CEL after offroad

[runnaz]

For the past several years after I have been on bumpy, dusty roads I will get a CEL within a couple days of coming back to town. When I say dusty, it is very dusty. Every time I get the code scanned it has something to do with an O2 sensor or MAF. Most times I will clean the MAF and it will solve the problem.

Anybody else have an issue like this or know how to eliminate it so it doesn't happen as often?

 

[4runnin83]

MAFs are super super sensitive, anything blocking their reading will through a CEL, try getting a better filter (K&N), versus the paper autozone ones

 

[BlackCat914]

MAFs are super super sensitive, anything blocking their reading will through a CEL, try getting a better filter (K&N), versus the paper autozone ones

FYI, k&n filters are horrible in cars with very sensitive MAF sensors. The tiniest bit of over oiling a filter will cause issues.
I mean, I don't get what you're trying to say. After you're in extreme dusty conditions, you have to clean parts you otherwise wouldnt have to clean under normal circumstances? That makes as much sense as wiping before you poop.

 

[4runnin83]

FYI, k&n filters are horrible in cars with very sensitive MAF sensors. The tiniest bit of over oiling a filter will cause issues.
I mean, I don't get what you're trying to say. After you're in extreme dusty conditions, you have to clean parts you otherwise wouldnt have to clean under normal circumstances? That makes as much sense as wiping before you poop.

Here, I'll put it in coloring book format so you can understand it easier. A K&N filter will catch 90% more of the dust and **** in the air that the paper filter wont. THUS deferring (this means stopping) it from hitting the MAF and throwing the code. And if you don't OVER OIL the filter you won't have an issue with the oil. You're funny.

 

[Dous]

Here, I'll put it in coloring book format so you can understand it easier. A K&N filter will catch 90% more of the dust and **** in the air that the paper filter wont. THUS deferring (this means stopping) it from hitting the MAF and throwing the code. And if you don't OVER OIL the filter you won't have an issue with the oil. You're funny.

LOL, I have a feeling you are going to be spinning your wheels with this argument

 

[JohnsD90]

LOL, I have a feeling you are going to be spinning your wheels with this argument

Over oiling is the the issue with the K&N filters, which is a user error rather than product issue.

 

[BlackCat914]

Here, I'll put it in coloring book format so you can understand it easier. A K&N filter will catch 90% more of the dust and **** in the air that the paper filter wont. THUS deferring (this means stopping) it from hitting the MAF and throwing the code. And if you don't OVER OIL the filter you won't have an issue with the oil. You're funny.

90%!? Golly gee whiz!

Oh, and "deferring" does not mean stopping. Just sayin'.

 

[snow junky]

post codes

 

[Qjake]

I'd agree with the crappy air filter theory, get a quality air filter


K&N Dry filter, oil problem solved :boink:

 

[rayjay]

You mean just running the K&N dry? Are they designed for that? Doesn't seem like a good idea.

 

[Evilmunkey]

For the past several years after I have been on bumpy, dusty roads I will get a CEL within a couple days of coming back to town. When I say dusty, it is very dusty. Every time I get the code scanned it has something to do with an O2 sensor or MAF. Most times I will clean the MAF and it will solve the problem.

Anybody else have an issue like this or know how to eliminate it so it doesn't happen as often?

Ever think to de-carbon your fuel system, throttle body and intake manifold. . :wink2:
Codes are a guide of where to start looking and what else can cause those parts to throw a CEL/Code
Also what kind of scanner are you using to pull these codes, might want to look into getting a better scanner to use other than an Autozone/Advanced Autoparts scanner (POS and very basic)

Also K&N filters are mediocre but do the job, look into other companies that make a dry element stlye (AEM makes one along with a few other companies)

 

[Qjake]

You mean just running the K&N dry? Are they designed for that? Doesn't seem like a good idea.

They make dry filters and they make wet (oil) filters :boink:

Also K&N filters are mediocre but do the job, look into other companies that make a dry element stlye (AEM makes one along with a few other companies)

Agreed there are better filters out there, either way a dry element filter will solve the excessive oil problem

 

[runnaz]

I don't have the codes written down from last time and I haven't had it scanned yet to see what these codes will be this time. I have the basic cheap Fram air filter in it. I just recently cleaned the MAF, throttle body, injectors about 3 months ago. I put seafoam in the gas tank 2 weeks ago. Went out this past week in extremely dusty conditions. Drove it in town the other day and CEL was on. I'll get the codes scanned and post them up.