MAF contaminated?
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Junior User
Joined: Jan 2007
Posts: 79
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MAF contaminated?
Hey guys.
I started experiencing some surging when accelarating and at steady speeds (40-55 mph mostly). It started happenning right about the time I oiled my K&N filter (cannot exactly remember if it was before or after that). Is it possible that I got my MAF contaminated. I tried cleaning it with special MAF cleaner but that did not help. Should I go ahead and replace it?
P.S. (all the plugs, Cops, PCV, fuel filter have been replaced, no CEL light on)
01 Exp EB 4X4
Thanks a lot in advance
I started experiencing some surging when accelarating and at steady speeds (40-55 mph mostly). It started happenning right about the time I oiled my K&N filter (cannot exactly remember if it was before or after that). Is it possible that I got my MAF contaminated. I tried cleaning it with special MAF cleaner but that did not help. Should I go ahead and replace it?
P.S. (all the plugs, Cops, PCV, fuel filter have been replaced, no CEL light on)
01 Exp EB 4X4
Thanks a lot in advance
Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
Why do you say TPS sensor? What info that the OP gave points you that way?
Start by cleaning the MAF sensor with electrical contact cleaner or a throttle body cleaner. If it is really bad, use a q-tip and CAREFULLY scrub the wires with the q-tip and TB cleaner.
Start by cleaning the MAF sensor with electrical contact cleaner or a throttle body cleaner. If it is really bad, use a q-tip and CAREFULLY scrub the wires with the q-tip and TB cleaner.
Junior User
Joined: Dec 2006
Posts: 65
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From: Southern NJ
Just a guess really. Your description about surging when under load (cruising) the TPS should be steady. Almost sounds like it is sending a false signal about the relative position of the throttle.
General rule - check the obvious, simplest thing first.
General rule - check the obvious, simplest thing first.
Logistics Pro
Joined: Oct 2000
Posts: 3,960
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From: All over Texas
Originally Posted by waterman308
Could be many things. Might be throttle position sensor.
Pomial, look back to my original post. If you start replacing random components and sensors, you could be out a fortune and still never lick the problem.
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Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
Originally Posted by waterman308
Just a guess really. Your description about surging when under load (cruising) the TPS should be steady. Almost sounds like it is sending a false signal about the relative position of the throttle.
General rule - check the obvious, simplest thing first.
General rule - check the obvious, simplest thing first.
My guess is that it is something MAF related as the OP said that it started when he oiled his K&N filter. Getting oil on the MAF from over-oiling is quite common. Like I said, make sure that the MAF is clean as a dirty MAF can cause a lot of different problems.
For example, my friend has a CAI on his 96 Mustang GT. When we went to have the car tuned, the tuner was seeing 18:1+ AFR due to a dirty MAF. As soon as I cleaned it, the car cleaned up and it ran much better and he was able to get it tuned.
Check the MAF for oil as I would be willing to bet that it was just over oiled.
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Thread Starter
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Junior User
Joined: Jan 2007
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Hey guys
I cleaned MAF yestrerday and it felt like the vibration was almost gone (not completely)
But today my CEL went on. I checked the codes - P0171,0174
Did I screw up the MAF sensor or what
Any info is greatly appreciated
I cleaned MAF yestrerday and it felt like the vibration was almost gone (not completely)
But today my CEL went on. I checked the codes - P0171,0174
Did I screw up the MAF sensor or what
Any info is greatly appreciated