Hi Guys, a little update on me looking to buy a car.
I bought a 159 2.0 ti.
Its been brilliant, black with a few extras....getting 48mpg out of it and very smooth.
Went for the 2.0 as everyone i spoke to recommended this over the 1.9
To paraphrase John Shuttleworth, ‘I can’t go back to Alfa Romeo now, that Guilia Veloce’s stunning, but im halfway through by Maser, no i cant go back to Alfa Romeo now...’
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and the usual EGR valve sticking but you can always blank off and delete with a remap.
re: the remap ... I have just had a new EGR valve fitted to my 159 Sportwagon 2.4 Ti (210bhp). Garage fitted a Genuine Alfa Romeo updated ‘restricted’ gasket to help prevent problems repeating themselves ... I do relatively low mileage and short journeys now (car only done 42k miles). However, car now hesitates when pulling away at low revs (judders ... almost like a mis-fire). Should they have done a wee remap or something with this new gasket ??
Any info/experiences gratefully received. Thanks
Thank you very much for your lengthy and detailed reply, v.much appreciated.Try the forced regen first and see if that clears the issue assuming you still have a DPF. If that doesnt clear it and your tick over idle rpm is erratic then then it sounds like the EGR isnt sealing properly.
Thank you. Will bear this in mind. Trying to find time to get car back to garage. Work is crazy at the moment ...If it hasn’t been done, it might be worth getting the long term fuel trims reset. Easy enough to do with the right software (multi ecuscan will do it).
Thank you very much for your lengthy and detailed reply, v.much appreciated.
Garage performed a ‘regen’ when fitting new EGR valve to try and cover all bases?
My idle has been lumpy both before and after this event ... but not to the extent you suggest. You are absolutely correct that the engine idles at 750rpm. Would you believe my 9yr old daughter only yesterday said she could feel ‘thumping’ through the seat !! But despite feeling it, the needle barely moves up or down ... certainly not to the extreme of 600~1000rpm or thereabouts.
Some history: I suffered occasional power loss on longer journeys 2 or 3 years ago. Perhaps 4 or 5 times a year (4000miles/annum). Sounds almost like the forced Regen you talk about, but would entail full throttle being required to maintain minimal speed loss and when selecting 4th, maximum rpm was 2500 and maximum turbo boost 0.4bar (quarter deflection). Would last several minutes and then clear. I lived with it for 18mths, mentioned it to garage during service. He asked if car ever stalled on start up; Yes it did. Not always, but sometimes. He diagnosed faulty EGR valve and fitted new one a year ago. Sweet. Problem never re-emerged until 2 months ago, when power loss occurred again, but never cleared, only getting worse until horrendous misfire, smoke out exhasts with engine eventually dying on me on the M23 at Gatwick !! Recovery truck could not restart (MAF valve code present, MAF disconnected, still would not start). Recovered to garage. New EGR & regen. All sorted ... except for this annoying hesitation when (for example) coasting at low power towards a red light, and then accelerating gently when light goes green.
Lumpy idle has been there since before first EGR valve replaced. Two separate glow plugs replaced. One before first EGR valve, and a different one after. Always used SHELL V-Power to help with injectors etc (doesn’t hurt too much with my lower mileage). Occasionally get ABS fault on start up in winter months (which I have read maybe due to poor battery power in colder temps?). Car is 2009 and probably needs it’s 3rd new battery before this winter ??
Crazy question remains ?? Was I experiencing ‘regen’ with my power loss ?? Does that limit turbo boost and require full throttle to maintain perhaps 65mph on motorway ?? Or am I getting all confused again ??
Really appreciate your time . I am learning a lot ...
BRgds
Disconnect the EGR valve and see if your symptoms stay the same. If they go away then its the EGR valve again by the looks of it stuck in the open position that wont trigger an engine management light.
If neither the EGR test or regen or both cure it then the next thing to check is the swirl pots / flaps.
The actuator rod may have come off or flaps may have broken.
Thank you again for reply and offer of help. Just had short break in Cornwall. 230 Miles each way on mway/dual carriageway so a good run. Car ran well except for this annoying hesitation at lower throttle settings, good fuel econ and plenty of pulling power when full chat. No smoking from exhaust. Have just checked actuator road and all 5 swirl flaps. All appears well and moving nicely ?? When you say disconnect EGR valve, do you mean blank it off completely, or maybe just pull electric connection off ??
J
Just pull the electric connection. It should run better if the EGR is at fault.
If the swirl pots look ok then the other two things that could be causing issue.
Fuel filter. Silver canister on the bulk head. If its collected water in it will cause difficult starting and hesitation at low rpm. If its been serviced in the last 12 to 18 months it should be fine but it has been known to be skipped at service. Ive just changed it on a 156 2.4 20v which has now improved starting from cold.
Check the hoses going to the turbo. They can go soft and get pin holes in them.
Im still inclined to think its your EGR valve sticking open.