map sensor
03-10-2017, 09:23 PM
#2
Prominent Member
Join Date: Jul 2010
Location: Born on the Florida West Coast, now where can I retire?
Posts: 1,505
Re: map sensor
Map sensors are pretty cheap. Why bypass it? But to answer your question, I think the best bet is to just unplug it and let the computer set a code and ignore it if possible.
03-11-2017, 08:43 AM
#3
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Join Date: Dec 2015
Location: St. Paul, MN
Posts: 194
Re: map sensor
The Manifold Absolute Pressure (MAP) sensor is used by the Powertrain Control Module (PCM) for engine load input. The PCM uses this input, as well as others, to calculate the correct amount of fuel to inject into the cylinders.
A failed MAP sensor has serious implications on fuel control, vehicle tailpipe emissions and fuel economy.
Curious why you would want to eliminate it ?
A failed MAP sensor has serious implications on fuel control, vehicle tailpipe emissions and fuel economy.
Curious why you would want to eliminate it ?
Last edited by gaedbo; 03-11-2017 at 08:45 AM.
03-11-2017, 12:06 PM
#4
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Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 70,646
Re: map sensor
3.4L V6 operates in speed-density = no MAF sensor. There are two CRITICAL sensor inputs to the speed-density mass air flow calculation - ACCURATE (absolute) inlet air temperature, and ACCURATE Manifold Absolute Pressure. Bypassing the MAP sensor will totally screw up the mass air flow calculation, which totally screws up the A/F ratio.
And the ignition timing table needs accurate MAP.
Might just as well cut off a couple spark plug wires while you're at it.
And the ignition timing table needs accurate MAP.
Might just as well cut off a couple spark plug wires while you're at it.
Last edited by Injuneer; 03-11-2017 at 12:08 PM.
03-11-2017, 07:57 PM
#5
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Thread Starter
Join Date: Nov 2009
Posts: 54
Re: map sensor
my map sensor elect. connector broke and I tried to splice on a new connector but the 3 wires coming out of the harness are very short and one of them theirs not even enough wire coming out of the harness to make a splice and I cant get my hands down to the harness it's a nightmare any help would be appreciated.
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