MAP Sensor Relocated 94 SLS
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Cadillac Seville / Cadillac Eldorado Forum Discussion, MAP Sensor Relocated 94 SLS in Past Cadillac Vehicle Discussion; Need help with Map Sensor on a 94 Cadillac Seville SLS. Unable to find in on the Thottle Body. I ...
  1. #1
    JCJay620 is offline Cadillac Owners Member
    Automobile(s): 94 Cadillac Seville SLS
    Join Date
    Dec 2009
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    MAP Sensor Relocated 94 SLS

    Need help with Map Sensor on a 94 Cadillac Seville SLS. Unable to find in on the Thottle Body. I Did find what looks like the older style type GM MAP sensor bolted on to the Brake Booster Unit. I measured the voltage at the sensor and its at 5 volts and it has the vacuum hose running off the booster unit into the sensor. did they just relocate it there?

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  3. #2
    Krashed989's Avatar
    Krashed989 is offline Cadillac Owners Connoisseur
    Automobile(s): 94 Eldorado, and a 99 ETC
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    Re: MAP Sensor Relocated 94 SLS

    Take off the plenum/beauty cover. It will be on the drivers side front. Do NOT start the engine with that cover off; The RPMS will bounce off of the rev limiter unthrottled. The MAP sensor doesnt need a vacuum line since it's inside of the manifold.



    Also try looking at PCM DATA displays PD02 and PD03. PD02 is what the MAP sensor is seeing in kpa (Kilo Pascals). PD03 is the atmospheric pressure also in kpa. So with the engine off, they should be showing the same pressure (or close to the same).

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