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Dan
Dan, Technician
Category: Chevy
Satisfied Customers: 24574
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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I have a chevy venture 2003 and trying to get the sensor

Customer Question

I have a chevy venture 2003 and trying to get the sensor monitors to set
Submitted: 2 years ago.
Category: Chevy
Expert:  Dan replied 2 years ago.

Hello, my name is***** monitors are you specifically trying to set? Thanks.

Customer: replied 2 years ago.
My scanner says CAT, EVA and HTR are not setting. I have been driving car all afternoon trying to allow them to set.
Customer: replied 2 years ago.
Are you still there?
Expert:  Dan replied 2 years ago.

Have you been doing the specific drive cycles for each or just random driving around? I'm assuming there is no check engine light? Thanks.

Customer: replied 2 years ago.
I am not sure what the specific driving cycles are. Where do I find them for this car?
Expert:  Dan replied 2 years ago.

Give me a couple minutes and I'll upload them. Thanks.

Customer: replied 2 years ago.
Ok that will help
Expert:  Dan replied 2 years ago.

Here are drive cycles, let me know how it goes and pretest conditions must be met. Thanks.
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https://www.dropbox.com/s/7ug6fgootyoseo9/cat.PNG?dl=0
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https://www.dropbox.com/s/1qtu0zmniv3aotk/evap.PNG?dl=0
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https://www.dropbox.com/s/3ndre6qqa94rkql/htr.PNG?dl=0
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Customer: replied 2 years ago.
I am frustrated! The CAT monitor set right away. However, the EVAP and HTR monitors still will not set! I have driven several times now trying to do the EVAP cycle according to the info you sent. I wait for the correct temperatures, I accelerate to 45 mph and stay at that speed for at least 10 mins. I then coast to a stop. No change is evident. The EVAP and HTR monitors do not set. No DTC codes are set either. What else can I try?P
Expert:  Dan replied 2 years ago.

At this point you may be better off paying a shop to use scan tool so they can monitor ECT, MAF, and iat information while doing monitor. Let me know how it turns out or if you have more questions. Thanks.