HELP!! MY 156 2.5V6 is running badly - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Thread Tools Search this Thread
(Post Link) post #1 of 3 Old 09-12-09 Thread Starter
Status: -
Join Date: Sep 2009
Location: United Kingdom
County: Bristol
Posts: 4
Crazed HELP!! MY 156 2.5V6 is running badly

Hi guys this is my first post, but I have been reading on here for the past year so helpfull!!

I have a 2001 y reg 156 2.5 V6 which i love to bits but recently I have a large whole in my pocket

I bought the car just over a year ago and the first 10 months of owning was a dream. Then throttle problem occurred. I kept stalling and lost loads of power. So after some research (thanks guys) i did a throttle reset problem cleared for a week then came back. I took the connectors for the tjhrottle apart sprayed with some WD40 and hey presto it worked, good times. Anyway a week before my MOT my windshield smashed new one fitted. I sent the car for the MOT hoping that the strange noise from my suspension when damp or cold didnt fail the car. (how wrong I was).

Any way turns out I needed this
-New steering Rack
-New Upper wishbones
-New Discs and pads
-4 New tyres
-New headlights
-New anti roll drop links

Couple of other jobs aswell

Anyway i wayed up buying a new car and looked at the garages quote £1600+VAT
I managed to source alot of the parts cheaply and did everything myself except the rack.
(with help from this and other sites) still cost me 800 quid though.

Anyway it took about 6 weeks to sort it. I had the rack fitted last car sailed through mot

I noticed after about a week the car was running a little rougher than normal
and seemed to lack power. It got progressivly worse as the car heated up and there was a popping noise when excess fuel was being burnt in the throttle body. The car was also miss firing badly after another month.

after more research i figured that maybe the spark plugs are shot?

I took the car to Steve bateman the italian car specialist in bristol who at first checked the front plugs, he said all seemed fine and that due to the time involved in looking at the rear we would assume that they are ok. He checked the ECU for fault codes this what came up

-Missfire detected in chamber 3
-bulb failure on the cabin injector warning light
-throttle potentiometer fault

He cleared the system and took it for a along drive

Missfire gone bulb failure still present but no biggy throttle problem still there

He cleaned the connectors and rechecked after drive fault gone.

Hurray I got some 0w 40 Fully synth castrol rs formula and a new oil filter put in

I have now had the car back for 2 weeks and the problem seems to be coming back, the excess fuel popping, poor power, flat spots etc all coming back. at low and high revs
seems to get worse each day.

ECU is no great help

I noticed when I was at lights the other day the engine was idiling rough and the lights seemed to dip/fade.

So I thought humm more research battery/altanator
Took it to local High Q for free battery/alt check and walah battery is only running at 65% aparantly thats poo, but the altanator is sound. So a battery is fitted leaving me 96 pound worse off. I watched the bloke do it and made sure he put some copper grease on the connections.

Drive away same problem
throttle reset same problem

I want to cry

So more research reveals potential problems:
MAF? (might not show a fault on ECU??)
Other sensor?
rear spark plugs?
Bad connection somewhere?
Poor connection in electronic throttle cable?

I think I am going to clean the MAF next as its the cheapest option but I really am stuck. This car is giving me a headache and I am running out of money to throw at it.

Please help me I want to keep the ALFA !!! I got a new MOMO Apache racing wheel to put in and I am holding back until I sort this problem out.

If any one has got any sound advice please let me know I am pulling my hair out.

Any way i think i deserve an award for longest first post ever.

I have been saving them up all year!!
jsbd1 is offline  
Sponsored Links
Status: - Update
Posts: n/a
Hello and welcome!
This is just a quick suggestion you may have tried already......disconnect the MAF. If there is any notable change in how the car runs then the MAF needs replacing. However, the symptoms you have described seem to be more than a MAF fault. Good luck with the fix, don't give in!
Status: -
AO Silver Member
PhilzAlfa's Avatar
Join Date: Apr 2009
Location: United Kingdom
County: Somerset
Posts: 3,126
I would recommend a trip to Simonstone on the Bath Road in Brislington, Bristol. I have been using them for nearly 8 years and find them very helpful. On faults like this, they generally agree to look over the car and diagnose the fault for a fixed price and then give you a price to fix it including parts. I find them very easy to deal with, honest and competent. I have no financial interest whatsoever in the business, I'm just a long standing customer. They used to be an Alfa main dealer (now Fiat) but have retained their service and parts capabilities. Definitely worth phoning them for a chat.
PhilzAlfa is offline  

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 147, 156 & GT

156 , badly , running

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome