EL CAMINO What is this electrical box?

vpmac

vpmac

Not-quite-so-new-guy
May 14, 2017
16
1
3
Fayetteville Ga.
#1
This little black box is located under the hood on the passenger fender. What is it for, what does it do? Do they ever need repair, like cause your accessories not to work? Maybe a dumb question but I cannot find a photo or anything on the web about it.

Thanks

Mac
 

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TURNA

TURNA

Geezer
Jul 24, 2009
5,275
3,179
113
Socialist NY
#2
MAP sensor
 
airboatgreg

airboatgreg

Royal Smart Person
Oct 2, 2016
1,167
731
113
#3
If no vacuum line a B map
 
foxtrot

foxtrot

Royal Smart Person
Dec 19, 2008
1,470
271
83
USA
#5
Thats the gov tracking device - j/k

As stated above its the MAP sensor.
 
TURNA

TURNA

Geezer
Jul 24, 2009
5,275
3,179
113
Socialist NY
#6
Is the computer crap still hooked up in the car?
 
foxtrot

foxtrot

Royal Smart Person
Dec 19, 2008
1,470
271
83
USA
#7
What is it for? No vacuum to it.
The Map sensor provides manifold pressure to the CCC. The meas is used to calculate air density and air flow rate. This info is used to determine the optimum primary carb fuel metering while cruising. I believe that the CCC also uses it ti adjust the ignition timing while cruising.
 
Clone TIE Pilot

Clone TIE Pilot

Royal Smart Person
Aug 14, 2011
1,826
181
63
Galaxy far far away
#8
There are two modules there, the ESC module which operates the spark advance in conjuction with the ECM. The second module is either the vacuum sensor or the Baro sensor depending on ths model year. If there is a vacuum line going to the sensor, it is a vacuum sensor. Vacuum sensors are different from MAP sensors as they read inverse.
 

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