Could there be something wrong with the computer? 1998 v70

[MrAl]

Here's a good post, with your drive cycle:
https://www.brickboard.com/AWD/volvo/14 ... ccess.html

And another one:
viewtopic.php?t=11023

Hello there,

Thanks for the info.

I don't think I could do all that though. I might be able to do the flywheel thing, but I don't think I would want to do it without having some way to test to see if it got through it or not. I would be dumb to drive following all that for the flywheel and still not know if it is ready or not.
This means I need a way to be able to test to see if the flywheel is 'ready' or not.
As some of the other readers suggested, this is completely and utterly ridiculous. It's like a child's game of hide and seek, ready or not, here I come. Just plain stupid.

I can't help but think that this is just another case of government making rules that have absolutely nothing to do with the betterment of society.

[erikv11]

You're welcome!

Oh wait, is there a new "main problem" now? Shoot.

[xanthefin]

I did cut extra text down for you to do all driving during week end. I think by looking it should take couple hours max.


Drive where is downhill to reach Flywheel adaption as its only doing it while ECM is in fuel cut off mode, throttle closed. And do couple down hill "skiing". This could be checked by Live data ECM value then if it got happy or done but not via OBDII standard has PID for this as far i know.



Then move to Drive Cycle(s):
Requirements:
+Fuel level in the car should be above 1/4 and below 3/4 tank and A/C off
+Engine temperature at start must be between + 29°C (84°F) to + 49°C (122°F). If not start engine to warm up over + 29°and then restart engine.


-Drive a normal urban driving cycle for 6 minutes. Accelerate gently where necessary keeping the throttle as steady as possible.
-Safely stop the vehicle and allow the engine to idle for 2 minutes.
Repeating>>
-Drive a normal urban driving cycle for 6 minutes. Accelerate gently where necessary keeping the throttle as steady as possible.
-Safely stop the vehicle and allow the engine to idle for 3 minutes.

-Accelerate normally to a road speed over 45 MPH and try to keep the engine between 1800-2200 RPM. With an automatic transmission select 3rd or 4th gear.
-Drive for 5-6 minutes and keep the throttle pedal as steady as possible.
-Safely stop the vehicle and allow the engine to idle for 3 minutes.
Repeating>>
-Accelerate normally to a road speed over 45 MPH and try to keep the engine between 1800-2200 RPM. With an automatic transmission select 3rd or 4th gear.
-Drive for 5-6 minutes and keep the throttle pedal as steady as possible.
-Safely stop the vehicle and allow the engine to idle for 3 minutes.

-Accelerate the vehicle normally to 1800-2000 RPM and then slow back down to a stop, repeat this step 4 times.



Don't start racing any bmw or Civics during this it will ruin your drive cycle no matter of temptation.

Hi again,

Ok thanks. The problem i see is how will i know if the Flywheel adaption thing is successful.

The main problem with this car is i 'think' that Volvo has no official drive cycle routine for this car. Isn't that true?

I try explain.

So what i shortened there (to be without using VST Volvo tester and other nonrelative steps for you) and mentioned source for it is as i told and referred is from TNN25-19 VOLVO Technical Service Bulletins with subject "Establishing OBDII Readiness Codes" publication shared here by Ozark Lee. Which was meant for Volvo models from 1996 up to 1998 as it did mention.
This source (publication) can be verified by buying Volvo subscription for their technical services online and looking for that publication TNN25-19 and you get same written text for as suggested Drive Cycle for these cars from by themselves Volvo.


I previously before that for 1999 and newer cars i linked directly Volvo own brochery with Volvo logos all over it in that pdf material and their publication material number SP0380 which you can get from Volvo in same manners.


What all i have referred is from Volvo official sources i can find.



For Flywheel Adaptation Status..
If you have ELM327 and Android you can see it ex. via App and going to Live Data of Motronic and check it Flywheel Adaptation Status.
Or other possible readers and service devices which supports it to check if its Ready as status.

[MrAl]

You're welcome!

Oh wait, is there a new "main problem" now? Shoot.

Hi,

Ha ha, yeah that's funny.
The main problem was to get the flywheel thing 'ready', but after reading about that i see you wont know if it is ready or not unless you have a reader that can read that code(s). This means i have to check into that now.
As the next reply after yours states that may answer that question too.

Thanks.

[MrAl]

I did cut extra text down for you to do all driving during week end. I think by looking it should take couple hours max.


Drive where is downhill to reach Flywheel adaption as its only doing it while ECM is in fuel cut off mode, throttle closed. And do couple down hill "skiing". This could be checked by Live data ECM value then if it got happy or done but not via OBDII standard has PID for this as far i know.



Then move to Drive Cycle(s):
Requirements:
+Fuel level in the car should be above 1/4 and below 3/4 tank and A/C off
+Engine temperature at start must be between + 29°C (84°F) to + 49°C (122°F). If not start engine to warm up over + 29°and then restart engine.


-Drive a normal urban driving cycle for 6 minutes. Accelerate gently where necessary keeping the throttle as steady as possible.
-Safely stop the vehicle and allow the engine to idle for 2 minutes.
Repeating>>
-Drive a normal urban driving cycle for 6 minutes. Accelerate gently where necessary keeping the throttle as steady as possible.
-Safely stop the vehicle and allow the engine to idle for 3 minutes.

-Accelerate normally to a road speed over 45 MPH and try to keep the engine between 1800-2200 RPM. With an automatic transmission select 3rd or 4th gear.
-Drive for 5-6 minutes and keep the throttle pedal as steady as possible.
-Safely stop the vehicle and allow the engine to idle for 3 minutes.
Repeating>>
-Accelerate normally to a road speed over 45 MPH and try to keep the engine between 1800-2200 RPM. With an automatic transmission select 3rd or 4th gear.
-Drive for 5-6 minutes and keep the throttle pedal as steady as possible.
-Safely stop the vehicle and allow the engine to idle for 3 minutes.

-Accelerate the vehicle normally to 1800-2000 RPM and then slow back down to a stop, repeat this step 4 times.



Don't start racing any bmw or Civics during this it will ruin your drive cycle no matter of temptation.

Hi again,

Ok thanks. The problem i see is how will i know if the Flywheel adaption thing is successful.

The main problem with this car is i 'think' that Volvo has no official drive cycle routine for this car. Isn't that true?

I try explain.

So what i shortened there (to be without using VST Volvo tester and other nonrelative steps for you) and mentioned source for it is as i told and referred is from TNN25-19 VOLVO Technical Service Bulletins with subject "Establishing OBDII Readiness Codes" publication shared here by Ozark Lee. Which was meant for Volvo models from 1996 up to 1998 as it did mention.
This source (publication) can be verified by buying Volvo subscription for their technical services online and looking for that publication TNN25-19 and you get same written text for as suggested Drive Cycle for these cars from by themselves Volvo.


I previously before that for 1999 and newer cars i linked directly Volvo own brochery with Volvo logos all over it in that pdf material and their publication material number SP0380 which you can get from Volvo in same manners.


What all i have referred is from Volvo official sources i can find.



For Flywheel Adaptation Status..
If you have ELM327 and Android you can see it ex. via App and going to Live Data of Motronic and check it Flywheel Adaptation Status.
Or other possible readers and service devices which supports it to check if its Ready as status.

Hello again,

Oh i see so i just need the right OBD2 reader. That could help a lot.
Here are the possibilities i see now about the flywheel thing...
1. If i read the code and the thing is not ready, then i drive the car as recommended.
2. After that, if the code is ready then that part of it is done, and that might be all it needs.
3. If the code is not ready, then drive that part again.
4. If after 8 tries (that's nuts already though) it is still not ready, then i know something is wrong that needs fixing.

Does that sound right to you?

Thanks for the advice.

[abscate]

If after 8 tries (that's nuts already though) it is still not ready, then i know something is wrong that needs fixing.

Its easy to upset the cycle and stop it from testing, so there is not a magic number of tries that will tell you something is wrong. Exceeding 60 mph will stop the evap cycle for example.
The evap test relies on a lookup table of tank pressures and drop times that is not public, so if it is a really hot day and tank pressures are high, that **might *** be another complicated factor.

This is a non-issue if you keep the battery charged and drive the car the nominal 7500 miles per year that justifies car use. If it sits for most of the year, these problems are usage-pattern.

here is my drive cycle report on Shagg, last inspection. I was fighting a drained battery too, so had to work drive cycle and keep battery on charger to pass NYSI in 2022

THE OXS NON CONTINUOUS took about 100 miles of driving, three or four cycles finding hills to roll down in float.

nspection renewal. Due to battery work had to complete drive cycle
Misfire , fuel , engine went ready on idle
Cat continuous , OXS continuous, HOXS continuous took one drive cycle, 20 miles

Cat non continuous took two cycles 50 miles

Now have OXS NON CONTINOUS AND evap not ready, have 60 liters fuel in tank, a bit too high
Inspection complete

[MrAl]

If after 8 tries (that's nuts already though) it is still not ready, then i know something is wrong that needs fixing.

Its easy to upset the cycle and stop it from testing, so there is not a magic number of tries that will tell you something is wrong. Exceeding 60 mph will stop the evap cycle for example.
The evap test relies on a lookup table of tank pressures and drop times that is not public, so if it is a really hot day and tank pressures are high, that **might *** be another complicated factor.

This is a non-issue if you keep the battery charged and drive the car the nominal 7500 miles per year that justifies car use. If it sits for most of the year, these problems are usage-pattern.

here is my drive cycle report on Shagg, last inspection. I was fighting a drained battery too, so had to work drive cycle and keep battery on charger to pass NYSI in 2022

THE OXS NON CONTINUOUS took about 100 miles of driving, three or four cycles finding hills to roll down in float.

nspection renewal. Due to battery work had to complete drive cycle
Misfire , fuel , engine went ready on idle
Cat continuous , OXS continuous, HOXS continuous took one drive cycle, 20 miles

Cat non continuous took two cycles 50 miles

Now have OXS NON CONTINOUS AND evap not ready, have 60 liters fuel in tank, a bit too high
Inspection complete

Hi Steve,

Is that a 1999?

[xanthefin]

If after 8 tries (that's nuts already though) it is still not ready, then i know something is wrong that needs fixing.

Its easy to upset the cycle and stop it from testing, so there is not a magic number of tries that will tell you something is wrong. Exceeding 60 mph will stop the evap cycle for example.
The evap test relies on a lookup table of tank pressures and drop times that is not public, so if it is a really hot day and tank pressures are high, that **might *** be another complicated factor.

This is a non-issue if you keep the battery charged and drive the car the nominal 7500 miles per year that justifies car use. If it sits for most of the year, these problems are usage-pattern.

here is my drive cycle report on Shagg, last inspection. I was fighting a drained battery too, so had to work drive cycle and keep battery on charger to pass NYSI in 2022

THE OXS NON CONTINUOUS took about 100 miles of driving, three or four cycles finding hills to roll down in float.

nspection renewal. Due to battery work had to complete drive cycle
Misfire , fuel , engine went ready on idle
Cat continuous , OXS continuous, HOXS continuous took one drive cycle, 20 miles

Cat non continuous took two cycles 50 miles

Now have OXS NON CONTINOUS AND evap not ready, have 60 liters fuel in tank, a bit too high
Inspection complete

Good call.

There is Tank system test in Motronic memory too and i just thought as its pretty usual have leaking tank breathing hose it could mess up too these?

[abscate]

Any failed part in the evap system will cause it to both not go ready and eventually pop the appropriate P04xx code

[xanthefin]

Any failed part in the evap system will cause it to both not go ready and eventually pop the appropriate P04xx code

I out of interest check information there is for Motronic M4.4 SAE/ISO diagnostic trouble code table from Volvo all i find about EVAP for P04xx codes.

P0440 EFI-315 EVAP valve leak
P0445 EFI-541 EVAP Valve Signal too high
P0450 EFI-621 Fuel tank pressure sensor Signal faulty.
P0452 --//--
P0453 --//--


*I was wrong / deleted information*