96 E320 READINESS PROB....
Thread Starter
Junior Member
Joined: Apr 2011
Posts: 29
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From: Tukee Az.
1996 E-320
96 E320 READINESS PROB....
Long time reader, first time poster. I purchased my first MBZ, a 96 E320 with 207k. Ive read alot of the posts on here about drive cycles and reset procedures. I fixed a "secondary air inj" code, and ever since I cannot get these set:
Catalyst Monitor INC
O2 Sensor Mon INC
O2 Heater Mon INC
Ive read on these pages that the Cat Mon wont reset unless it reads the rear O2 sensor. Never have I had a code for O2 sensors, nor do I know the last time they were changed if ever.
Im dying to get this tagged, so I can shake it down.
HELP!
Catalyst Monitor INC
O2 Sensor Mon INC
O2 Heater Mon INC
Ive read on these pages that the Cat Mon wont reset unless it reads the rear O2 sensor. Never have I had a code for O2 sensors, nor do I know the last time they were changed if ever.
Im dying to get this tagged, so I can shake it down.
HELP!
MBWorld Fanatic!
Joined: Oct 2007
Posts: 1,564
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From: SoCal
98 Brilliant Silver E320 Wagon
I found that 3 drive cycles (start cold, warmup, and drive at atleast 45mph for 20 min) over a couple of days reset everything. There are specific MB procedures of the minimum necessary.
Of course, that assumes there are no issues that would cause a code.
Of course, that assumes there are no issues that would cause a code.
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Joined: Apr 2007
Posts: 6,171
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
At 207K miles
you are over 100K miles in excess of the replacement interval for the o2 sensors.
Replace the old tired ones gain back the lost mpg and ready the I/M monitors.
How long have you been driving it since the repair? And did you erase the sec air code or let it clear on its own?
Replace the old tired ones gain back the lost mpg and ready the I/M monitors.
How long have you been driving it since the repair? And did you erase the sec air code or let it clear on its own?
Thread Starter
Junior Member
Joined: Apr 2011
Posts: 29
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From: Tukee Az.
1996 E-320
I did infact change out both O2 sensors yesterday 4/17, and replaced a vac. hose on the secondary air inj. back on the 4/2. I didnt just "erase and run". Ive not had any code come back in over 300 miles of combined street/freeway driving after 4/2. I took the wife the long way to Sams Club, doing a drive cycle at the same time, when I coasted down to 20mph and went to the side of the road she thought something broke!
Last edited by GRINGO Z; Apr 18, 2011 at 10:35 AM. Reason: forgetfull
MBWorld Fanatic!
Joined: Apr 2007
Posts: 6,171
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Per above
almost every state allows at least one if not two not ready I/M monitors.
(Except on new cars that are exempt or required by the state to have the dealer fix emissions problem under new car warranty.)
Especially on older cars. You should pass with no problem.
Be sure you are warmed up before the test,don't do it on a cold engine.
(Except on new cars that are exempt or required by the state to have the dealer fix emissions problem under new car warranty.)
Especially on older cars. You should pass with no problem.
Be sure you are warmed up before the test,don't do it on a cold engine.
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Thread Starter
Junior Member
Joined: Apr 2011
Posts: 29
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From: Tukee Az.
1996 E-320
YES...It passed with only one not set. Thanks for the input folks. Now off to work out the A/C only cold out the right side. Ive got the procedure for pulling those codes.
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Newbie
Joined: Mar 2013
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From: Northern Los Angeles County, California
2000 E320 Sedan (Daily Driver);
In California, All IM Readiness Monitors Must Be Set, Excluding Evaporative Systems
almost every state allows at least one if not two not ready I/M monitors.
(Except on new cars that are exempt or required by the state to have the dealer fix emissions problem under new car warranty.)
Especially on older cars. You should pass with no problem.
Be sure you are warmed up before the test,don't do it on a cold engine.
(Except on new cars that are exempt or required by the state to have the dealer fix emissions problem under new car warranty.)
Especially on older cars. You should pass with no problem.
Be sure you are warmed up before the test,don't do it on a cold engine.
Thanks especially to OhLord for his many posts here and on BenzWorld.org on Drive Cycles, IM Readiness and other useful stuff.
In order to smog test, all IM Readiness monitors must now be set.
Ref.
§ 3340.42.2. Test Methods and Standards for the*On–Board Diagnostic inspection*
C.Starting on or after January 1, 2013, OBD*equipped vehicles shall fail the OBD inspection if any*one of the following conditions occurs as applicable to the*vehicle:*
(9) The vehicle’s OBD system reports incomplete*readiness monitor(s) as specified below:*
(B) Gasoline-powered vehicles model-years 2000*and newer with any incomplete monitors, excluding the*evaporative system monitor;*
(Implementation date was set for March 9, 2015)
At least it helps to know the changing rules.
