Tip & How-To about Chevrolet Beretta

Rough idle/acceleration

In my last tip i made a slight mistake and mentioned to replace the hose on the MAF sensor errata! i meant to say MAP sensor, but still i would also like to add the MAF to the list of problems that can cause rough on acceleration...but it is only to be cleaned with electrical contact cleaner.

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location of map sensor on 2003 windstar

Fern, I believe you mean the Mass Air Flow sensor (MAF). It is normally found in the fresh air intake plastic/rubber hoses attached to the air filter box, on yours it may be in the part of air filter box. Check the attached links,instruction and guides, Good luck
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2003 Ford Windstar clean or replace Mass Air Flow sensor MAF
Clean Your MAF
2003 windstar MAF sensor location Google Search

Aug 01, 2016 | Cars & Trucks

2 Answers

What color wires on MAF/IAT sensor for 2005 grand Cherokee limited

what job? which engine.? 3.7L SOHC, engine? or the 4.7 V8?
3.7 is just a 4. 7 with missing 2 cyl. (the engine plants in Detroit are side by side)
hacking ?(if true, i can prove it wont work what ever you are doing) ask why?)
or diagnosing them? sure can help,
the FSM book covers this, ever heard of the factory service manual. ??? aka. SM? but the Factory one is BEST !
the chapter 8 covers all this. ever inch of wires. covered.

the IAT has 2 wires, see it there, its obvious the colors.
the MAF, what maF? ) sure you meant MAP ok?)

2005 is a WK jeep,
the full manual is here

if you use the live data from the scan tool
you can see if either are reading wrong, did you?>

my guess is you meant air flow sensors in general.
there are 2 kinds, MAP and MAF
most jeeps run a MAP and not a MAF.!
if you knew how to test both you'd for sure know what is there.
In fact i always check this first. (speed density/air density systems are radically different)

there is no MAF.
the MAP measures Baro vacuum in the plenum
and the PCM has very complex tables that computer injection rates vacuum readings (air flow is calculated on this engine not measured directly with a MAF)
page 8w-30-11 and 30-16 cover both sensor wiring.

the map only measures vacuum (or in science, Baro pressure).
i have the baro to voltage reading chart for this sensor.
if you need it.
ah shucks , this guy has it...


some FSM its missing this very important chart.
grab it and keep it.

Jul 08, 2014 | 1997 Jeep Grand Cherokee

1 Answer

Car dying during slow down to stop, and while in park vehicle will move slightly if accelerator is mashed

If this was a EGR problem you would have a rough idle,If you are a 3.1 you are equipt with a MAP sensor this map sensor has a high failure rate with the vacuum hose connection and the MAP itself,This can be you culprit, If you are a 3.8 the culprit is the MAF mass air flow sensor.3_17_2012_8_55_47_pm.jpg3_17_2012_8_55_56_pm.jpg

Mar 17, 2012 | 1992 Buick Regal

1 Answer

where is located the map sensor on a f-150 2004 4.6

MAP sensor is usually a square looking thing with a vacuum line and electrical connector attached to it. If you somehow meant the MAF sensor then it is located in the air intake hose near the throttle body. Hope this helps.

MAP sensor is usually mounted to the fire wall of the vehicle.

May 28, 2010 | 2004 Ford F150

2 Answers

1991 olds cutlass calais 2.5 engine ran the self dignostics and got code 33 need to what code 33 is.

It's the maf/map sensor circuit.
maf--- mass air flow sensor
map--- manifold absolute pressure.--- check the small vaccum hose from the map sensor to the source, could be brittle and leaking air.
Have both the map and maf sensor checked for proper voltage, one or both could be bad. A repair shop shouldn't charge much to do that.

May 05, 2010 | 1991 Oldsmobile Cutlass Calais

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