Different MAS?

[2ndwind]

My auto shop called today and said the supplier sent the wrong MAS. Apparently, the intake size is different. Are there different size intakes for different years?

[So Cal Mark]

you have an AFM not a MAS. AFMs measure volume only, MASs measure density. BMW and ALFA used similar units with a larger diameter.

[2ndwind]

Thanks Mark,
One always starts out clueless on a new brand of vehicle.

[So Cal Mark]

the scary part is your mechanic not knowing what it is. They work completely differently. If he/she is trying to troubleshoot a problem it helps to know how the system works

[rlux4]

Mark's right. Did the mechanic say why the AFM needed replacement? Was the flap bent? Was there a problem with the potentiometer? Or is he just shooting in the dark?
Hopefully by now you know to come here first to see if someone can help you diagnose a problem before you take it to a mechanic (that may not know how the system works.)
We'll be glad to help when we can.
Ron

[So Cal Mark]

contrary to popular opinion, there are competent mechanics out there

[rlux4]

Of course that's true Mark. The problem is, the good ones are the ones that were around when these cars were still being sold here. By now these competent mechanics are total geezers. Shoot, even as old as me, almost.
Ron

[2ndwind]

Ok Guys,

I'm the incompetent one here. I have never tinkered with a fuel injected car. My mechanic did not call it a MAS, I did, because I didn't know any different. He had the part out and showed it to me. He swung the door inside it, back and forth for me to hear the incredible screech it put out. It was so loud, I thought something else was happening in the shop. He said the door was sticking wherever it wanted to. Sometimes, I'd get lucky and it would stick in the right spot other times, way off causing poor running. He is around 60 yrs old and has worked on Fiats, and other European makes for 40 yrs. It is his FT job and the only thing they do at that shop.

The last trip had an immaculate XKE, immaculate XK140, 90s Jag sedan, Pantera, and another XKE. They had just finished working on a beautiful Rolls Royce, sitting outside. There were numerous Alfa spiders, two Fiat spyders, A 1972 VW bug, A Fiat 1600? spyder and many more, all in great to immaculate condition. He had wrecked Alfa spiders in the fenced area, some other unrecognizable stuff and an interesting car I asked about. It was some kind of late-model Jensen coupe I'd never heard of or seen before. Not a Jensen Healey or Intercepter. The owner didn't have the $$ to restore it.

The most recent trip had another Beautiful Rolls Royce, an Alfa spider, an MG TC or TD, Fiat Spider 2000, and other stuff I don't remember. There is another shop not too far from me (both are located near a very wealthy area) that seems to do just British cars but I have never seen the beauties there that my shop seems to have regularly.

The point of all this is: The people who have the best European cars seem to take them to this shop. So I am inferring, it is the best in the area. Got the car back the day before Christmas. He told me he had just test driven it and it needs U joints and could stand an auxiliary air valve but it is not required and may do fine without it in the spring. Is that valve available for less than $100? I forgot to get pics, Sorry. Maybe tomorrow.

[2ndwind]

I forgot to mention Bob showed me where the auxiliary air valve is (and I recently downloaded Brad Artigue's guide) and told me how to replace it without cracking or breaking the little tube that goes over to the main airflow intake.

[rlux4]

The only way you can get a replacement AAR for under $100 is buying one used.
The best source for that is the forum(s). You really take your chances if you buy one off Ebay unless it's a seller you know. I've seen new ones go for as much a $300. However if you go up to $100, Mark (our moderator) has rebuilt units. The only ones I've heard of.
Ron

[So Cal Mark]

I do have rebuilt aar's in stock for $100 exchange, They have a one year warranty.
It sounds like you've chosen a VERY competent mechanic/shop.