Could there be something wrong with the computer? 1998 v70

[xanthefin]

Buick uses VPW J1850 and Volvos are mostly Slow init (30 sec per module init roughly max and min 2 seconds) ISO 9141-2 and that other one "McMess" which could be faster but ex. ELM327 cannot do it really and i havent met any other than VST using it.


Actron seems use Standard OBDII so you need on ELM327 if you just want replicate it something couple commands like 0100, 03 and 07 to receive Pxxx codes from one single unit which ever supports standard OBDII. Volvos its either ECM or TCM and rest units wont support Standard OBDII even that. Then you can add more commands get more data out of it if you want.


Each command takes 100ms have received message but varies per protocol and message length.


Now if want compare ex. 850 App uses when connecting directly each individual units and their own fault codes and other info it totals like hundred messages when doing multi unit Scan (363 commands as example in one log) and gives wait time on some messages to attempt to have successful init on some units which otherwise just would fail. Single unit Scan its way less commands and time but still. Plus need first setup ELM327 in correct settings make it all possible.



Summarum your V70 is fine.

Hi,

Oh that's interesting, thanks for the info.

What do you think makes this car take so long to get the monitors ready then?
That's another big problem. The monitors take so long to go ready, and even after driving another 100 miles they still are not ready.
I had this problem some months ago too.

Thanks.

This is for 1999 year and newer cars:

Requirements: Engine started while ECT is below 25C and no Fault codes.
-Start the engine
-Shift gear selector to drive
-Accelerate gently to 1500–2000 rpm
-Drive for 5 minutes at 1500–2000 rpm
-Run the engine at idle speed for 70 seconds
-Drive engaged, air conditioning (A/C) off
-Drive for 6 minutes at 1500–2000 rpm
-Run the engine at idle speed for 40 seconds
-Drive engaged, air conditioning (A/C) off
-Drive for 5 minutes at 1500–2000 rpm
-Run the engine at idle speed for 50 seconds
-Drive for 5 minutes at 1500–2000 rpm
-Engine brake from 4000 rpm to approximately 1300 rpm a few times.



There is two drive cycles.

Volvo's pdf about this:
https://usermanual.wiki/Volvo/OBDIIEmis ... 888647/pdf


BUT there is own information going arounds for older generation Volvos so 1998 and before from Volvo TSB:

TSB2230056 (old) and new TNN25-19 are sources for this next posted information by Ozark Lee is my best guess.

viewtopic.php?t=18584

[MrAl]

Buick uses VPW J1850 and Volvos are mostly Slow init (30 sec per module init roughly max and min 2 seconds) ISO 9141-2 and that other one "McMess" which could be faster but ex. ELM327 cannot do it really and i havent met any other than VST using it.


Actron seems use Standard OBDII so you need on ELM327 if you just want replicate it something couple commands like 0100, 03 and 07 to receive Pxxx codes from one single unit which ever supports standard OBDII. Volvos its either ECM or TCM and rest units wont support Standard OBDII even that. Then you can add more commands get more data out of it if you want.


Each command takes 100ms have received message but varies per protocol and message length.


Now if want compare ex. 850 App uses when connecting directly each individual units and their own fault codes and other info it totals like hundred messages when doing multi unit Scan (363 commands as example in one log) and gives wait time on some messages to attempt to have successful init on some units which otherwise just would fail. Single unit Scan its way less commands and time but still. Plus need first setup ELM327 in correct settings make it all possible.



Summarum your V70 is fine.

Hi,

Oh that's interesting, thanks for the info.

What do you think makes this car take so long to get the monitors ready then?
That's another big problem. The monitors take so long to go ready, and even after driving another 100 miles they still are not ready.
I had this problem some months ago too.

Thanks.

This is for 1999 year and newer cars:

Requirements: Engine started while ECT is below 25C and no Fault codes.
-Start the engine
-Shift gear selector to drive
-Accelerate gently to 1500–2000 rpm
-Drive for 5 minutes at 1500–2000 rpm
-Run the engine at idle speed for 70 seconds
-Drive engaged, air conditioning (A/C) off
-Drive for 6 minutes at 1500–2000 rpm
-Run the engine at idle speed for 40 seconds
-Drive engaged, air conditioning (A/C) off
-Drive for 5 minutes at 1500–2000 rpm
-Run the engine at idle speed for 50 seconds
-Drive for 5 minutes at 1500–2000 rpm
-Engine brake from 4000 rpm to approximately 1300 rpm a few times.



There is two drive cycles.

Volvo's pdf about this:
https://usermanual.wiki/Volvo/OBDIIEmis ... 888647/pdf


BUT there is own information going arounds for older generation Volvos so 1998 and before from Volvo TSB:

TSB2230056 (old) and new TNN25-19 are sources for this next posted information by Ozark Lee is my best guess.

viewtopic.php?t=18584

Hi there,

Yeah, that's such a crazy assed routine i don't see why anyone would want to have a car like this.
The funny thing is, i usually didn't have THIS much trouble getting the monitors to flip, all i did was drive it back and forth to the store and eventually, after maybe a few months, it would flip. Also, some of them would flip sooner too, but time not ONE monitor has flipped.
That's also what made me think there was something wrong with the computer or whatever, or someone programmed it to stop doing the diagnostics.

I seriously doubt i could go through one of those drive cycles for the 1998 v70 it's next to impossible if not completely impossible. I'd have to go on the highway later at night probably, and it's not a good idea to keep pulling over either.

[xanthefin]

The thing is sure new to me too as here these are not required to be met to be ready and my car has just "components" monitor so i have very weak experience dealing with these.

It seems Volvo's Flywheel adaptation must be completed before rest monitors diagnostics can be started is one thing to look for in case of Motronic ECM's on these year 98 and earlier cars.


For other examples for toyota there is different driving cycles per emission monitor (so 11 different cycles in total) to make them all ready:
https://justsmogs.com/wp-content/upload ... nitors.pdf


Of course there could be made like guiding thing which guides it fully through step by step but need study more before doing such thing.

[MrAl]

The thing is sure new to me too as here these are not required to be met to be ready and my car has just "components" monitor so i have very weak experience dealing with these.

It seems Volvo's Flywheel adaptation must be completed before rest monitors diagnostics can be started is one thing to look for in case of Motronic ECM's on these year 98 and earlier cars.


For other examples for toyota there is different driving cycles per emission monitor (so 11 different cycles in total) to make them all ready:
https://justsmogs.com/wp-content/upload ... nitors.pdf


Of course there could be made like guiding thing which guides it fully through step by step but need study more before doing such thing.

Hi again,

Oh ok, well thanks for the info you provided already.

Yeah i was reading about that flywheel thing. I never had to deal with that before and there is no trouble code coming up.
I wonder now, if there is a sensor for that that does not show up in the OBD2 trouble codes. If the sensor was bad it would never complete that flywheel thing.

So you are saying that a lot of cars are hard to get 'ready' ?
Geeze, what did the gov do to us with automobiles these days. I understand it is to make things more convenient for THEM during inspection. Isn't that just wonderful.
So again we pay for that 1 out of 100 or even 1 out of 1000 that cheat on their inspection emissions when the car does not have OBD2.

[abscate]

This leads me to believe there is and always has been something wrong with the computer in my 1998 v70

True. It’s not a 1999

Kaplunk, crash

[MrAl]

This leads me to believe there is and always has been something wrong with the computer in my 1998 v70

True. It’s not a 1999

Kaplunk, crash

Hi Steve,

Someone else i talked to about this problem said maybe the computer has to be "reflashed".
I guess that reprograms the non-volatile memory?

[abscate]

Don’t mess with that. There is more folklore and made up crap about ECUs than Area 51

[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.

[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?

[erikv11]

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