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Discussion Starter #1
Hello Dear enthusiasts

I have been working on with a specialist shop on my 2008 GT and its seems everything we have been doing does not fix the problem
completely.
I started out with aP000A and P1013 error message and a rough idle and vibration from the engine. After bringing the car to a specialist shop I
replaced the crank position sensor on the engine (part #230760) and also re-aligned
the timing chain just in case the engine jumped timing. I thought it would solve the issue but no success. The same time we reset the timing
chain we also replaced the spark plugs for new original ones and did an overall service of the car filter changes etc... and still nothing. We ordered another new
crank position sensor to see if the sensor we ordered was bad but no results.

The specialist told me that mechanically everything seems to be fine and that since we sorted the mechanical side it must be the electronics. So just to make sure we
reset the ECU on the car re-wrote the data on the ECU to factory spec once again so it could re-learn the new sensor settings etc.. and turned the car on again but still
rough idling occurred but this time not an engine error code like before (P000A and P1013) but a front headlight failure code even though the lights turned on fine.

It seemed that this was the ECU causing issues so we ordered a rebuilt ECU unit from Maserati and installed it re-registered the vin data etc... and it seemed to have fixed the
rough idling and no check engine light came on after initial installation. The next morning we tried take it on a test drive and now the engine will not crank at all. the dash and navigation screen light up but no cranking noises from the engine not even a sound of the starter motor trying to crank. I thought it was the battery since we have been working on the car without really driving it for a few months now but the battery was not the issue, so after re-scanning the car it showed an ECU error so we are resetting that once again to see if it will have any effect.

My question is could there be any other issues that could cause this sort of malfunction? sensors, wiring, mechanical factors etc... the car is more than 10 years old since it is a 2008 car so I can imagine some electrical issues occurring but it seems so far after 3 months, everything we do can not fix the problem. On an extra note I gave the specialist my spare key (non original OEM key) to work on the car but this should not cause this many issues according to what the specialist told me so I have doubts if it were the key and ECU not communicating properly.

My apologies for the long story but any opinions or comments would be a great help.

Thank you in advance
 

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I would put the old computer back on to see if the symptoms are the same. Then I would check that the key module is working correctly, maybe the immobilizer needs to be programmed.

Also, how did you program the new ECU?
 

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Maserati Quattroporte 4 Evolutione V8 silver/black advanced engine management 415 HP
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My first question is .
What kind of diagnostic tool do you use .
The second is crank sensor .
My TEXA tester will tell me wit P1013, that the camshaft position is out of range .
 

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Discussion Starter #4
I would put the old computer back on to see if the symptoms are the same. Then I would check that the key module is working correctly, maybe the immobilizer needs to be programmed.

Also, how did you program the new ECU?
Thanks for your comment, I have tried to use the the old ECU but no success there as well. I will look into the immobilizer just in case to.
We reprogrammed the ECU by bringing it to a Maserati dealer mechanic we personally know to make sure it is to factory specifications.
 

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Discussion Starter #5
My first question is .
What kind of diagnostic tool do you use .
The second is crank sensor .
My TEXA tester will tell me wit P1013, that the camshaft position is out of range .
Thanks for the response.
The diagnostic tool that I used the first time was a fox well NT510 which I just keep in the car and at the shop my specialist uses a laptop type unit with a communication link I believe it is the MVDCI Kit but will have to check to make sure.
Regarding the code itself I thought it was anything to do with the cam sensor or alignment so we did an all around check so everything should be sorted.


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Immobiliser would show the CODE light on the dash.

There are a number of odd things that need to give PTS, including brake and gear state. It could be something really simple

C
 

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I had similar codes P000A, P0011, P1013 and I replaced the RH oil check valve (solenoid) to solve the problem.
 

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Maserati Quattroporte 4 Evolutione V8 silver/black advanced engine management 415 HP
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If i understand it right , after installing the new ECU the car will not start ?

If so , it’s the rebuild ECU that will not be recognized from the immobilizer.

Also i think that a timing variator is bad.
You can check it with engine running.
You can see in the live data , the angle of all 4 cams .
A good test equipment shows you also the angle that should be set , and so you can compare to your actual data.
 

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Maserati Quattroporte 4 Evolutione V8 silver/black advanced engine management 415 HP
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I had similar codes P000A, P0011, P1013 and I replaced the RH oil check valve (solenoid) to solve the problem.
That’s the first an cheapest thing what i have tried .
 

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Discussion Starter #11
Immobiliser would show the CODE light on the dash.

There are a number of odd things that need to give PTS, including brake and gear state. It could be something really simple

C
Thanks for the comment, I was working on a 2 year maintenance update with new break pads engine mounts but this error came before we worked on this so I am curious as to why this happened, and there was no light on the dash regarding an immobilizer issue.
 

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Discussion Starter #12
I had similar codes P000A, P0011, P1013 and I replaced the RH oil check valve (solenoid) to solve the problem.
Thanks for the reply, there was another 2008 GT in the shop and swapped out the oil check valve but no luck there to... I have been working on other sensor possibilities over the weekend but nothing yet...
 

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Discussion Starter #13
If i understand it right , after installing the new ECU the car will not start ?

If so , it’s the rebuild ECU that will not be recognized from the immobilizer.

Also i think that a timing variator is bad.
You can check it with engine running.
You can see in the live data , the angle of all 4 cams .
A good test equipment shows you also the angle that should be set , and so you can compare to your actual data.
Thanks for the reply yes your understanding is correct we changed the ECU to a new one and now it will not start.
We have been checking the immobilizer compatibility but it seems to be ok.
We did check the variator and no rough sounds on startup and since we re-aligned the timing chain we did not see any issues with this so that should not be the issue. Regarding the live data, it all looked good nothing seemed to be off but with the old ECU it did show some mis-fires in the engine and knocking from the engine so the ECU swap seemed to work when we installed the new ECU, just that the next day the engine did not start so we wokred on resetting the ECU again this sunday. Going to check out if it helped anything on Monday.
 

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Is your P000A & P1013 still haunting you? Lol.. this is contagious after responding on your earlier post.
Mine had the same codes exactly just 2days ago, and i had encountered these codes before and solved it with the replacement of the vvt RH solenoid valve. Based off my servicing records, it had gone through approx 26000km since my last replacement and I had doubts it fails again (finger cross).

Did some troubleshooting by clearing the codes using OBD reader.
Started the engine and immediately check, it shows pending ‘P1013 (RH)’. Then I shut down and unplug the VVT RH solenoid connector, Clear the code. Start the engine again and P1552 (RH vvt disconnect code) lit up as expected but Now P1013 did not Show up. I plug in the vvt connector and repeat the steps above and P1013 lit up again with P1552 goes off as expected. Conclusion at this juncture was VVT solenoid maybe at fault.

I decided to hook up a 12v battery to the RH vvt solenoid without engine running. I could hear the ’tic‘ when voltage applied and ‘tac sounds when voltage was removed. Then I started the engine with the 12v applied to the vvt solenoid. The engine was ‘vibrating & struggling‘ like crazy. Consulted [email protected]zo about my observations and he felt that it is normal and should be working well.

Thoughts about oil pressure affecting in vvt systems especially dirty oil & viscosity. I went for an oil & filter change despite it ran approx 8000km which was due for change anyway. Clear the codes, started up and went for a drive.. check OBD and all is normal, no trouble codes. Really ... keep my finger cross. Meanwhile, hope it helps for those who had similar codes... if not it will be vvt solenoid replacement job again.
 

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Is your P000A & P1013 still haunting you? Lol.. this is contagious after responding on your earlier post.
Mine had the same codes exactly just 2days ago, and i had encountered these codes before and solved it with the replacement of the vvt RH solenoid valve. Based off my servicing records, it had gone through approx 26000km since my last replacement and I had doubts it fails again (finger cross).

Did some troubleshooting by clearing the codes using OBD reader.
Started the engine and immediately check, it shows pending ‘P1013 (RH)’. Then I shut down and unplug the VVT RH solenoid connector, Clear the code. Start the engine again and P1552 (RH vvt disconnect code) lit up as expected but Now P1013 did not Show up. I plug in the vvt connector and repeat the steps above and P1013 lit up again with P1552 goes off as expected. Conclusion at this juncture was VVT solenoid maybe at fault.

I decided to hook up a 12v battery to the RH vvt solenoid without engine running. I could hear the ’tic‘ when voltage applied and ‘tac sounds when voltage was removed. Then I started the engine with the 12v applied to the vvt solenoid. The engine was ‘vibrating & struggling‘ like crazy. Consulted [email protected] about my observations and he felt that it is normal and should be working well.

Thoughts about oil pressure affecting in vvt systems especially dirty oil & viscosity. I went for an oil & filter change despite it ran approx 8000km which was due for change anyway. Clear the codes, started up and went for a drive.. check OBD and all is normal, no trouble codes. Really ... keep my finger cross. Meanwhile, hope it helps for those who had similar codes... if not it will be vvt solenoid replacement job again.
Update: Sharing my findings. As above, done up oil & filter changes, unfortunately it came back again. Hence thought it was the same problem I encountered almost 2 years ago with the same codes by replacing RH vvt oil check valve (can’t believe I am so unlucky to get a short life OCV), and went ahead changed vvt ocv with hydraulic chain tensioner as well. Sadly, that did not solved. Thoughts crossed my mind to use LH camshaft sensor and plugged into RH bank, ....oh indeed no codes for now. Remember to torque down tight on the sensor too. 🙏
 
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