Drive cycle

Asked by Oct 02, 2016 at 01:53 AM about the 2003 Chevrolet Impala LS

Question type: Maintenance & Repair

I reset the ODB2 after a repair, now after 20p miles
driven in varying conditions it syill shows the
catalyst and ERG monitors still showing  "not
ready".  What do I need to do to help this?

2 Answers

315

sometimes it can take a good amount of driving to get them to read ready. common problem with those impalas from what i know is the EGR passage way becomes clogged with carbon build up on the intake manifold and EGR connection point. what repair did you recently have done to it?

56,855

In order to get those two readiness monitors to set your gas tank must be between 3/4 and 1/4. No more and no less. If the gas gauge is reading higher than 3/4 or lower than 1/4 the computer won't run the diagnostics on those systems to set the readiness monitors. If you're concerned about an emissions inspection you can pass with 1, but only 1, readiness monitor not set. HTH. -Jim

Your Answer

Add photo

Related Questions

Search Chevrolet Impala Questions

Chevrolet Impala Experts

#1 Danny Wang
Danny Wang
Reputation 1,590
#2 Js08016
Js08016
Reputation 1,490
#3 FordNut
FordNut
Reputation 1,380
View All

Related Models For Sale

Used Chevrolet Malibu
1,157 Great Deals out of 80,725 listings starting at $2,495
Used Chevrolet Camaro
629 Great Deals out of 39,687 listings starting at $2,995
Used Honda Accord
1,263 Great Deals out of 78,832 listings starting at $969
Used Nissan Maxima
513 Great Deals out of 25,501 listings starting at $1,500
Used Nissan Altima
1,346 Great Deals out of 86,044 listings starting at $695
Used Toyota Camry
1,523 Great Deals out of 101,602 listings starting at $700
Used Chevrolet Tahoe
1,084 Great Deals out of 32,099 listings starting at $1,495
Used Chevrolet Silverado 1500
2,761 Great Deals out of 150,214 listings starting at $1,259
Used Ford Taurus
364 Great Deals out of 22,720 listings starting at $1,499
Used Ford Mustang
718 Great Deals out of 39,137 listings starting at $1,000

Used Cars For Sale

2017 Chevrolet Impala LS For Sale
3 Great Deals out of 1,426 listings starting at $18,438
2016 Chevrolet Impala LS For Sale
35 Great Deals out of 1,042 listings starting at $14,999
2015 Chevrolet Impala LS For Sale
11 Great Deals out of 526 listings starting at $12,995
2014 Chevrolet Impala LS For Sale
14 Great Deals out of 393 listings starting at $10,500
2013 Chevrolet Impala LS For Sale
35 listings starting at $5,895