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where does the MAP hose connects?

Old 11-11-2006, 11:34 AM
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tunanut
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Default where does the MAP hose connects?

Please Help, rats ate my vacuum lines and I am tring to reconnect my vacuum lines. I am not sure where does the MAP (Manifold Absolute Pressure sensor connect to on the intake manifold? I have attached a picture with the manifod with possible connections. Could someone tell me which connector it connects to? I think it connects to point A or D. The other vacuum hose in question is the vacuum distribution Block located on driver side firewall which I think it connects to either A or D. Please help

[IMG]local://upfiles/5669/63EA6A02A2024C4DB6A8F7307CF246D4.jpg[/IMG]
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Old 11-11-2006, 11:40 AM
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fourfivefour
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Default RE: where does the MAP hose connects?

It really wont matter where you connect the hoses. They are all manifold vacuum ports. The diagram I have does not show which port on the vaccum tree is what. It just shows each componet connected to manifold vaccum.
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Old 11-11-2006, 12:06 PM
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tunanut
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Default RE: where does the MAP hose connects?

Thanks, I was not sure if it made a difference. I am getting a continuous memory code of 22 using a analog volt meter. System passes engine off and run test, but after I clear the continous memory codes, it comes back and I get a check engine light on, engine light turns off for short periods of time while driving with a very little load on motor. I relpaced the MAP sensor and made no difference. I check ref voltage and output of sensor and it seems correct compare to the manual. The newer sensor has 2.2 volts verses 1.9 volts of old sensor. When the car is running and varing RPM the DC output does not change on either sensor, so I assume it is a frequency signal comming out of the sensor which I can not read with DC volt meter. I was hoping I was connecting to the wrong vacuum port. Any suggestions will be aprreciated.
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Old 11-11-2006, 09:00 PM
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Default RE: where does the MAP hose connects?

bump
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Old 11-11-2006, 09:41 PM
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Black Snake
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Default RE: where does the MAP hose connects?

If your MAF then you dont plug the MAP sensor into intake leave it open to atmosphere.
If SD then yes connect to intake.
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Old 11-11-2006, 09:50 PM
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Default RE: where does the MAP hose connects?

^^ that is what I was thinking.
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Old 11-11-2006, 09:51 PM
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Default RE: where does the MAP hose connects?

but be sure to plug the vacume line in the intake
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Old 11-11-2006, 09:53 PM
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Joel5.0
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Default RE: where does the MAP hose connects?

...SD system = vacuum to MAP....MA system = no vacuum to MAP...it's now a BP sensor + the vacuum connection is what is causing the code 22 to show up....
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Old 11-11-2006, 10:22 PM
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tunanut
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Default RE: where does the MAP hose connects?

Thank you everyone for the help. Yes my car uses MAF. I will disconect the vacuum line going to the MAP and plug the vacuum port I was using. I hope this will clear the check engine light.
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