MkI coolant temp guage with 2 prong ABA sensor

[jdbubb at verizon.net (Dan Bubb)]

OK, it took a little digging, but I found it.
We used a 35 ohm resistor on Kirsten's car.
No guarantee that'll be right for you car, but maybe......

So, you going to send me a datalog and msq file so I can play with your AFR before you hit the track again??
Dan

 From: "C Boyko" <roccit_53@xxxxxxxxxxxxxxxxxxxxxxx>
To: " Dan Bubb " <jdbubb@xxxxxxxxxxx>
Cc: <scirocco-l@xxxxxxxxxxxx>
Sent: Tuesday, June 19, 2007 6:08 PM
Subject: Re: MkI coolant temp guage with 2 prong ABA sensor


> THAT is more like what I was thinking of, of course, being lazy, I was
> hoping that someone had done this and knew which resistor. I guess I'll
> just have to pull out that pack I have and see what happens eh? BTW, so
> far, I'm enjoying that cam! Should have some hard numbers to go with the
> "impression that its faster" on the weekend.
> Cathy
>
> On 8:25 am 06/19/07 "Dan Bubb" <jdbubb@xxxxxxxxxxx> wrote:
>> The temp sensor are just variable resistors. So, there is no reason
>> the ABA sensor won't work with your existing gauge. The issue here is
>> probably that sensors just have different resistance curves. On
>> Kirsten's 1.8T swap we simply added resistance in series with the
>> sensor until the gauge read in the middle of the range when the engine
>> was at normal operating temp.
>>
>>  From: "C Boyko" <roccit_53@xxxxxxxxxxxxxxxxxxxxxxx>
>> To: <scirocco-l@xxxxxxxxxxxx>
>> Sent: Sunday, June 17, 2007 5:02 PM
>> Subject: MkI coolant temp guage with 2 prong ABA sensor
>>
>>
>> >  Yeah, so at some point my laptop won't be riding shotgun 24/7, so
>> >  I'll lose
>> >  my coolant gauge on Megatune. This is in my '79, ABA head, with
>> >  MSnS. Anyway, the stock ABA coolant temp sensor is in the coolant
>> >  manifold, and just isn't working to send info to the stock cluster
>> >  guage properly. The stock sender was a one wire, and hooking up
>> >  the ABA sender with one wire to
>> >  the gauge and the other to ground just pegs the gauge. How do I
>> >  know what the expected output is from the stock sender, and how do
>> >  I adjust what's coming from this ABA one? I don't think that the
>> >  stock one could be easily adapted, as it probably grounds in the
>> >  manifold, and the ABA one is plastic, not metal. I don't have an
>> >  ABA Bentley to see how it's normally wired up. Thanks!
>> >  Cathy
>> >