Mass air flow sensor
Thread Starter
Heel & Toe
Joined: Mar 2018
Posts: 16
Likes: 1
Mass air flow sensor
I've got a 2004 LeMans commemorative, I would like to remove the mass airflow sensor to clean it. Is it necessary to disconnect the negative battery terminal to do this and if so why.
Racer
Joined: Aug 2015
Posts: 323
Likes: 68
From: Sacramento California
Whenever unplugging electrical connection its a good idea to disconnect the battery. The reason being is when you go to plug/unplug a connection with the battery connected it will cause an arc that can damage the component. There are fuses that should protect this from happening. Sometimes things don't work like they should. So unhooking the battery eliminates this from being a potential problem. That being said I have plug/unplugged components many times without problems.
Burning Brakes
Joined: Feb 2013
Posts: 904
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From: Sacramento, California
As long as it's not running and the key isn't in the ignition it's perfectly safe to unplug the MAF sensor to clean it. CRC MAF cleaner is the best cleaner to use, just don't use carb/throttle body cleaner.
Steve
Steve
Safety Car
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From: Fords, NJ
Le Mans Master
Joined: Mar 2004
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From: Ft. Lauderdale Fl
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Le Mans Master
Joined: Mar 2004
Posts: 8,700
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From: Ft. Lauderdale Fl
This is a real easy job, just did it last weekend. Disconnect the connection, loosed the two large clamps and remove. Spray (without) touching the little wires inside. Spray for three seconds...and repeat.
Replace the two large clamps and reconnect the connector.
That should do it.
The ball buster
Replace the two large clamps and reconnect the connector.
That should do it.
The ball buster
Le Mans Master
Joined: Sep 2013
Posts: 8,900
Likes: 1,074
From: Wisconsin
This is a real easy job, just did it last weekend. Disconnect the connection, loosed the two large clamps and remove. Spray (without) touching the little wires inside. Spray for three seconds...and repeat.
Replace the two large clamps and reconnect the connector.
That should do it.
The ball buster
Replace the two large clamps and reconnect the connector.
That should do it.
The ball buster
Use MAF cleaner spray and do not touch the little wires.
Last edited by JR-01; Mar 28, 2018 at 09:36 AM.
Le Mans Master
Joined: Mar 2004
Posts: 8,700
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From: Ft. Lauderdale Fl
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Safety Car
Joined: Dec 2010
Posts: 3,938
Likes: 498
From: Fords, NJ
Best bang for your buck.
On a side note: I was SURPRISED how much carbon build-up was around the throttle blade before i cleaned it.
Once cleaning was done on both MAS and TB i noticed a huge difference in throttle response.
On a side note: I was SURPRISED how much carbon build-up was around the throttle blade before i cleaned it.
Once cleaning was done on both MAS and TB i noticed a huge difference in throttle response.
Administrator
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Moved to C5 Tech and merged two threads together.
Last edited by Vetteman Jack; Mar 28, 2018 at 11:46 AM.
Thread Starter
Heel & Toe
Joined: Mar 2018
Posts: 16
Likes: 1
This is a real easy job, just did it last weekend. Disconnect the connection, loosed the two large clamps and remove. Spray (without) touching the little wires inside. Spray for three seconds...and repeat.
Replace the two large clamps and reconnect the connector.
That should do it.
The ball buster
Replace the two large clamps and reconnect the connector.
That should do it.
The ball buster
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Also did both ...the throttle body and the MAS. Much smoother idle and throttle response.