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Discussion Starter #1
Hi chaps, first post so not too sure of the way of things on here.
My 2.4 JTD 156 SW has been a bit poorly for a few days the engine feels flat and doesn't pick up as well as it should, I would really appreciate some Layman's advice as I have read many posts on here suggesting items such as EGR MAF MAP etc etc I have no idea what these items are. I have booked it in with a garage and don't want them to blind me with science and huge bills.

Also this may be totally unrelated but when I tried to start it this morning after a night shift everything seemed normal (A/C, glow plugs, radio all came on no warnings from trip computer) but when I turned the key there was nothing, thinking I hadn't put the key in properly I tried again, and again nothing not a sausage, got out walked round the car got back in put key in turned and it fired up as normal!?
It has a new starter motor and battery as of last year and has only done 34,000 mls I am now really nervous of using the car and having two issues at same time is worrying me.
Sorry its a bit long but please any advice would be much appreciated.
:confused:
 

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Always difficult to diagnose problems by remote control, but.....Your non-starting issue sounds like a poor earth, either at the battery end of the cable, or where the cable bolts onto the gearbox.....I'd certainly try this as a first shot.

As for it being "flat" - it could be the MAF - its immediately above your air filter box, a black plastic cylinder about 3" in diameter, with a wiring plug on it......unplug it and see if the performance alters....if its no different, then the MAF is probably faulty.....

Another "most likely" cause is a split in one of the hoses running from the turbo, via the intercooler to the throttle body, or indeed a loose hose.

Thirdly, I understand that the EGR (Exhaust gas recirculation) valves can cause problems...but I've no experience on that so wait for someone cleverer to come along.....
 

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Discussion Starter #3
Cheers I will certainly take a look at the battery as I think I know what one of those looks like, is it possible for it to be Key/imobiliser related ?

As for the MAF ? what does this do ? I feel unsure about disconnecting it.

Many thanks for your reply.

Mower
 

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maf stands for mass air flow and as the name suggests it measures the amount of air flowing past it and adjusts fuel air mixture accordingly
you will do no harm unplugging it for a test
just unplug start engine and drive if it goes better then it is faulty buy a new genuine bosch replacement and away you go
 

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I had something similar (non-start) with my JTD, I'd switch to the MAR position all the lights would go on as normal, however when I came to start it everything died ... it turned out that the battery connector (+ve) had worked loose (after I'd changed the battery a couple of weeks before), disconnected and reconnected and it was fine ...
 

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Your problem sounds to be wholely with the EGR, poor starting can be caused by many things though, it would be worth running a diag on the car to see if there are any lingering codes, if not only to clear old ones so that everything else recorded is a fresh fault.

If your near me I'll hook it up for you.
 

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Discussion Starter #7
I had something similar (non-start) with my JTD, I'd switch to the MAR position all the lights would go on as normal, however when I came to start it everything died ... it turned out that the battery connector (+ve) had worked loose (after I'd changed the battery a couple of weeks before), disconnected and reconnected and it was fine ...
Thanks, seems odd (to me anyway) that on the third attempt it started as if there wasn't problem at all.
My wife has since told me that it happened to her the day before, she just assumed she had not put the key in properly and tried again and it started fine :confused:
 

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i had something similar (non-start) with my jtd, i'd switch to the mar position all the lights would go on as normal, however when i came to start it everything died ... It turned out that the battery connector (+ve) had worked loose (after i'd changed the battery a couple of weeks before), disconnected and reconnected and it was fine ...
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Discussion Starter #9
Just came back from annual service where the car wouldn't allow their diagnostic to fully interrogate the car and hence no faults found! they could only suggest taking it to Alfa specialist or main dealer to hook it up again where they would have the right software.
Does anybody know of a good Alfa specialist in the new forest area ?
 

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Finally got the power problem sorted :) no problem with any sensors/electronic parts etc. It was a small hole in the pipe from an actuator to the Turbo Waste Gate, no pressure, no waste gate, no turbo, NO POWER!
This was tracked down & fixed by Mike Roberts at Roberts Aerospace in Fareham Hampshire I doubt that there is anything this guy doesn't know about Alfa Romeos he is exactly the sort of person you want looking around your car he has a knowledge and passion for the cars.
Also luckily/unluckily while there the car refused to start so he tested the battery while the car was deciding not to start verdict "The Battery Is Knackered" its a Varta and Mike said he has thrown these away after as little as a year on the car mine was 18mths old, he hooked up a mains starter and car started as per usual.
So if you don't mind your garage being a bit, shall we say agricultural, Mike Roberts would be my first contact from now on.
 
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