Check engine light

BILL DENZ

MEMBER
2002 PONTIAC AZTEK
3.4L
6 CYL
2WD
AUTOMATIC
125,000 MILES

My check engine light keeps going on, but after a while sometimes while driving it will go off again or when sometimes I blow in the cab for the gasoline. Do not know about the exhaust system because once was cleaned and engine light went off for a while but has begun again turning on.

2 Replies

MHPAUTOS

MECHANIC
31,937 POSTS

There will be a code logged in the PCM even if the light has gone off. Go get a scan and post back what the code is for further assistance.

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Friday, January 5th, 2018 AT 5:32 PM

RENEE L

ADMIN
1,257 POSTS

Hello BILL DENZ,

I am sending you a link that if you decide to conduct the scan yourself will be a great help to you. The link features an article with written step by step instructions and pictures explaining how to do the scan yourself, also I have included a link to our YouTube channel with a how to video on code scanning.

This is applicable even if your check engine light is not on.

Most scanners are inexpensive to purchase, you can purchase one online from sites like Amazon.com

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://youtu.be/YV3TRZwer8k

Once you have the code number(s) please get back to us so that we can further assist you. We are always happy to help.

Thank you for visiting 2CarPros.com.

Kindest regards,

Renee
Admin