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> 'Fumey running'- MAF sensor?
dante giacosa
post 13th May 2018 22:43
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1.6 8v
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Recently" I've noticed that my 1.8 CF2 is actually quite thirsty.

Or, 'more' thirsty that it should be.

The car doesn't smoke, use oil (at all, really), stall, or do anything bonkers. It pulls like a horse, for 144 bhp, but I rarely have it over 4000 revs. So, it's no big problem.

However, it has always, and now moreso, following a 1200 mile UK tour last week, smelt a bit rich from the exhaust.

During the last service, I had the Lambda swapped out, and have subsequently spent a lot of time thinking about what could affect the general tune of the engine.

Are the T-spark engines really 'tuneable', as in; there might be something that could be adjusted? Or, should I go for a new MAF next?

Currently on 108K.

Any advice, would be very interesting to me- thanks...


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JeremyG
post 14th May 2018 10:54
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When you say thirsty, what sort of mpg are you getting?
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dante giacosa
post 14th May 2018 11:01
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Hey Jeremy;

the BEST figure I have ever had out of it, is 'about' 40mpg.

and that was gentle 'low speed' motorway stuff for extended periods. (NOT hammering away at 80 /85)

Round the town; 15 litres is giving me about 60 or 70 miles.


But it's just smelling really rich, at the moment particularly. Do you think it's worth the MAF; or is there much 'adjustment' else where..?
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JeremyG
post 14th May 2018 11:29
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QUOTE(dante giacosa @ 14th May 2018 12:01) *
Hey Jeremy;

the BEST figure I have ever had out of it, is 'about' 40mpg.

and that was gentle 'low speed' motorway stuff for extended periods. (NOT hammering away at 80 /85)

Round the town; 15 litres is giving me about 60 or 70 miles.
But it's just smelling really rich, at the moment particularly. Do you think it's worth the MAF; or is there much 'adjustment' else where..?


So around town that's 21mpg at best...

I don't think the TS motors have ever been famed for their economy - and I've never measured mine. According to online stats, the Phase 2 2.0 should achieve 12.4l/100km urban or 6.6l/100km extra urban = 22.3 and 42.7mpg respectively... so you may not be too wide of the mark.

Regarding it smelling rich - assuming this is at tickover, the MAF could be worth a try as I believe it does most of its work at low revs to keep emissions down (do I have that right?)... fairly costly though, if you're not sure it's faulty. Have you tried running the car with the MAF disconnected for a while?

This post has been edited by JeremyG: 14th May 2018 11:30
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dante giacosa
post 14th May 2018 11:43
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no- I haven't tried that actually; the thought of that terrifies me!

the MAF is one of those things that have a 'life' though, isn't it..?


I'm quite keen to swap out all the 'consumable' engine management control items. Last year I had the Lambda replaced, and this year; I'm going to do the crank sensor shortly..

Does the car require any recalibration with a new MAF? It's not like the throttle position sensor is it?

I can just swap it out myself..? would it be this?;

https://www.ebay.co.uk/itm/ALFA-ROMEO-146-1...IQAAOSwtKJXHmEb

This post has been edited by dante giacosa: 14th May 2018 11:46
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JeremyG
post 14th May 2018 14:58
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Replacement is pretty simple - just a couple of jubilee clips. Oh, and the electrical connector. All advice I've seen is to replace with the correct Bosch part - unlike washer motors, this is definitely not an area to scrimp on... smile.gif

If you're in any doubt about the correct part no. there have been a few threads on this subject on this forum.

Or I can look it up on ePer if you wish...

Where is Layby 146, BTW? And was there a Layby 145 just before it???

This post has been edited by JeremyG: 14th May 2018 14:59
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dante giacosa
post 14th May 2018 15:25
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washer motors! funny wink.gif


Layby 145, 146, 147 & 156, are all on the A9

Scotland's longest road (& the U.K's fifth longest); 273 miles end to end; Falkirk to Scrabster.

It's always been my favourite road, more for 'the journey' to the Highlands, rather than it holding a series of demanding S-bends. However, recently I have come to be more familiar with the section North of Inverness, and it really is quite a drive. (indeed; a lot of people now realise that through the 'North Coast 500' thing)

http://www.northcoast500.com

Lay-by's count upwards from Perth, with the early 60's coming just before the Drumochter Pass.

146 is in the Cairngorms also, on the Southbound carriageway, just after the exit for A938 for Carrbridge.

And my 146.gif is now very familiar with the whole route!


thankyou Jeremy; if you had the time to look it up on ePer (at your convenience) I would greatly appreciate it. The trouble with this resource (often, but not always) is that much info is available specifically for the Cloverleaf, but 'less' is available for the lesser engines. It may of course be exactly the same part...?

This post has been edited by dante giacosa: 15th May 2018 08:07
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JeremyG
post 15th May 2018 21:48
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Nice! The North Coast 500 looks like a good thing...

According to ePer, the MAF part number for the Phase 2 cars is the same for 1.6, 1.8 and 2.0 engines:

Alfa part number = 46541253
Bosch part number = 0 280 218 019

Also discussed in this post:

http://forum.alfa145.com/index.php?showtop...=maf+bosch+part

The same part for a Phase 1 car looks much more expensive (~250!)

This post has been edited by JeremyG: 15th May 2018 22:05
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dante giacosa
post 15th May 2018 22:00
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THANKYOU Dr G

I really appreciate that...
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