Drive cycle

sir

Well-known member
Feb 25, 2005
92
0
Granite, UT
Im trying to reset d1 computer for emission test.
"Not ready". I tried the drive cycle several times to no avail. Posts on here show how its done but all call for running an engine cold or cool. How can you do this through the full cycle?
 

p m

Administrator
Staff member
Apr 19, 2004
15,617
838
58
La Jolla, CA
www.3rj.org
Where are you located? Your local emission rules may allow for one or two incompletes. My D1 never completes EVAP and catalyst readiness tests - but it is allowed to take the tailpipe test (and passes).
 

sir

Well-known member
Feb 25, 2005
92
0
Granite, UT
Where are you located? Your local emission rules may allow for one or two incompletes. My D1 never completes EVAP and catalyst readiness tests - but it is allowed to take the tailpipe test (and passes).
UT. WONT PASS EVAP OR HEATED O2 SENSORS
 

gimebakmybulits

Well-known member
Dec 11, 2013
1,067
85
Pasadena
Which county are you in? Most seem to allow 2 readiness monitors not set.
When an OBDII vehicle is READY to be inspected, it means that all enable criteria have been met for each of the monitors. If the MIL is off and no DTCs are present, 1996 through 2000 model year vehicles can pass with as many as 2 readiness monitors set at “NOT READY”. 2001 and newer model year vehicles are only allowed to have 1 readiness monitor set at “NOT READY” in order to pass.
 

sir

Well-known member
Feb 25, 2005
92
0
Granite, UT
Which county are you in? Most seem to allow 2 readiness monitors not set.
When an OBDII vehicle is READY to be inspected, it means that all enable criteria have been met for each of the monitors. If the MIL is off and no DTCs are present, 1996 through 2000 model year vehicles can pass with as many as 2 readiness monitors set at “NOT READY”. 2001 and newer model year vehicles are only allowed to have 1 readiness monitor set at “NOT READY” in order to pass.
96 disco. Salt Lake county will only allow one. Still working on it.
 

discostew

Well-known member
Sep 14, 2010
7,706
1,015
Northern Illinois
Heated O2's readiness test should happen pretty fast. Ill try to dig up the drive cycles for you. Some of that old shit is hard to find. But I'm sure I have it here someplace,
 

gimebakmybulits

Well-known member
Dec 11, 2013
1,067
85
Pasadena
Just going by what's available online I'd double check where you're getting that info.
Straight from Salt Lake County Health Department
When an OBDII vehicle is READY to be inspected, it means that all enable criteria have been met for each of the monitors. If the MIL is off and no DTCs are present, 1996 through 2000 model year vehicles can pass with as many as 2 readiness monitors set at “NOT READY”. 2001 and newer model year vehicles are only allowed to have 1 readiness monitor set at “NOT READY” in order to pass. If more than 2 monitors are set at “NOT READY”, the vehicle does not fail, it is simply not ready to be inspected. A vehicle will fail if any devices are marked Tamper/Fail on the device check screen and/or the MIL is on and DTCs are present.
 
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