MkII idling observation
Discussion
My fantastic car has now done 2500 miles. One thing new over the MkI, oh, err, the Tuscan is that I've noticed the idle sometimes hunts. It can get bad enough that the car can stall. But, if I leave the car idling after the commute home for 2-3 minutes it suddenly starts idling back on 700 rpm dead and the problem goes away (for a number of weeks).
It's not like the idle rpm dropping on my previous car. Anyone else noticed this ?
Cheers,
Andy.
It's not like the idle rpm dropping on my previous car. Anyone else noticed this ?
Cheers,
Andy.
Hello Andy,
You will find my experience “explained” in Lady Di's forum:” A year in ........."
Had the same problem again recently and pieces are falling together concerning the cause.
When?
1. when driving slowly with the A/C on
2. sometimes when driving slowly immediately after some heavy accelerations
3. in very slow traffic
In these circumstances IMHO the motor management system supplies to many fuel to the engine resulting in irregular RPM’s (500-800)
The engine stalls – restart – keeping op the rev’s by the throttle – followed by one small pause of inattention and the engine stalls again!!!!
So each restart or unnecessary blip of the throttle gives the engine “unusable” fuel and thereby irregular RPM’s
Last time it happened I was so pissed of I took her to the highway, went far over the speed limit, got back and the problem disappeared quickly.
I’m BEGINNING to understand why a car is feminine in England!
Koen
Question:"Is it a privilege of the 4.0L version?"
>> Edited by engelborghs on Monday 15th August 23:13
You will find my experience “explained” in Lady Di's forum:” A year in ........."
Had the same problem again recently and pieces are falling together concerning the cause.
When?
1. when driving slowly with the A/C on
2. sometimes when driving slowly immediately after some heavy accelerations
3. in very slow traffic
In these circumstances IMHO the motor management system supplies to many fuel to the engine resulting in irregular RPM’s (500-800)
The engine stalls – restart – keeping op the rev’s by the throttle – followed by one small pause of inattention and the engine stalls again!!!!
So each restart or unnecessary blip of the throttle gives the engine “unusable” fuel and thereby irregular RPM’s
Last time it happened I was so pissed of I took her to the highway, went far over the speed limit, got back and the problem disappeared quickly.
I’m BEGINNING to understand why a car is feminine in England!
Koen
Question:"Is it a privilege of the 4.0L version?"
>> Edited by engelborghs on Monday 15th August 23:13
Ditto as Koen said.
Mine has been adjusted several times. Sometimes it will last for only a couple of miles or less before the revs play up, or like at present, I have been driving for a few weeks with only the very occasional drop.
The trouble is that all the dealers seem to have different opinions as to the cause of the problem. I have been told everything from faulty throttle springs to fuel flooding which confuses the ecu.
As now at least four or five people have commented on the same problem, you would think there should be a definative cause and cure.
Di
Mine has been adjusted several times. Sometimes it will last for only a couple of miles or less before the revs play up, or like at present, I have been driving for a few weeks with only the very occasional drop.
The trouble is that all the dealers seem to have different opinions as to the cause of the problem. I have been told everything from faulty throttle springs to fuel flooding which confuses the ecu.
As now at least four or five people have commented on the same problem, you would think there should be a definative cause and cure.
Di
Had the same problem with my T350c.
The dealer checked most things including the cleaning of a sensor that monitors the flywheel (don't even know what a flywheel is
)? Although they were still not convinced it would solve the problem.
Has not stalled since but still get the odd blip when stationery.
As said a good blast down the motorway seems to improve things.
The dealer checked most things including the cleaning of a sensor that monitors the flywheel (don't even know what a flywheel is
)? Although they were still not convinced it would solve the problem. Has not stalled since but still get the odd blip when stationery.
As said a good blast down the motorway seems to improve things.
_DeeJay_ said:
My t350 does that too. However, it's difficult to predict when it will do it (I'm beginning to think it happens when the engine is hot - like when stuck in traffic or after making progress).
It's in for a service at the moment, so we'll see how is when it returns!
Originally my dealer thought it may just need a tune up. The car was due for its 6000 service (Tappets were adjusted as well) but that didn't solve the problem.
Mine is running at 700rmp and occasionally when cold it will dip momentarily to 600rpm then imediatly come back to 7 and for the most part that’s fine but I am also getting this glitch which is almost like the engine will cut unless you give it a blip this especially happens at low speed like a T junction and if you don’t get it quite right the big ends knock.
The garage has been helpful I'm on my 4th ECU each time it’s getting a little better I am informed that when we get to 6K miles this problem will go unfortunately I still have 3K to go. Changing the ECU has each time improved it a little. But not cured the problem.
The garage has been helpful I'm on my 4th ECU each time it’s getting a little better I am informed that when we get to 6K miles this problem will go unfortunately I still have 3K to go. Changing the ECU has each time improved it a little. But not cured the problem.
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