GTV 3.0 Running Cold and Rich - Alfa Romeo Forum
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(Post Link) post #1 of 27 Old 28-03-19 Thread Starter
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Smile GTV 3.0 Running Cold and Rich

Hey New too the Alfa world here

Just purchased a 2000 GTV 3.0 V6 24v

I have a few little issues with the car

1st Car seems to be running Cold i was given a spare thermostat that i put on at the weekend but still seems to takes ages to get over 50c should i just get a new one?

My second problem is the car seem to be running really Rich, would there be anything i should look out for on this?

3rd i occasionally get a flat-spot about 3-5K car doesnt seem to want to go i have read in posts the MAF sensor is at fault which i did take off last night and give a good clean but guessing this is something that just need to be replaced once symptoms start? or could this be 02 sensors on exhaust?( possibly connected to problem 2?)

Help would be much appreciated
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Hi There

These cars of this era do take a little longer to warm up. Mine takes around 15 min to get warm fully, A modern car less so, I would live with the car read the posts and gain information before going out spending money on various bits, The MAF is expensive but the thermostat less so neither could be the cause of your issue, Take a month of use and do 500 miles then review the situation
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Leave the MAF disconnected, drive the car. Does it lose the flat spot? Does it stop running rich?

It might be worth trying some Forte Gas Treatment to help clean things up, I use it once a year......usually a fill or two before the MOT.
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As above, try the MAF disconnected, if it improves then it's 99% likely to be the problem. MAFS are very weak on these, and basically once they're gone they're gone. Also, it will deteriorate long before the injector light comes on as a sign of total failure. To be honest the flat spot and running rich are certainly symptoms of dud MAF. Welcome to 916 ownership!
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(Post Link) post #5 of 27 Old 28-03-19 Thread Starter
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Hey Guys

Thankyou all for the advise guys

I just pop the MAF Lead off while as work and ran it home and yeah this makes so much difference so looks like a new MAF will be getting ordered soonish

any thought on thermostat was running at about 70c on way home is this normal? or should it be at around 90c?

Thanks again
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Mine runs at about 70 degrees on a cruise, even with a brand new genuine thermostat. The radiator is recent also. It climbs to 90 in traffic and the fans cut in. I think this is normal with the V6.


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I have exactly the same on my Twinspark, and two previous V6s. I think its a combination of a well cooled engine and somewhat vague reading gauge that exaggerates things. Others on here have it run at 90 more consistently, but I never have, even with new genuine thermostats.
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Smile

Thanks guys thats put my mind more at ease

so Definite MAF / Cambelt needs sorting(Yes expensive...) lol

Just needs exhaust sorting as Mani is blowing

Anyone recommend a nice sounding exhaust? cat back or just back box?
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Depends on what time of sound and volume you want. Wizard is an incredible sound, very Ferrari-esque, but loud! I've had full Alfaholics exhaust from downpipes back and that was a raspy but more cultured sound, and slightly less antisocial lol, beautifully made (as is Wizard) but is very expensive. YouTube some vids for an idea. For full effect these are both effectively cat-back.
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I would recommend getting the ECU read. My car had a damaged lambda sensor making it run rich. The ecu had an error code but it did not turn on the ECU light. Even the multiecuscan software said 'this error does not illuminate a warning light.'
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(Post Link) post #11 of 27 Old 29-03-19 Thread Starter
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Wizard does sounds good lol maybe looking that way i have a meeting with powerflow next week so will see what they can sort out

Ill pop over to my local garage then see if they can put there ecu reader in see if there are any fault codes worth checking out

Thanks again everyone for your suggestions
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Originally Posted by Thomas Thacker View Post
Wizard does sounds good lol maybe looking that way i have a meeting with powerflow next week so will see what they can sort out



Ill pop over to my local garage then see if they can put there ecu reader in see if there are any fault codes worth checking out



Thanks again everyone for your suggestions
If you've got a laptop you can read it yourself with a simple cable from ebay.....and a scanning program which I could give you a link to.
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If you've got a laptop you can read it yourself with a simple cable from ebay.....and a scanning program which I could give you a link to.
Really? that would be fantastic if you could

is it just a OBD2 to Usb Cable that i would need to get?

Much appreciated
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Really? that would be fantastic if you could



is it just a OBD2 to Usb Cable that i would need to get?



Much appreciated
It is with a four dip switches, I'll try and find a link on ebay when I get the chance.
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Anybody bought one recently and got a link?
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Quote:
Originally Posted by cgc View Post
It is with a four dip switches, I'll try and find a link on ebay when I get the chance.
whenever your free that would be greatly appreciated i cant seem to find any like what you have described
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https://rover.ebay.com/rover/0/0/0?m...2F253091652910

I have something similar to this. The blue adapter works on the 916. The other leads work on more modern fiats and alfas. You need a copy of multi ecu scan, which can be used for free but needs a licence to use all the modules. Seems like a hefty outlay, but most indy garages charge £30-40 to plug the car in each time, so it pays for itself after a few warning lights...


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Here is the one I got some years ago.

https://rover.ebay.com/rover/0/0/0?m...2F253091653536
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I'll post links to a registered copy of fiatecuscan and licensed multiscan when I get back home to my laptop.
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(Post Link) post #21 of 27 Old 29-03-19 Thread Starter
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Talking

That's fantastic thanks for the links ill look to get a lead this weekend and check my Alfa out

feeling the Alfa Love

Cheers everyone
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(Post Link) post #22 of 27 Old 31-03-19 Thread Starter
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So gave the car a good clean and wax and shes looking a pretty look her for a 50mile run to pick my partners new car up following her back on the new NDR near Norwich and BANG

Car then seems to have much more power so i get home and go to the exit of the exhaust and nothings coming out i look under the car and the CATs glowing Red i then turn to the back box and the whole backbox has exploded baffles all hanging out haha

Time for a new exhaust i recon...
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Quote:
Originally Posted by Thomas Thacker View Post
So gave the car a good clean and wax and shes looking a pretty look her for a 50mile run to pick my partners new car up following her back on the new NDR near Norwich and BANG



Car then seems to have much more power so i get home and go to the exit of the exhaust and nothings coming out i look under the car and the CATs glowing Red i then turn to the back box and the whole backbox has exploded baffles all hanging out haha



Time for a new exhaust i recon...
Alfaholics and Ragazzon do good ones.
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Thermostat

If the engine is not warming up to operating temperature then it WILL run rich. I had the same problem and fitted a NEW thermostat with correct temperature and no rich mixture. Cheers.
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(Post Link) post #25 of 27 Old 23-05-19 Thread Starter
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All sorted now one of the spark plugs wasnt seated properly in the cylinder, 6 new spark plugs and shes running beautifully though just noticed my Oil filler cap has a crack in and is leaking anyone know where to get a cheap one?
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