stone crusher

I had the battery out of the car all winter, went to state inspection on Wednesday and failed. Catalytic Converter, Secondary Air Injection, Evaporator System failed the readiness test. I drove the car about 40 miles and they still show “not ready”. Anyone know what the OBD/Readiness Driving Procedure is for a 99 C5?

Thanks!

Predator

Some of the tests complete quickly, a few of them take a couple hundred miles. I'm sure my f-body is similar to your C5. You just needed to drive your car longer. If you had a scanner like EASE, you could hook it up and know exactly where you stand.

stone crusher

Thanks for the response. I have a scanner, I'll keep and checking

CrazeD_SS

Keep in mind that some of the tests only run after a cold start.

wait4me

iTrader: (10)

you can make it a cold start by removing the coolant temp sensor plug wire and air intake temp sensor wire, let the car run for a minute then plug the coolant temp back in and the air temp sensor, then the car sees that it is warmed up and ready to go.


To make the stuff pass just follow this...
You can force them to do the tests here is the list:
For cats to clear the test,
start at idle while engine hot, and accellerate at 3/4 throttle to 55-60 miles an hour than cruise steady at 55 miles an hour for 7 minutes. Do this three times
for the evap to clear :
drive down the highway at 60 mph for 6 minutes, then let off gas and decell with NO BRAKE down to 20 miles per hour then do it again same pattern.
For the evap system:
can only be done after the oxygen and cats monitors have completed,
Intake air temp is within 7 degrees of engine coolant temp,
Cold start engine coolant temp is < 50 degrees celsius, \
Turn on air conditioning and rear defrost on, idle for 2.5 minutes in drive. Before preceding turn accessories off.
Acceleration to 55 miles an hour at 1/2 throttle air conditioning off.
3 minutes steady state cruise 55 then 60 miles per hour, then decellerate to 20 mpr with no brake.
then accerate at 3/4 throttle to 55 again for 5 minutes
then decellerate with no brake. then that test will pass when this is done.

Air injection test needs a cold start , air conditioning on, rear defrost on, and idle for 2.5 minutes in Drive. before proceeding turn all accessorsy off, then drive 55 mph for 3 minutes and it will pass

SLPSS01

iTrader: (6)

I thought someone here said they don't fail you if the readiness tests aren't complete, you just have to come back ?

https://ls1tech.com/forums/midwestern-members/287724-another-emissions-question.html

ss rally red

iTrader: (8)

In Ga. you do fail for readiness monitors not being set but have 30 days to get them set and recieve 1 free retest. Here you can have 1 not ready for 01 & up cars and 2 not readys for 00 and older cars and still pass.

stone crusher

Do you know which ones? These are the items the failed:

Catalytic Converter
Secondary Air Injection
Evaporator System

stone crusher

In jersey they give you 45 days with 1 free retest. My 99 had 3 not ready.

stone crusher

For cats to clear the test,
start at idle while engine hot, and accellerate at 3/4 throttle to 55-60 miles an hour than cruise steady at 55 miles an hour for 7 minutes. Do this three times.

When I do this do I need to shut the car down in between the three runs?

Thanks, keep you posted

wait4me

iTrader: (10)

Nope just do it three times, you dont need to shut off the car, it will start over and not complete

stone crusher

Thanks!!

slayer_taunu

iTrader: (3)

i know its an old thread, but here is a graphic of the procedure from ALLDATA for anyone doing a search. i looked it up under my F-body, but i assume the procedure is the same for any OBD-II cars.

fuseone

no it wouldnt be the same for all obd2 cars because some got some weird stuff you have to do to run some of the monitors

BigJls1

WOW. thread almost dead for 3 years.............never give up.

slayer_taunu

iTrader: (3)

ok, well its at least going to be the same for LS1 cars (i pulled up the 99 vete chart and confirmed they are the same)

RE AND CHERYL

iTrader: (31)

My recomendation to avoid the above problem is to leave the battery in the car and hook up a Battery tender which constantly cycles the battery. I use one on my Harley and even the garden tractor to keep the batteries fully charged during the winter. It will pay for it's self. The battery in my tractor is 7 years old.

Re'

SilverSmoke

This is such perfect timing, was gonna try and search for this but here it is!! And while I"m posting here, may as well ask the pcm techies...:

I have my car in OLSD in process of tuning (ie cat over temp disabled, etc)... What needs to be active in order to pass all the readiness tests when they scan OBDII?

I'm wondering if I should go back to my old predator tune where everything was on (cats, o2, maf, etc) and then go back to OLSD when passed?

REDGAR

Back from the dead again. I have 2000 silhouette that won't come back at all. I had not seen the cat not ready procedure before so I am off to burn some more gas.

This is absolutely ridiculous what we have to do to pass inspection. Yes the battery was disconnected for 15 minutes.

I am guessing the three times have to be consecutive? Or can it be done over three days?

REDGAR

just did the cat thing 4 times and still reading not ready