This category on the website [ Sensors and Wiring ] we are giving you all of the information related to the individual sensors in the Buick Turbo Regal, along with the associated wiring, connector plugs, etc.
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VEHICLE APPLICATION:
Buick Regal, T-Type, Turbo T, Limited, Grand National, GNX
SENSOR NAME:
Manifold Absolute Pressure Sensor
PURPOSE OF SENSOR:
OEM version uses this for the boost gage on analog dash gauges cars.
Aftermarket units use this to measure vacuum/boost signal.
TURNS ON-OFF / FUNCTIONS / USED WHEN:
in constant use while engine is running
LOCATION IN VEHICLE:
passenger side fender, first unit on the bracket (next to fuel pump & a/c relays, and ESC module)
ORIGINAL GM PART NUMBER:
2 bar: 12569241
3 bar: 12223861
SENSOR / BASE COLOR:
black (usually)
CONNECTOR PLUG COLOR (SENSOR SIDE):
black
WIRES ATTACHED (SENSOR SIDE):
no wires, but has a vacuum hose outlet
CONNECTOR PLUG COLOR (HARNESS SIDE):
black
NUMBER OF WIRES ATTACHED (HARNESS SIDE):
3
COLOR & PURPOSE OF (HARNESS SIDE) WIRES:
Black “A”, goes to (junction) to (factory dash) boost gauge “H” (boost gage ground)
Green “B”, goes to (junction) to (factory dash) boost gauge “G” (boost gage signal)
Gray “C”, goes to (junction) to (factory dash) boost gauge “F” (boost gage bias voltage; 5v)
THINGS TO KNOW ABOUT THIS ITEM:
map sensors are used with analog dash.
2 bar units are for stock vehicles.
3 bar units are for high boost applications.
2 bar & 3 bar GM sensors look exactly the same, check part number to see which you have!
higher reading (“bars”) are available as well.
OTHER NOTES:
the MAP sensor is called “turbo boost gage sensor” on diagrams
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you can see here: 1984/1985 sensor locations
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PHOTOS OF SENSOR AND CONNECTED WIRES:
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Here’s a list of all of the sensors in the Buick Regal:
(you can click the links to go to the one you need info about, after they’re published)
* Air Temperature Intake Sensor (IAT; MAT; ATS)
* Camshaft Sensor (CAM)
* Coolant Temperature Sensor (CTS)
* Crank Sensor
* Knock Sensor
* Mass Air Flow Sensor (MAF)
* Manifold Air Pressure Sensor (MAP)
* Oxygen Sensor (O2, narrowband)
* Throttle Position Sensor (TPS)
* Turbo Boost Gage Sensor
* Twilight Sentinel Photo Cell Sensor
* Vehicle Speed Sensor
* Wideband Oxygen Sensor (WBO2)
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