Vivaro Power loss
Discussion
Been half heartedly trying to sort this problem out for a friend for a while now but it's getting to the point where I'd like to sort it purly for the challenge.
2003 1.9 Vivaro revs really slowly until it gets to 2300rpm, like major turbo lag. Once over 2300rpm it drives completely normally, it won't even rev in neutral. I ave checked the fuel pressure via my scanned and it was low and unsteady, around 250-290bar. I changed the fuel filter and checked all the fuel lines for leaks, it's now about 300-320bar so good improvement there but still running the same.
The MAF sensor is goosed but I have tried swapping it with a known good one which made no difference, I have read lots of reports saying they don't make that much difference. I didn't reset the error codes when trying the new one but will do so as soon as I get chance to pinch one again to see if it makes any difference.
This looks to be a very common problem but one people don't seem to have been able to come up with a definitive answer to. Any body have any decent ideas please? I don't really want to go buying new bits all over the place, he hasn't got much money so I'd like to hit the problem first time.
2003 1.9 Vivaro revs really slowly until it gets to 2300rpm, like major turbo lag. Once over 2300rpm it drives completely normally, it won't even rev in neutral. I ave checked the fuel pressure via my scanned and it was low and unsteady, around 250-290bar. I changed the fuel filter and checked all the fuel lines for leaks, it's now about 300-320bar so good improvement there but still running the same.
The MAF sensor is goosed but I have tried swapping it with a known good one which made no difference, I have read lots of reports saying they don't make that much difference. I didn't reset the error codes when trying the new one but will do so as soon as I get chance to pinch one again to see if it makes any difference.
This looks to be a very common problem but one people don't seem to have been able to come up with a definitive answer to. Any body have any decent ideas please? I don't really want to go buying new bits all over the place, he hasn't got much money so I'd like to hit the problem first time.
Just been out to get the van out for my friend and pu the scanner on it. The clutch pedal is working okay, the Solus it's seeing the clutch engage and disengage. I have read the cam sensor can cause problems too, would this cause these sort of problems? I can't see how the engine would run at all if the cam sensor was dead.
Ahhh, I see regarding the EGR.
I have read the fuel pressure should be 293bar at tick over. The oil filter and bowl was clean with just a bit of sludge but no metal filings at all.
I am only changing the sensors that are known to have issues, the MAF is fixed at 6.3kg/h (I think, memory not the best) and there is an air temp sensor fault so as that sensor is only a few ££'s might as well do that too.
I have read the fuel pressure should be 293bar at tick over. The oil filter and bowl was clean with just a bit of sludge but no metal filings at all.
I am only changing the sensors that are known to have issues, the MAF is fixed at 6.3kg/h (I think, memory not the best) and there is an air temp sensor fault so as that sensor is only a few ££'s might as well do that too.
Hi All.
Just a quick update. I replaced the air temp sensor, no change. didn't really expect there to be but as it was a fault code I thought best change it for the few ££'s it cost.
Today I received a new MAF sensor, I received a MAP sensor last week after the man on the phone miss heard me. Any way, installed the new MAF, reset the codes and bingo. It runs like a good un. This van has had this problem for 7 years!!!! I am dead pleased to have been able to sort this problem for a good friend.
Thanks all for your input, it's been very helpful.
Just a quick update. I replaced the air temp sensor, no change. didn't really expect there to be but as it was a fault code I thought best change it for the few ££'s it cost.
Today I received a new MAF sensor, I received a MAP sensor last week after the man on the phone miss heard me. Any way, installed the new MAF, reset the codes and bingo. It runs like a good un. This van has had this problem for 7 years!!!! I am dead pleased to have been able to sort this problem for a good friend.
Thanks all for your input, it's been very helpful.
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