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Disconnected Air Intake Sensor


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Solrac1979
New User

May 9, 2017, 1:53 AM

Post #1 of 7 (150 views)
Disconnected Air Intake Sensor Sign In

Year of vehicle 2007
Make of vehicle Ford
Model of vehicle SMax
Engine size 1.8 DCI
Mileage 70000 Miles

Hoping someone could help with a couple of questions I have concerning a SMax I was looking at.

When inspecting the engine I noticed that the Air Intake sensor Link deleted ............ Not allowed

Was disconnected and hanging loose, covered in insulation tape. This was quite concerning and dissuaded me from the purchase, could anyone answer the following questions?

1. Why would someone disconnect this sensor. I am assuming it is still working as the engine management was not on?
2. Would this cause any long lasting damage to the engine or is this just a simple case of reconnecting the sensor to the MAF?
3. Would I need to also replace the MAF?

Any help would be greatly appreciated!!

Thanks


(This post was edited by Hammer Time on May 9, 2017, 4:50 AM)


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

May 9, 2017, 2:38 AM

Post #2 of 7 (143 views)
Re: Disconnected Air Intake Sensor Sign In

First things first - is this a car you are looking at to buy or what? Let the seller put it in shape and still check out the vehicle before you get burnt,


T



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

May 9, 2017, 4:48 AM

Post #3 of 7 (136 views)
Re: Disconnected Air Intake Sensor Sign In

You ask about an Intake Air temp sensor and then you start talking about a MAF. Which is it?

Is the sensor still attached to the wiring and plugged in or is it entirely missing?

Has this guy installed an aftermarket intake system?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on May 9, 2017, 4:49 AM)


Solrac1979
New User

May 9, 2017, 5:44 AM

Post #4 of 7 (126 views)
Re: Disconnected Air Intake Sensor Sign In

Hi Hammer Time,

Sorry for the confusion.
Intake Air Sensor is disconnected from the housing but still wired up. The sensor itself has been covered with tape and is just hanging loose.
The guys seems totally unaware of why it was disconnected and advised he hasn't changed anything with the car.
My concern is that this may have caused damaged to the engine due to misfiring as that dirty air has been sucked into the hole where sensor should be sitting.

Thanks


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

May 9, 2017, 7:57 AM

Post #5 of 7 (115 views)
Re: Disconnected Air Intake Sensor Sign In

The dirty air isn't the big issue. It is the unmetered air being introduced after the MAF, assuming it has one would create a lean fuel mixture. We don't have any info on that vehicle.

I can't picture any reason or perceived benefit to remove it from the intake snorkel.

Maybe someone had the foolish belief that they could fool the computer into a richer mixture for more power. That won't work.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Solrac1979
New User

May 9, 2017, 11:34 PM

Post #6 of 7 (88 views)
Re: Disconnected Air Intake Sensor Sign In

Thanks for the advice. I have done some further research and I also cannot find any logical reason to disconnect the sensor. So i think I will pass on this one.

Cheers!!


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

May 10, 2017, 12:12 AM

Post #7 of 7 (86 views)
Re: Disconnected Air Intake Sensor Sign In

Good move,


T







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