Alfa Romeo Forum banner

1 - 20 of 21 Posts

·
Registered
Joined
·
716 Posts
Discussion Starter #1
Had this happen a couple of times now, although 9/10 times she's fine

Start the car from cold, set off and then have to slow down for a speed bump, go to accelerate again and the car jerks and judders before smoothly pulling away again

Once she's warmed up it seems to be fine

Any ideas?
 

·
Registered
Joined
·
656 Posts
Had this happen a couple of times now, although 9/10 times she's fine

Start the car from cold, set off and then have to slow down for a speed bump, go to accelerate again and the car jerks and judders before smoothly pulling away again

Once she's warmed up it seems to be fine

Any ideas?
Mine used to do similar with some general hesitation, along with rough idle at times, no problem at full beans though. Turned out to be sticking valve on on exhaust cam as head completely coked up. Had new modified head/ inlet manifold work which has resolved issues and runs like a different car now.
 

·
Registered
Joined
·
716 Posts
Discussion Starter #3
So not a small fix then?

Good thing i still have warranty :) back to the dealer she goes for investigation!
 

·
Registered
Joined
·
5 Posts
I had the same problem and this was a misfiring in one cylinder. I changed spark plugs and everything is ok! My Brera 3.2 Q4 done 60 000 km on original spark plugs.
 

·
Registered
Joined
·
716 Posts
Discussion Starter #8
Well i've booked her in for next week to be diagnosed so will report back, hasn't done it in a while tbh
 

·
Registered
Joined
·
716 Posts
Discussion Starter #9
Also noticed today in some slow moving traffic that if i'm in 1st gear but off the gas, so just idling along, the idle is very rough and jerky. In neutral or with the clutch down it's fine however

Just another characteristic or another potential problem?
 

·
Registered
Joined
·
456 Posts
Try a fuel treatment and a few tanks of Shell V-power first. BG 244 is getting good reviews here. I have used it myself and have switched my fuel exclusively to Shell V-Power (£1.48 per litre - ouch!) but my engine is flawless at the moment - excellent in fact! Electrics, brakes, and interior trim is another matter...
 

·
Registered
Joined
·
716 Posts
Discussion Starter #11
Try a fuel treatment and a few tanks of Shell V-power first. BG 244 is getting good reviews here. I have used it myself and have switched my fuel exclusively to Shell V-Power (£1.48 per litre - ouch!) but my engine is flawless at the moment - excellent in fact! Electrics, brakes, and interior trim is another matter...
I've used nothing but V-Power diesel juice since owning her for about 4000miles
 

·
Registered
Joined
·
716 Posts
Discussion Starter #12
Still does it from time to time, Alfa couldn't find anything wrong last time but still charged me £50 for a diagnostics.....back to them it goes again!
 

·
Registered
Joined
·
716 Posts
Discussion Starter #15
Ye i was thinking about taking her to a specialist soon

As for the inlet cleaning, i would hope that using V-Power all the time would stop that treatment being neccessary
 

·
Registered
Joined
·
716 Posts
Discussion Starter #16
Thinking about it, taking it to AHM will obviously cost me money, whereas it has a dealership warranty until December

What do we suggest?
 

·
Registered
Joined
·
2,428 Posts
Thinking about it, taking it to AHM will obviously cost me money, whereas it has a dealership warranty until December

What do we suggest?
I'm not an expert, and I can only speak from my own experience, but I'd consider plugging FES in, and logging the revs, throttle position, turbo boost and EGR valve position. Do some runs when cold to get the juddering, and then when fully warmed up. See if you can find whether the way the EGR valve closes when the load comes on is any different.

Ooorrr. Just get the damn thing blanked off anyway.. :)
 

·
Registered
Joined
·
716 Posts
Discussion Starter #18
You reckon it's EGR Matt?

Planning to have DPF, EGR and remap work done ASAP, just waiting for funds to get sorted
 

·
Premium Member
Joined
·
1,848 Posts
I had judder on acel between 1600-1800 rpm and replaced egr with restrictive gaskets which lessened the judder but didnt erradicate it completely. The only way i got rid of it completely was with a dpf and egr removal / delete. Get it done smudge and u wont be disappointed ;)
 

·
Registered
Joined
·
2,428 Posts
You reckon it's EGR Matt?

Planning to have DPF, EGR and remap work done ASAP, just waiting for funds to get sorted
I needed to get the solenoid valve replaced on mine, as it had similar-ish symptoms. Also had a slight judder when regening. Gradually got worse until the valve stuck open, leaving me with a horrendous flat spot around 2k rpm.

My (uneducated) guess would be that or the manifold swirl valves, but these would be gunked up because of the EGR anyway.
 
1 - 20 of 21 Posts
Top