The Dreaded Check Engine Light Is On

[pastorscott]

On my 04 burb 5.3 my engine started to run rough at idle about a month ago and would clear up now and then. Now the Check engine light is on. Any idea what it could be.

 

Scott

[RyanZ71]

a number of things.. Spark Plug/wire, 02 Sensor, MAF, is it still under warranty?>

[Taaaaaaahoe?]

Take it ti autozone, pull the codes and let us know what you find..

 

=)

[pastorscott]

Thanks guys

 

no it not under warr anymore 42000 miles. Hey about auto zone. How does that work ? Do you pay them to scan it or what ?

[KCXLT]

I'd guess O2 sensor.

[stillen]

Misfire, my guess.... p030X, x being the cylinder that is misfiring... let us know.....

[pastorscott]

Hey Guys: hate to be a pain, but could it also be my mass air since I do have a K and N. I am VERY carefull to not over oil.

 

and also how do I clear that code

 

Scott

[Taaaaaaahoe?]

Thanks guys

 

no it not under warr anymore 42000 miles. Hey about auto zone. How does that work ? Do you pay them to scan it or what ?

 

 

Nope, its free!! They just want to sell you parts needed sorta thing.

 

I'd do that first before you guess all day long.

 

If YOU want to reset it, disconect the neg batt cable for a few minutes, that will clear the codes.

 

You can clean the mass air sensor with a electrical spray. But I dont see that making the car run rough.

 

I'd get the code, and then we can pin point the problem..

[pastorscott]

This forum is soo good. Thanks Ill let you all know how I make out tuesday

 

 

Scott

[Zembonez]

This forum is soo good. Thanks Ill let you all know how I make out tuesday

 

 

Scott

Clearing the code does nothing. You need to fix the problem to rid yourself of the light. Hopefully it isn't anything serious.

[azswede1960]

So what was the problem? I am going to take the advice and hit AUTOZONE tomorrow morning myself ..... Did it end up having something to do with your K&N drop-in? I put one in myself not too long ago ......

[2017HD]

Clearing the codes will not solve the problem - the codes will be reset as soon as the offending part acts up. You can also pull the computer fuses to clear the codes if you don't want to re-program your radio etc.

 

Going to Autozone sounds like the best idea as it could be any of the items mention above - I had an EGR valve on my 89 Astro set a code and cause rough idle. The rough idle could also be part of the limp home mode that is part of the computer controlled engines these days

[Norseman]

Hey Guys: hate to be a pain, but could it also be my mass air since I do have a K and N. I am VERY carefull to not over oil.

 

and also how do I clear that code

 

Scott

 

Hey, Scott, please do yourself a big favor, get rid of the oiled filter. You can get dry flow filters that will fit the K & N intake. Getting rid of that oiled filter will do wonders in relieving headaches.

 

Please, please, please get rid of the oiled filter, they are not good for the health of your engine.

[ws6_guy]

Hey Guys: hate to be a pain, but could it also be my mass air since I do have a K and N. I am VERY carefull to not over oil.

 

and also how do I clear that code

 

Scott

 

Hey, Scott, please do yourself a big favor, get rid of the oiled filter. You can get dry flow filters that will fit the K & N intake. Getting rid of that oiled filter will do wonders in relieving headaches.

 

Please, please, please get rid of the oiled filter, they are not good for the health of your engine.

 

 

 

+2 on that, so much easier with a dry filter and much safer

[azswede1960]

Hey Guys: hate to be a pain, but could it also be my mass air since I do have a K and N. I am VERY carefull to not over oil.

 

and also how do I clear that code

 

Scott

 

Hey, Scott, please do yourself a big favor, get rid of the oiled filter. You can get dry flow filters that will fit the K & N intake. Getting rid of that oiled filter will do wonders in relieving headaches.

 

Please, please, please get rid of the oiled filter, they are not good for the health of your engine.

 

 

 

+2 on that, so much easier with a dry filter and much safer

 

 

WHAT is the problem with those oil filters & WHAT kind of problems do they produce?