Hi Friends,
I have posted technical question on FIAT Forum here:
http://www.fiatforum.com/panda-classic/ ... start.html
I believe that here there are a lot of specialist who knows FIAT's Magneti Marelli ECU's.
Maybe somebody has seen similar problems and may helps.
Thank you in advance
Regards
Mariusz
Panda with LPG sometimes won't start
Re: Panda with LPG sometimes won't start
Hi,
still no help
Here is detailed description of the problem:
1. Description
I have a sequential LPG injection in my Panda 1.1 2005. It works very good, car goes without problems many weeks, months, but sometimes car won't start on petrol (octane).
I have to turn engine 5, 6 minutes and after that engine starts and works PERFECTLY. If engine starts, works about 30 seconds, stops again. Next start is easier but not immediatelly as well.
Later same day engine starts good if breaks between stop and start aren't too long - this is why analyse in service stations is very difficult. If engine is cold back, problems occurs again.
Next day engine starts after few turns, and works very good from start.
This was the same in August - about 15 C deg morning, and now - about -5 C deg morning.
Many servicemans said that this is because of LPG installed in car.
Is it true?
And WHY next day engine starts without any problems and works good many weeks?
Is it possible that my ECU (Magneti Marreli 4AF/4EF/59F/5AF EOBD INJ) "seens" LPG and changes start parameters?
I have checked many times petrol pressure befor firing car. After pressing a valve on the bar, petrol goes very high. Fiat ECUscan software (free version) shows good pressure as well and no errors. Only exception - sometimes missfire only error - this is clear - engine won't start.
Please help me - if ECU parameters may changes while using LPG, I will buy full version of ECUScan and I will do autoadaptation myself each month. But I would like to know that this is true ( I don't belive in it - many of my friends using LPG in Toyota's, Audi's, Opel's and everything is ok.
I have checked two different LPG injection software in the same hardware - the same effect.
While engine works on idle, petrol injection times on petrol are very similar to petrol injection times on LPG. Differences are not bigger than 5 percent.
Any suggestions and/or knowledge about this ECU?
2. Another question direct to Multiecuscan
Because of time and money I have spent looking for solution I would ask:
Does Multiecuscan has possibilty to force "Injection maps Reset" in ECU mentioned above?
If yes, I will buy it and check it myself before next checking wiring, sesnsors, etc.
Thank you in advance for help .
Regards
Mariusz
still no help
Here is detailed description of the problem:
1. Description
I have a sequential LPG injection in my Panda 1.1 2005. It works very good, car goes without problems many weeks, months, but sometimes car won't start on petrol (octane).
I have to turn engine 5, 6 minutes and after that engine starts and works PERFECTLY. If engine starts, works about 30 seconds, stops again. Next start is easier but not immediatelly as well.
Later same day engine starts good if breaks between stop and start aren't too long - this is why analyse in service stations is very difficult. If engine is cold back, problems occurs again.
Next day engine starts after few turns, and works very good from start.
This was the same in August - about 15 C deg morning, and now - about -5 C deg morning.
Many servicemans said that this is because of LPG installed in car.
Is it true?
And WHY next day engine starts without any problems and works good many weeks?
Is it possible that my ECU (Magneti Marreli 4AF/4EF/59F/5AF EOBD INJ) "seens" LPG and changes start parameters?
I have checked many times petrol pressure befor firing car. After pressing a valve on the bar, petrol goes very high. Fiat ECUscan software (free version) shows good pressure as well and no errors. Only exception - sometimes missfire only error - this is clear - engine won't start.
Please help me - if ECU parameters may changes while using LPG, I will buy full version of ECUScan and I will do autoadaptation myself each month. But I would like to know that this is true ( I don't belive in it - many of my friends using LPG in Toyota's, Audi's, Opel's and everything is ok.
I have checked two different LPG injection software in the same hardware - the same effect.
While engine works on idle, petrol injection times on petrol are very similar to petrol injection times on LPG. Differences are not bigger than 5 percent.
Any suggestions and/or knowledge about this ECU?
2. Another question direct to Multiecuscan
Because of time and money I have spent looking for solution I would ask:
Does Multiecuscan has possibilty to force "Injection maps Reset" in ECU mentioned above?
If yes, I will buy it and check it myself before next checking wiring, sesnsors, etc.
Thank you in advance for help .
Regards
Mariusz
Re: Panda with LPG sometimes won't start
Dear Mariusz,
When you install to LPG to car, Car ECU can make new road map, hot start cold start. After trip when you park the car, car ECU standby on hot start, but when you start car it is cold.. So , i don't know which brand LPG on your car, if BRC i think possible adjustment for cold start..
Other suggestion, before park car ex. 100 -200 mt ago, switch to Fuel , and park with Fuel position and morning try it.
MURAT
When you install to LPG to car, Car ECU can make new road map, hot start cold start. After trip when you park the car, car ECU standby on hot start, but when you start car it is cold.. So , i don't know which brand LPG on your car, if BRC i think possible adjustment for cold start..
Other suggestion, before park car ex. 100 -200 mt ago, switch to Fuel , and park with Fuel position and morning try it.
MURAT
Re: Panda with LPG sometimes won't start
Hi Murat,
interesting idea, thank you for hint.
I will check it asap.
Unfortunatelly currently Panda starts perfectly, even by -18 degress C...
Mariusz
interesting idea, thank you for hint.
I will check it asap.
Unfortunatelly currently Panda starts perfectly, even by -18 degress C...
Mariusz