Re: Milano/75 questions

["Joseph E. Moryl" <joe@domain.elided>]

Howard,

I don't think there is anything contradictory in my request. Of the 4 cars
that I have owned with oil level sensors I either experienced failure or
false readings. The only reason I would consider buying a new one is to
put out the ARC light. I'm quoted about $100 from the local Alfa places ,
and considering the PIA aspect, I'll pass. 

However, it happens that the ARC is not a particularly fancy piece of
technology. The two wires going to the ARC simply need to see a resistance
of ca. 12 ohms to be happy. See this link from Collin Verelli:
www.geocities.com/motorcity/2380/75oils.htm

Yeah, on the speedo I still can't figure it: there is no jerking or other
stuff going on when I decelerate. I'm starting to think it might be some
physical imperfection in the gauge movement itself, considering it only
happens at one speed. If it dosen't get worse I can live with it.

Thanks for your response,

Joe Moryl


On Sat, 18 Dec 1999, Howard and Pat Warren wrote:
 
> 
> Joe asked a couple of Milano questions:
> 
> <<<<<
> First, the oil level sensor has died and constantly indicates low oil on 
> the ARC. As I don't trust these devices anyway I'm not too keen on buying a 
> new sensor. Does anyone know how to trick the ARC into ignoring this sensor 
> - shorting it or leaving the connector off is  not the answer.
> >>>>>
> 
> You've posted a question with contradictory answers.  First, the assumption 
> the oil level sensor is untrustworthy really is false.  The sensor is not 
> particularly expensive, around $30~50, but installing it is a PITA.  Still, 
> I only replaced the level sensor on my Milano once in 165k miles.
> 
> Second, you ask how to "trick" the ARC into ignoring the sensor, but 
 > without shorting the sensor.  Unless you're prepared to reprogram and 
> reburn the logic chips of the ARC, this is not possible (to my knowledge.) 
>  The oil level logic expects voltage continuity from the sensor.  To fake 
> out the continuity, the wire must be grounded (iow, shorted.)
> 
> Personally, I would replace the sensor.
> 
> <<<<<
> Second, when driving in excess of 70 mph and then decerlerating to a speed 
> less than 70 I get a momentary oscillation in the speedometer needle 
> (magnitude +/-10 mph) as the needle passes the 70 mark. Otherwise the 
> speedo is fine.
> >>>>>
> 
> I would suspect a signal problem.  The speedo sensor is in the transaxle. 
>  Decelerating through 70 MPH, do you feel any vibration or shimmy?  If so, 
> the signal wire could be loose.  Otherwise, I would just watch it and wait 
> for it to get worse.
> 
> Howard K. Warren, Little Rock, AR
> 1984 GTV-6, "Falconi", 133k miles
> 1991 164L, "Peregrine", 65k miles
> 
> 

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