How do you clean a mass air flow sensor?
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Joined: Mar 2007
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How do you clean a mass air flow sensor?
I am getting check engine codes PO171 and PO174 (too lean on bank 1 and bank 2) on my 1997 Expedition and have read some of the threads on what to check. One possible cause is a dirty mass air flow sensor.
Can someone tell me what to do to clean this?
Thanks in advance!
Lee G.
Cypress, TX
Can someone tell me what to do to clean this?
Thanks in advance!
Lee G.
Cypress, TX
Posting Guru
Joined: Sep 2004
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Originally Posted by leeg777
Thanks for the replies. I'll give your suggestions a try.
Lee G.
Lee G.
Let me know how it goes. My Expy spit those same codes out and besides bad 02 sensors, the Mass Air cleaning is next on my list. Everything else looks good.
Thanks!
Senior User
Joined: May 2005
Posts: 245
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From: Rochester, NY
Do NOT use Throttle Body cleaner.
Do NOT use Carb/Choke cleaner.
I wouldn't recommend touching it with anything like a Q-Tip.
Use this:
http://www.autobarn.net/maairflsecl1.html
If you spray anything on the platinum wire/plate that leaves a residue and change it's heat dissipating properties, you have just created a nice paperweight.
Do NOT use Carb/Choke cleaner.
I wouldn't recommend touching it with anything like a Q-Tip.
Use this:
http://www.autobarn.net/maairflsecl1.html
If you spray anything on the platinum wire/plate that leaves a residue and change it's heat dissipating properties, you have just created a nice paperweight.
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Freshman User
Joined: May 2006
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They actually make MAF cleaner. Different thasn carb or throttle body cleaner. You have to remove the MAF. spray a few times, let dry andyour off.
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Joined: Dec 2003
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From: Massachusetts
Brake cleaner works great. Fast drying and leaves no residue. Some electrical parts cleaners leave residues as protection. Just have to find the right one.
I agree. DON'T touch it with anything.
I agree. DON'T touch it with anything.
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