Air Mass Flow
Thread Starter
Newbie - Just Registered
Joined: Oct 2003
Posts: 1
Air Mass Flow
I'm new to the site. A friend pointed me to it.
Anyway, I have a 2000 Maxima that is not running well. If you are running along around 45mph and punch it like to pass someone, the engine simply has no horsepower. You can let off of it a little and it seems to pick up speed slowly. The Service Engine Light (SEL)was on until I took it to the dealer. The first said it showed an O2 sensor problem. I tried to save some $ and had a local NAPA shop check the codes and order the sensor (Bosch brand) for Bank 1. I picked up the vehicle and didn't see any improvement at all. Now the SEL is back on so I took it back to the Nissan dealer and now they are saying I have to replace the Air Mass Flow (sensor/valve?). Anyway, I'm obviously not a mechanic but my friend said to clean it with carborator cleaner and lots of times it will take care of the problem.
Is this true?? If so, where do you find this valve/sensor? Has anybody else had a similar problem?
Thanks in advance.
Rick
Anyway, I have a 2000 Maxima that is not running well. If you are running along around 45mph and punch it like to pass someone, the engine simply has no horsepower. You can let off of it a little and it seems to pick up speed slowly. The Service Engine Light (SEL)was on until I took it to the dealer. The first said it showed an O2 sensor problem. I tried to save some $ and had a local NAPA shop check the codes and order the sensor (Bosch brand) for Bank 1. I picked up the vehicle and didn't see any improvement at all. Now the SEL is back on so I took it back to the Nissan dealer and now they are saying I have to replace the Air Mass Flow (sensor/valve?). Anyway, I'm obviously not a mechanic but my friend said to clean it with carborator cleaner and lots of times it will take care of the problem.
Is this true?? If so, where do you find this valve/sensor? Has anybody else had a similar problem?
Thanks in advance.
Rick
Yep, my dad's old Mazda 626 threw SES codes about the O2 sensor (and "System too lean") frequently, turned out to be a dirty MAF... though his car's issues still aren't fully resolved
The MAF sensor is inside a tube in the intake tubing, it has a wiring harness with a 6-pin-wide connector. Remove that tube (requires removing the airbox/etc.), and see if you can spray down the small wire inside there with some Air Intake/Throttle Body cleaner (carburetor cleaner may work...)
Be very very careful, as it is a very delicate sensor. Don't touch it with anything and don't spray it too hard. Also, I had to spray through some metal mesh guard that sits in front of it, so it might be a little tricky.
The MAF sensor is inside a tube in the intake tubing, it has a wiring harness with a 6-pin-wide connector. Remove that tube (requires removing the airbox/etc.), and see if you can spray down the small wire inside there with some Air Intake/Throttle Body cleaner (carburetor cleaner may work...)
Be very very careful, as it is a very delicate sensor. Don't touch it with anything and don't spray it too hard. Also, I had to spray through some metal mesh guard that sits in front of it, so it might be a little tricky.
Member
Joined: Sep 2003
Posts: 73
Originally Posted by spirilis
Yep, my dad's old Mazda 626 threw SES codes about the O2 sensor (and "System too lean") frequently, turned out to be a dirty MAF... though his car's issues still aren't fully resolved
The MAF sensor is inside a tube in the intake tubing, it has a wiring harness with a 6-pin-wide connector. Remove that tube (requires removing the airbox/etc.), and see if you can spray down the small wire inside there with some Air Intake/Throttle Body cleaner (carburetor cleaner may work...)
Be very very careful, as it is a very delicate sensor. Don't touch it with anything and don't spray it too hard. Also, I had to spray through some metal mesh guard that sits in front of it, so it might be a little tricky.
The MAF sensor is inside a tube in the intake tubing, it has a wiring harness with a 6-pin-wide connector. Remove that tube (requires removing the airbox/etc.), and see if you can spray down the small wire inside there with some Air Intake/Throttle Body cleaner (carburetor cleaner may work...)
Be very very careful, as it is a very delicate sensor. Don't touch it with anything and don't spray it too hard. Also, I had to spray through some metal mesh guard that sits in front of it, so it might be a little tricky.
I measured (backprobed) the output signal of the MAF sensor, it shoud go up from 1 V to approx 3 V when the rpms go up, but it does not...
Newbie - Just Registered
Joined: Nov 2003
Posts: 1
Have a 2002 with 45K. The MAF went out without any hard driving. I did some research and this is what I found:
http://www.bba-reman.com/throttle_body.htm
Total cost is:
$80 tow fee
$90 diagnostic test
$480 New MAF
$140 Labor Hours (still to be determined)
http://www.bba-reman.com/throttle_body.htm
Total cost is:
$80 tow fee
$90 diagnostic test
$480 New MAF
$140 Labor Hours (still to be determined)
Member
Joined: Sep 2003
Posts: 73
Originally Posted by bradqr
Have a 2002 with 45K. The MAF went out without any hard driving. I did some research and this is what I found:
http://www.bba-reman.com/throttle_body.htm
Total cost is:
$80 tow fee
$90 diagnostic test
$480 New MAF
$140 Labor Hours (still to be determined)
http://www.bba-reman.com/throttle_body.htm
Total cost is:
$80 tow fee
$90 diagnostic test
$480 New MAF
$140 Labor Hours (still to be determined)
Sorry to hear about all these costs. If I lived in a city with a decent public transportation system, and my MAF repair could wait for a week, i would have bought a new MAF from:
http://www.nissan-auto-parts-dealer.com/
($100 savings compared to the local dealer price), and definitely done it by myself, saving on labor - there are only 2 screws you need to take out to replace the thing, and nothing else is in the way.
Senior Member
Joined: Sep 2003
Posts: 270
Originally Posted by bradqr
Have a 2002 with 45K. The MAF went out without any hard driving. I did some research and this is what I found:
http://www.bba-reman.com/throttle_body.htm
Total cost is:
$80 tow fee
$90 diagnostic test
$480 New MAF
$140 Labor Hours (still to be determined)
http://www.bba-reman.com/throttle_body.htm
Total cost is:
$80 tow fee
$90 diagnostic test
$480 New MAF
$140 Labor Hours (still to be determined)
Member
Joined: Sep 2003
Posts: 73
One important lesson I've learned this past week - when attempting to clean your MAF sensor, NEVER TOUCH the wires that are inside of the plastic tube. I happened to touch them while cleaning and the result was - a broken filament that senses the air flow. Hence, a $500 repair.
Originally Posted by MaScott
One important lesson I've learned this past week - when attempting to clean your MAF sensor, NEVER TOUCH the wires that are inside of the plastic tube. I happened to touch them while cleaning and the result was - a broken filament that senses the air flow. Hence, a $500 repair.
cause if memory serves me right, most of us know that yes, the dealer does charge $500+ for a new MAF, but you can avoid all that by simply getting the sensor INSIDE the MAF housing. that piece only costs $75 and is the piece that you need to replace.
yes, if you can't go above 2k rpm w/out having trouble, then you do have an MAF issue. the dealership SHOULD replace it if you're within warranty, but if not, then order the sensor only for $75 (Dave Burnette at south shore nissan 888-254-6060) and replace it yourself.
Senior Member
Joined: Jul 2001
Posts: 151
Originally Posted by PoLo
are we all talking about the SENSOR only.
cause if memory serves me right, most of us know that yes, the dealer does charge $500+ for a new MAF, but you can avoid all that by simply getting the sensor INSIDE the MAF housing. that piece only costs $75 and is the piece that you need to replace.
yes, if you can't go above 2k rpm w/out having trouble, then you do have an MAF issue. the dealership SHOULD replace it if you're within warranty, but if not, then order the sensor only for $75 (Dave Burnette at south shore nissan 888-254-6060) and replace it yourself.
cause if memory serves me right, most of us know that yes, the dealer does charge $500+ for a new MAF, but you can avoid all that by simply getting the sensor INSIDE the MAF housing. that piece only costs $75 and is the piece that you need to replace.
yes, if you can't go above 2k rpm w/out having trouble, then you do have an MAF issue. the dealership SHOULD replace it if you're within warranty, but if not, then order the sensor only for $75 (Dave Burnette at south shore nissan 888-254-6060) and replace it yourself.
Originally Posted by Spartan5
My service guy and technician told me that the ECM has to be reprogrammed with some software they download after the install of a new MAF. WTF, is this true?
i can blow my maf tonite, put a new sensor in, and the car will be back to normal.
Member
Joined: Sep 2003
Posts: 73
Originally Posted by PoLo
are we all talking about the SENSOR only.
cause if memory serves me right, most of us know that yes, the dealer does charge $500+ for a new MAF, but you can avoid all that by simply getting the sensor INSIDE the MAF housing. that piece only costs $75 and is the piece that you need to replace.
yes, if you can't go above 2k rpm w/out having trouble, then you do have an MAF issue. the dealership SHOULD replace it if you're within warranty, but if not, then order the sensor only for $75 (Dave Burnette at south shore nissan 888-254-6060) and replace it yourself.
cause if memory serves me right, most of us know that yes, the dealer does charge $500+ for a new MAF, but you can avoid all that by simply getting the sensor INSIDE the MAF housing. that piece only costs $75 and is the piece that you need to replace.
yes, if you can't go above 2k rpm w/out having trouble, then you do have an MAF issue. the dealership SHOULD replace it if you're within warranty, but if not, then order the sensor only for $75 (Dave Burnette at south shore nissan 888-254-6060) and replace it yourself.
Originally Posted by MaScott
What is the part number of that INSIDE sensor? Do you know?
he's sold a lot of these. his number is in 1 of my previous posts. very nice guy.
Member
Joined: Sep 2003
Posts: 73
In the meantime...
1. searched www.partsvoice.com, found
22680-AD201 @ $488.19
2. searched www.nissan-auto-parts-dealer.com, found
22680AM600 @ $356.38
226806N201 @ $356.38 and
22680AD201 @ $356.38
nothing close to $75....
1. searched www.partsvoice.com, found
22680-AD201 @ $488.19
2. searched www.nissan-auto-parts-dealer.com, found
22680AM600 @ $356.38
226806N201 @ $356.38 and
22680AD201 @ $356.38
nothing close to $75....
Donating Maxima.org Member
Joined: Mar 2003
Posts: 182
Originally Posted by MaScott
In the meantime...
1. searched www.partsvoice.com, found
22680-AD201 @ $488.19
2. searched www.nissan-auto-parts-dealer.com, found
22680AM600 @ $356.38
226806N201 @ $356.38 and
22680AD201 @ $356.38
nothing close to $75....
1. searched www.partsvoice.com, found
22680-AD201 @ $488.19
2. searched www.nissan-auto-parts-dealer.com, found
22680AM600 @ $356.38
226806N201 @ $356.38 and
22680AD201 @ $356.38
nothing close to $75....
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