Help
Rock Crawling
Joined: Dec 2015
Posts: 450
Likes: 336
MVS Readers,
Warning this is not S80 content. This is from my other P3 3.2 that happens to wear a LAND ROVER badge.
However I am posting this here because I think all P3's could have this happen to them
P050B Cold Start Ignition Timing performance
Here is what happened
1. My daughter needed to take her cousin to the Airport
2. I check to see how much Fuel was in the tank and confirmed that the engine would start right up (which it did and it ran beautifully for 15 or 20 seconds before I shut it down)
3. 30 minutes later the Cousin arrive and it is time to go.
4. My Daughter starts the Engine and is shaking violently and it sets the check engine light
5. I instruct my daughter to power down the engine and start it a second time (it is still shaking violently)
6. Plan B (My Daughter takes my Audi)
I grab my Autel AL539B and I start the engine and check the data. Only one thing looks out of the ordinary. The Purgevalve (which routes collected vapors from the fuel tank into the engine to burn them off) is open 80% to 90%. Normally the ECU will open the valve at some moment that the user won't even notice.
Here is what I think happened.
A. The fuel vapor recovery system needs to be purged
B. By starting the engine I fooled the ECU into thinking that the engine was Warmish
C. A Warmish engine should be able to run even though extra fuel is entering the intake manifold but my engine was more Coldish than Warmish (Let's call this an edge case)
I've owned my LR2 3.2 with the Volvo Engine since 2008 and this is the first time in 14 years that I needed to start the engine and run it for a brief amount of time and the ECU needed to open the purgevalve. Note: on Garbage day I do start the engine move the vehicle and then shut it down so that I can put the can where the vehicle was but the purgevalve never decided to run when I did this.
This incident happened a few weeks back and it hasn't returned and I've tried to Cold start it; run it for 20 seconds and then start it again 20-30 minutes later and it runs fine.
I suppose that I will get this code again sometime in the next 14 years.
One last thought. If I had been traveling and this had happened to me I would have assumed that I had gotten bad gas. But the reality is that the root cause is actually USER ERROR. In my defense show me where in the manual it says not to do what I did. (If I had REDLINE authority I would add it or maybe I would just let other P3 owners know to be aware of this.........I think I just did that)
Take care
Paul
Warning this is not S80 content. This is from my other P3 3.2 that happens to wear a LAND ROVER badge.
However I am posting this here because I think all P3's could have this happen to them
P050B Cold Start Ignition Timing performance
Here is what happened
1. My daughter needed to take her cousin to the Airport
2. I check to see how much Fuel was in the tank and confirmed that the engine would start right up (which it did and it ran beautifully for 15 or 20 seconds before I shut it down)
3. 30 minutes later the Cousin arrive and it is time to go.
4. My Daughter starts the Engine and is shaking violently and it sets the check engine light
5. I instruct my daughter to power down the engine and start it a second time (it is still shaking violently)
6. Plan B (My Daughter takes my Audi)
I grab my Autel AL539B and I start the engine and check the data. Only one thing looks out of the ordinary. The Purgevalve (which routes collected vapors from the fuel tank into the engine to burn them off) is open 80% to 90%. Normally the ECU will open the valve at some moment that the user won't even notice.
Here is what I think happened.
A. The fuel vapor recovery system needs to be purged
B. By starting the engine I fooled the ECU into thinking that the engine was Warmish
C. A Warmish engine should be able to run even though extra fuel is entering the intake manifold but my engine was more Coldish than Warmish (Let's call this an edge case)
I've owned my LR2 3.2 with the Volvo Engine since 2008 and this is the first time in 14 years that I needed to start the engine and run it for a brief amount of time and the ECU needed to open the purgevalve. Note: on Garbage day I do start the engine move the vehicle and then shut it down so that I can put the can where the vehicle was but the purgevalve never decided to run when I did this.
This incident happened a few weeks back and it hasn't returned and I've tried to Cold start it; run it for 20 seconds and then start it again 20-30 minutes later and it runs fine.
I suppose that I will get this code again sometime in the next 14 years.
One last thought. If I had been traveling and this had happened to me I would have assumed that I had gotten bad gas. But the reality is that the root cause is actually USER ERROR. In my defense show me where in the manual it says not to do what I did. (If I had REDLINE authority I would add it or maybe I would just let other P3 owners know to be aware of this.........I think I just did that)
Take care
Paul
https://www.matthewsvolvosite.com/fo...+valve#p599783
Rock Crawling
Joined: Dec 2015
Posts: 450
Likes: 336
The intake tube will need to come off
https://www.freel2.com/forum/topic32245.html
I replaced mine with only the intake tube removed and it was not fun.
Good luck
Paul
https://www.freel2.com/forum/topic32245.html
I replaced mine with only the intake tube removed and it was not fun.
Good luck
Paul
Rock Crawling
Joined: Dec 2015
Posts: 450
Likes: 336
LR003489 is the part number for the purge valve
I checked my records and I replaced purge valve about a month after the day that it was difficult to start and was running very rough.
That was 30 months ago and the rough running has never returned.
Good luck
Paul
PS other members of this forum have also replaced their purge valve, check with them to see what their symptoms were. And if you replace the valve let us know if it fixes your problem.
I checked my records and I replaced purge valve about a month after the day that it was difficult to start and was running very rough.
That was 30 months ago and the rough running has never returned.
Good luck
Paul
PS other members of this forum have also replaced their purge valve, check with them to see what their symptoms were. And if you replace the valve let us know if it fixes your problem.
Not a single problem since except dead O2 sensors. But that just put up an annoying check engine light.
Rock Crawling
Joined: Dec 2015
Posts: 450
Likes: 336
..........................My car is now undrivable..........
............................IT IS RUNNING SO ROUGH CANT EVEN DRIVE IT..........................
................................It also says something about cold start ignition timing performance!............
............................IT IS RUNNING SO ROUGH CANT EVEN DRIVE IT..........................
................................It also says something about cold start ignition timing performance!............
1. Rough running - the engine was shaking violently at idle
2. Cold start ignition performance - I also got this message
In my case the valve may have got stuck open or the ECU may have decided to open the valve at the wrong moment. I can't be certain. All I know for sure it that my problem wasn't a persistent fault and that I didn't wait for it to be come persistent. I replaced the Purge Valve and I never got either of the symptoms listed above.
Let us know what you decide to do.
Take care
Paul
Recovery Vehicle
Joined: Apr 2019
Posts: 959
Likes: 214
From: Ottawa, Canada
Clearly we are cut from different cloths; a desperate cry for help on Aug 30... and now at Sep 28; still mucking about in a non-scientific, half hazard way. And playing musical parts in the process.
Truly, wishing you the best but is this the right path??
Cheers
Truly, wishing you the best but is this the right path??
Cheers
Thread
Thread Starter
Forum
Replies
Last Post
