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Questions tagged [map]

Manifold Absolute Pressure Sensor

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0answers
38 views

Could a vacuum leak cause a drop in manifold absolute pressure?

I've been doing some reading and speaking to a mechanic trying to diagnose a hesitation and rough idling issue. I think I've ruled out a vacuum leak by spraying flammable gas around the seals and not ...
0
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0answers
23 views

MAP or MAF used in Hyundai Accent?

I want to ask, what sensors does this car have? MAP or MAF or both? If it has both, which sensor is used at each point in time?
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0answers
21 views

Check engine light error

My 06 Buick LaCrosse 3.8L has a check engine light that says that the MAP has a low voltage, so I checked the air filter. It was clean, then I changed out the MAP and the check engine light went off ...
0
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0answers
28 views

Vauxhall Corsa Ecoflex 2013 - Map is showing me about 2 miles away

I've had my Corsa since July last year. Last night on my drive home I noticed the satnav was showing my location as around 2 miles away from where I actually was. I hoped whatever it was would be ...
2
votes
0answers
15 views

06 Jeep Cherokee 8cyl; Auto transmission

It seems that I am annually having to replace the “map sensor” and various parts associated with that. Last week I replaced it again, and next will be the “auto throttle body” or something with the ...
2
votes
3answers
3k views

MAP Sensor weird readings

I have a 96 5.7L Vortec Chevy Tahoe which I bought a month ago. I was checking the sensor values using an OBD2 connector and noticed that the MAP sensor is not producing good values. I see 28 kPA / ...
5
votes
1answer
2k views

Why do modern PCMs prefer MAP over MAF

Why do modern PCMs prefer to use pressure sensors to estimate the air charge going into an engine instead of air flow meters. Eg they typically use a MAP sensor and complex software to estimate air ...
0
votes
1answer
287 views

p0104 MAF sensor

I'm having a P0104 error code, but there's no MAF sensor in my car (Focus mk2). There is a MAP sensor in it, but that should have another error code. Any idea how this is possible ?
1
vote
1answer
112 views

2007 Toyota Highlander GPS Navigation map no longer works

My 2007 Toyota Highlander gets the message "External system is not connected" when I push the "map" button. All other feature work on the counsel except for the gps navigation. I left the windows ...
1
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1answer
3k views

Calculate boost from MAP Sensor via OBD-II

I'm working on a little project where I want to calculate the boost pressure (in bar) which my turbo currently produces. I use a wifi OBD reader that I plug into my car. I saw mobile apps calculating ...
3
votes
1answer
554 views

Cleaned throttle body, MAP sensor suddenly dead

(Solstice) So, I cleaned my throttle body with brake cleaner. I thought it was carb cleaner, but I am apparently illiterate. (Honestly, I'm not sure what the difference between them is.) I was very ...
3
votes
1answer
3k views

Bosch MAP Sensor Voltage issue

For those who think: TL;DR long story short: I want to measure the voltage output at certain temperature but do not get a signal. Details: I have a BOSCH MAP Sensor here (0281006108), it has 4 Pins:...
3
votes
2answers
302 views

1999 Mercury Grand Marquis LS - map sensor, fuel filter, AC, tune up, what could it be

1999 Mercury Grand Marquis LS, 4.6L V8, 220,000 miles Originally the check engine light came on showing an error code of P0174 – engine too lean bank 2. The shop that we took it to said that it ...
8
votes
2answers
1k views

MAP sensor covered with gasoline

I have a 2007 Hyundai Accent SE with a 1.6 liter engine in it. It was stalling often so I hooked up a code reader and it said the MAP sensor was bad. I tried to check it to see if it might just be ...
4
votes
3answers
2k views

How would a bad barometric reading affect gas mileage?

My wife drives an '08 Hyundai Azera Limited 3.8L with ~79k miles. Over the past few months she has been complaining that the gas mileage has gone down. Normal around town driving was getting us ~19.6 ...
1
vote
1answer
616 views

How do I find the manifold absolute pressure sensor on a 1998Honda Accord

Where is the manifold absolute pressure sensor at on a 1998 Honda accord? I have tried looking on YouTube but haven't been able to find anything.
14
votes
3answers
46k views

What is the difference between a MAP and a MAF sensor

Generally a car uses either MAP or MAF to determine the air flow index the engine is getting and that older cars used to have MAP and newer ones often use MAF and cars like the Mitsubishi EVO uses ...