IPD sale Volvo Parts
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

1996 850 GLT OXS readiness on/off, inspection, intermittent CEL zionx thread from WDYDTYVT diary

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

User avatar
ZionXIX
Posts: 411
Joined: Mon Aug 11, 2014 2:47 pm
Year and Model: 1996 850 Turbo S/W
Location: Texas
Has thanked: 4 times
Been thanked: 28 times
United States of America
ZionXIX

Re: 1996 850 GLT OXS readiness on/off, inspection, intermittent CEL zionx thread from WDYDTYVT diary

Post by ZionXIX » Sun Jul 07, 2019 9:54 pm

More observations today. Started my commute as usual. All emissions codes started as "incomplete". A 20 min drive with a mixture of all driving types in sport mode blasting AC full and 3 gallons of gas in the tank. Catalyst is always 2nd to last to complete and evap completes 30 seconds after I arrive at my destination and idle in park. The process repeats itself on the return trip.



User avatar
abscate
MVS Moderator
Posts: 17631
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 188 times
Been thanked: 598 times
Trinidad & Tobago
abscate

Re: 1996 850 GLT OXS readiness on/off, inspection, intermittent CEL zionx thread from WDYDTYVT diary

Post by abscate » Mon Jul 08, 2019 3:42 am

It’s good to be special. That’s sure is way outside the scope of all the Volvo documentation I’ve read.


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW

User avatar
ZionXIX
Posts: 411
Joined: Mon Aug 11, 2014 2:47 pm
Year and Model: 1996 850 Turbo S/W
Location: Texas
Has thanked: 4 times
Been thanked: 28 times
United States of America
ZionXIX

Re: 1996 850 GLT OXS readiness on/off, inspection, intermittent CEL zionx thread from WDYDTYVT diary

Post by ZionXIX » Mon Jul 08, 2019 7:33 am

Evap cleared on a full tank this morning. Posting pictures of my ecu just to make sure I have the right ones.
Attachments
20190708_081344.jpg
20190708_081335.jpg



User avatar
dyn blin
Posts: 177
Joined: Sun Nov 01, 2015 2:03 pm
Year and Model: 1997 850 Wgn
Location: Sonoma Co, CA
Has thanked: 1 time
Been thanked: 2 times
United States of America
dyn blin

Re: 1996 850 GLT OXS readiness on/off, inspection, intermittent CEL zionx thread from WDYDTYVT diary

Post by dyn blin » Wed Jul 10, 2019 1:09 am

Being in a smog-test state and county, and with the P80's being labled as "potential gross polluters" by our air resources board, I've become pretty consistent at the reset/incomplete/ready cycle. I found this works every time & copied it from an emissions technical resource for our generation of bricks.

Start with the vehicle cool, below 122 degrees F.
Turn off the air conditioning.
Select a location where the driving can be done without violating traffic laws and you can stop safely at the side of the road.

1. Start the engine and accelerate to approximately 1500-2000 rpm.
2. Drive for 6 minutes at 1500-2000 rpm.
3. Stop the vehicle and remain at idle in drive for 70 seconds.
4. Accelerate to at least 45mph and drive for 5 minutes at 1800-2200 rpm.
5. Stop the vehicle and remain at idle in drive for 60 seconds.
6. Accelerate to at least 45 mph and drive for 4 minutes at 1800-2200 rpm.
7. Stop the vehicle and remain at idle in drive for 60 seconds.
8. Park the vehicle and turn off the engine.

This procedure may have to be performed TWICE from a *cold start* to set the readiness codes.


'97 850 GLT Wagon- Driving to see 300k in the rearview

User avatar
abscate
MVS Moderator
Posts: 17631
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 188 times
Been thanked: 598 times
Trinidad & Tobago
abscate

Re: 1996 850 GLT OXS readiness on/off, inspection, intermittent CEL zionx thread from WDYDTYVT diary

Post by abscate » Wed Jul 10, 2019 3:37 am

And don’t exceed 60 mph during any of the above, and don’t exceed 3/4 throttle opening, aka light foot driving


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW

User avatar
ZionXIX
Posts: 411
Joined: Mon Aug 11, 2014 2:47 pm
Year and Model: 1996 850 Turbo S/W
Location: Texas
Has thanked: 4 times
Been thanked: 28 times
United States of America
ZionXIX

Re: 1996 850 GLT OXS readiness on/off, inspection, intermittent CEL zionx thread from WDYDTYVT diary

Post by ZionXIX » Wed Jul 10, 2019 6:26 am

I guess I'm just the exception. I drive it like I stole it. Keep it in sport mode. AC full blast the entire time. Codes clear every time without fail as long as I drive a mix of residential roads and highway. Why is my car so different that it refuses to "remember " the cleared codes?



User avatar
abscate
MVS Moderator
Posts: 17631
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 188 times
Been thanked: 598 times
Trinidad & Tobago
abscate

Re: 1996 850 GLT OXS readiness on/off, inspection, intermittent CEL zionx thread from WDYDTYVT diary

Post by abscate » Wed Jul 10, 2019 6:44 am

Ah, I’ve figured out your magic.

The ECU waits 17?minutes in between tries to reset the EVAP, and tries three times,before it quits and waits for the next cold start cycle

If you take it for a 15 minute spin, then come back and idle, my guess is the AC isn’t still cold and holds compressor long enough for your idle condition to make EVAP ready. If you drove an hour like, that, my guess is EVAP would not go ready

You are still special, though

:lol: :lol:


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW

User avatar
ZionXIX
Posts: 411
Joined: Mon Aug 11, 2014 2:47 pm
Year and Model: 1996 850 Turbo S/W
Location: Texas
Has thanked: 4 times
Been thanked: 28 times
United States of America
ZionXIX

Re: 1996 850 GLT OXS readiness on/off, inspection, intermittent CEL zionx thread from WDYDTYVT diary

Post by ZionXIX » Wed Jul 10, 2019 11:24 am

The last long trip I took was a 300 mile drive with 1 stop for gas and it did clear.



User avatar
abscate
MVS Moderator
Posts: 17631
Joined: Sun Feb 17, 2013 5:54 pm
Year and Model: 99T5 ,99S70,2005V70
Location: NYC, ALBANY NY
Has thanked: 188 times
Been thanked: 598 times
Trinidad & Tobago
abscate

Re: 1996 850 GLT OXS readiness on/off, inspection, intermittent CEL zionx thread from WDYDTYVT diary

Post by abscate » Wed Jul 10, 2019 1:40 pm

You are really special.

No clue.


Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW

User avatar
ZionXIX
Posts: 411
Joined: Mon Aug 11, 2014 2:47 pm
Year and Model: 1996 850 Turbo S/W
Location: Texas
Has thanked: 4 times
Been thanked: 28 times
United States of America
ZionXIX

Re: What did you do to your Volvo today? (now Sticky!!)

Post by ZionXIX » Tue Jul 16, 2019 7:28 am

abscate wrote:
Sun Dec 16, 2018 2:06 am
The two starting points for diagnosis testing are:

Electrical part of ignition switch

Main relay ( tucked under the lip of radiator)
So Abscate, I'm interested in pursuing more diagnostics to determine why my ecu is presumably losing power after every key off event. Is power suppose to be running through the main relay at all times?



Post Reply