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3v MAP Sensor Fault 

 

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Fairmont_03_5.4
 Post subject: 3v MAP Sensor Fault
Posted: Tue Sep 21, 2010 11:18 pm 
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Hey Guys,

I got a 3V and sometimes when i gear down and stop at the lights the motor revs between 1000-1500 it eventually goes back to normal but its annoying as all hell. Also it stalls sometimes when i start it, ive been told its the MAP sensor at fault. How do i know for sure without having to pay the $130 bucks for a new one?

Cheers,

 

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BA Fairmont Ghia 5.4L. Mods -Full Exhaust, Chipped, Custom Intake, CAI @205.4RWKW.
Stezza - Alpine Type R Splits & 6x9's, Alpine 400w RMS 4ch, 380w RMS Pioneer Mono, 2x12" Pioneer Subs and an AVH-P5950DVD Player.
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ToranaGuy
 Post subject: Re: 3v MAP Sensor Fault
Posted: Tue Sep 21, 2010 11:30 pm 
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Need to get a code scanner on the car & check for fault codes.

Cheers

ToranaGuy

 

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Fairmont_03_5.4
 Post subject: Re: 3v MAP Sensor Fault
Posted: Tue Sep 21, 2010 11:32 pm 
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The LPG computer says that its faulty, should i take it to ford aswell?

 

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BA Fairmont Ghia 5.4L. Mods -Full Exhaust, Chipped, Custom Intake, CAI @205.4RWKW.
Stezza - Alpine Type R Splits & 6x9's, Alpine 400w RMS 4ch, 380w RMS Pioneer Mono, 2x12" Pioneer Subs and an AVH-P5950DVD Player.
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ToranaGuy
 Post subject: Re: 3v MAP Sensor Fault
Posted: Tue Sep 21, 2010 11:59 pm 
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Could it be a wiring fault?

Cheers

ToranaGuy

 

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Fairmont_03_5.4
 Post subject: Re: 3v MAP Sensor Fault
Posted: Wed Sep 22, 2010 10:23 am 
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Yeah it could be, i'll have a good look at it tonight, might grab a new sensor today as well. Hopefully the piece of crap can run for a week without breaking something else.

 

_________________

Chaos, Panic and Disorder. My work here is finally done.
BA Fairmont Ghia 5.4L. Mods -Full Exhaust, Chipped, Custom Intake, CAI @205.4RWKW.
Stezza - Alpine Type R Splits & 6x9's, Alpine 400w RMS 4ch, 380w RMS Pioneer Mono, 2x12" Pioneer Subs and an AVH-P5950DVD Player.
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XR9UTE
 Post subject: Re: 3v MAP Sensor Fault
Posted: Wed Sep 22, 2010 3:16 pm 
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Fairmont_03_5.4 wrote:
The LPG computer says that its faulty, should i take it to ford aswell?


Yes but what does the PCM say?
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Fairmont_03_5.4
 Post subject: Re: 3v MAP Sensor Fault
Posted: Wed Sep 22, 2010 5:32 pm 
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PCM? Have no idea, i dont have the tools to plug into the car and find out what the fault code is. No lights come up on the dash, just runs like a dog, surges and stalls all the time. Sometimes it stalls 1 second after its been started. And even if the computer throws up a fault code saying the MAP sensor is at fault it could be the vacuum lines, faulty wiring, leaking inlet manifold gasket. But ive checked all that so hopefully a new MAP will solve the issue.

In the workshop manual it says " if the T-MAP sensor is damaged or faulty, but still operating within the operating range, no fault code will be logged in memory and value substitution will not take place. Under these conditions the PCM will increase the injector timing in an attempt to compensate; causing difficult starting, rough running and poor fuel economy"

I have all those symptoms, so a replacement seems like the go. Mind you the poor fuel economy comes with owning a V8 :).

 

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Chaos, Panic and Disorder. My work here is finally done.
BA Fairmont Ghia 5.4L. Mods -Full Exhaust, Chipped, Custom Intake, CAI @205.4RWKW.
Stezza - Alpine Type R Splits & 6x9's, Alpine 400w RMS 4ch, 380w RMS Pioneer Mono, 2x12" Pioneer Subs and an AVH-P5950DVD Player.
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Fairmont_03_5.4
 Post subject: Re: 3v MAP Sensor Fault
Posted: Wed Sep 22, 2010 11:30 pm 
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Ride: Fairmont Ghia BA 5.4L V8, AU 6

Power: 205 rwkw

Location: Perth
WA, Australia
Hey all,

Just incase your wondering the MAP Sensor was the problem. Changed it then and took it for a spin, got alot more balls in the top end now :). Time to book it in for another power run on the dyno.

 

_________________

Chaos, Panic and Disorder. My work here is finally done.
BA Fairmont Ghia 5.4L. Mods -Full Exhaust, Chipped, Custom Intake, CAI @205.4RWKW.
Stezza - Alpine Type R Splits & 6x9's, Alpine 400w RMS 4ch, 380w RMS Pioneer Mono, 2x12" Pioneer Subs and an AVH-P5950DVD Player.
Top
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