Clean out sensors
Postmaster
Joined: Oct 2009
Posts: 3,432
Likes: 7
To clean the MAF sensor, there is a specially made cleaner available at auto parts stores. All you do is spray it through. Other cleaners may leave a residue. O2 sensors on the other hand cannot be cleaned, and should be replaced at roughly 80,000 - 100,000 mile intervals. Cleaners may remove some surface deposits, but the sensor element is inside, and usually does not respond one way of the other to be ing cleaned. The kind of deposits that damage the sensors react chemically with the element to render it inert. Cleaning it does not reverse the contamination.
Posting Guru
Joined: Feb 2001
Posts: 1,016
Likes: 1
also a good thing to do is take the black air intake hose off while you have the maf off. wash and scrub out the inside of the air intake hose.
make sure you dry it before putting back on truck.
white dust builds up in these air intake hoses and I think it's either from the paper filter or what the paper filter allows past.
This white powder that is closest to the maf gets moist and causes a short which will cause your truck to misfire. I've had this happen twice on my truck during it's 160,000 miles.
I had issue one time when it was snowing. Snow/moister would enter the system and short out the maf. Cleaning the white powder out of the air instake fixed it. Make sure you clean the air temp sensor in the hose as well.
make sure you dry it before putting back on truck.
white dust builds up in these air intake hoses and I think it's either from the paper filter or what the paper filter allows past.
This white powder that is closest to the maf gets moist and causes a short which will cause your truck to misfire. I've had this happen twice on my truck during it's 160,000 miles.
I had issue one time when it was snowing. Snow/moister would enter the system and short out the maf. Cleaning the white powder out of the air instake fixed it. Make sure you clean the air temp sensor in the hose as well.
Hotshot
Joined: Jan 2004
Posts: 19,762
Likes: 1,079
From: St Louis
Take the MAF sensor COMPLETELY out so you can actually see the two small wires. Clean the carefully with the sensor cleaner by spraying them. Air dry them carefully. m Be careful, if you damage the wires, you will be replacing the sensor at a substantial expense.
Leave the O2 sensors alone unless you are replacing them.
Leave the O2 sensors alone unless you are replacing them.
Postmaster
Joined: Oct 2009
Posts: 3,432
Likes: 7
At 160,000+ miles, you should replace the O2 sensors anyway. They are well past due. They should be going onto their second replacement rather than the first. If you leave them in there too long, they have a tendency to seize in place, then when they do eventually completely fail, they will be even more difficult to replace. The longer they are left in, the more likely to seize they are.
Thread
Thread Starter
Forum
Replies
Last Post
gman97005
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
1
Oct 25, 2013 03:38 AM
