplugged/ Defective switch23) Knock Sensor - Defective circuit or unplugged / Defective sensor30) Automatic Transmission Signal- Defective circuit or unplugged/ Defective sensor31) Automatic Transmission Signal "B"- Defective circuit or unplugged/ Defective sensor41) Primary Oxygen Sensor Heater- Circiut malfunction43) Fuel Supply System - Defective or malfunctioning Fuel Supply Sytem45) System too lean or too rich - Malfunction in the fuel monitoring systems48) LAF (Lean Air Fuel) sensor - Defective circuit or unplugged / Defective sensor54) CKF (Crankshaft Speed Fluctuation) sensor- Defective circuit or unplugged / Defective sensor61) Primary Oxygen sensor circuit- High/ Low Voltage, Or slow response63) Secondary Oxygen Sensor circuit- High/ Low Voltage, Or slow response67) Catalyst System Efficiency Below Threshold- Malfunctioning catalyst system70) Automatic Transmission - Malfunction with Automatic Transmission Controls71-74) Random misfire in Cylinders 1-4- Condition present Creating Misfire80) EGR (Exhaust Gas Recirculation) Insufficient Flow Detected86) ECT (Engine Coolant Temperature) Circuir Range / Performance Problem90) Evaporative Emissions Contrlo System - Leak Detected In Fuel Tank Area91) Fuel Tank Pressure Sensor- Low Input92) Evaporative Emission Control System Control System- Insufficient Purge FlowTo find out what each code means, check this table:1) Primary oxygen sensor- Defective circuit or unplugged/ Defective sensor2) Oxygen sensor "B" - Defective circiut or unplugged/ Defective sensor3) MAP (Manifold Absolute Pressure) Sensor - Defective circuit or unplugged/ Sensor4) CKP (Crankshaft Position Sensor) - Defective circuit or unplugged/ Defective sensor5) MAP (Manifold Absolute Pressure) sensor -Mechanical problem/ Disconnected piping6) ECT ( Engine Coolant Temperature) Sensor- Defective circuit or unplugged/ Sensor7) TP (Throttle Position) Sensor -Defective circuit or unplugged/ Defective sensor8) TDC (Top Dead Centre) Sensor -Defective circuit or unplugged/ Defective sensor9) CYP (Cylinder) - Defective circuit or unplugged/ Defective sensor10) IAT (Intake Air Temperature)sensor- Defective circuit or unplugged/Defective sensor12) EGR (Exhaust Gas Recirculation) -Defective circuit or unplugged/ Defective sensor13) Atmospheric Pressure Sensor - Defective circuit or unplugged/ Defective sensor14) IAC (Intake Air Control) Valve- Defective circuit or unplugged / Defective sensor15) Ignition Output Signal - Missing or defective ignition output signal16) Fuel Injector System - Defective circuit or unplugged/ Defective fuel injector17) VSS (Vehicle Speed Sensor) - Defective circuit or unplugged/ Defective sensor19) Automatic transmission lockup control Solenoid Valve- Defective circuit or unplugged/ Defective solenoid. A/T Only.20) Electronic Load Detector - Defective circuit or unplugged/ Defective sensor21) VTEC Solenoid Valve- Defective circuit or unplugged/ Defective solenoid22) VTEC Oil Pressure Switch - Defective circuit or unplugged/ Defective switch23) Knock Sensor - Defective circuit or unplugged / Defective sensor30) Automatic Transmission Signal- Defective circuit or unplugged/ Defective sensor31) Automatic Transmission Signal "B"- Defective circuit or unplugged/ Defective sensor41) Primary Oxygen Sensor Heater- Circiut malfunction43) Fuel Supply System - Defective or malfunctioning Fuel Supply Sytem45) System too lean or too rich - Malfunction in the fuel monitoring systems48) LAF (Lean Air Fuel) sensor - Defective circuit or unplugged / Defective sensor54) CKF (Crankshaft Speed Fluctuation) sensor- Defective circuit or unplugged / Defective sensor61) Primary Oxygen sensor circuit- High/ Low Voltage, Or slow response63) Secondary Oxygen Sensor circuit- High/ Low Voltage, Or slow response67) Catalyst System Efficiency Below Threshold- Malfunctioning catalyst system70) Automatic Transmission - Malfunction with Automatic Transmission Controls71-74) Random misfire in Cylinders 1-4- Condition present Creating Misfire80) EGR (Exhaust Gas Recirculation) Insufficient Flow Detected86) ECT (Engine Coolant Temperature) Circuir Range / Performance Problem90) Evaporative Emissions Contrlo System - Leak Detected In Fuel Tank Area91) Fuel Tank Pressure Sensor- Low Input92) Evaporative Emission Control System Control System- Insufficient Purge Flow

Mazda B3000 will not restart when hot?

when it does not start disconect your cts (colant temperature sensor )and then start if it starts replace your cts

Why does engine quit after start?

On newer fuel injected cars when the Manifold Absolute Pressure sensor (M.A.P sensor) goes bad it will cause the car to fire up but then quickly stall. Unplug the MAP sensor and then try starting the car, if it will stay running with it unplugged it is the culprit (don't try and drive around with it unplugged though, it will run terrible and get horrible milage) This is just one of many possible causes

Will a defective EGR valve position sensor make the engine not start?

Unless the EGR position sensor is shorting out the 5V reference, NO. If you suspect the sensor, simply unplug it & see if the starts.

Why does your 1988 Supra start and run fine until you try to give it gas then it dies?

First I would go with the fuel pump and the fuel filter. Check the vacuume lines. You may have unplugged crossed or not plugged something back in.

Do you need to keep a refrigerator plugged in when not in use?

It depends on what you mean by not in use. You may unplug your refrigerator if there is absolutely no perishable food inside.