n, 17 Jan 2000 21:43:46 -0500 


At Monday, January 17, 2000, 9:10:16 PM, Nathan
said something like:

> Oh wow...you should be connecting at close to 50K bps at least...40-48 was
> average for me when I had a 56K modem.  Check with your ISP info and make
> sure you are connecting to the correct phone number and check to make sure
> you machine is detecting the correct modem (I.E. go into the device manager
> if you are using Win9x and check to be sure the modem listed is the correct
> model).  Also check out your modem manuafacturer for any updated drivers or
> flashes for your modem...and check their FAQ section for known issues.  You
> should be doing alot better speed wise.  56K is the limit of analog lines
> IIRC because above that the signal will begin interfering with other
> airborne transmisions.  Also, you can go to
> http://computingcentral.msn.com/topics/bandwidth/speedtest50.asp and run the
> speed test to see how you're really dRe: new oil pressure sender weirdness




From:	"Keith Barton" <kbarton238@home.com>


Subject:Re: new oil pressure sender weirdness


Date:	Sat, 22 Jan 2000 15:26:32 -0500






----- Original Message -----
From: Kevin Lahey <kml@patheticgeek.net>
>
> This weekend, Keith Hearn and I installed the J. Whitney oil pressure
> senders into our '99s as outlined in:
http://www.miata.net/garage/opg2.html.
> I'm seeing some strange effects, and I wasn't quite sure why.
>
> I didn't tweak the resistors on the existing oil pressure guage yet,
> so the needle never really climbs that high.

I tried it with and without the resistor. The only difference was the
postion of the needle (1/3 full scale without resistor 2/3 with, for normal
oil pressure)

> When I start the
> car, it gets up to just short of the second mark (if the first mark
> is next to the 'L').  Even if I rev the engine, it doesn't go up
> any further, so I assume that this is the maximum reading available
> from the oil pressure sender.

That's about right for no resistor.

>
> Once I've been driving for awhile, it'll eventually lower, until finally
> at stoplights it'll bottom out totally, reading just what the car does
> with the ignition off.  No problem, I kind of expected that.

I don't think that's normal. Mine never moved far from the second mark,
without the resistor.  With the resistor, zero pressure is about at the 2nd
mark normal varies from a little above to a little below the 3rd mark.
Alessandro pulled his pointer off and re-positioned it "farther up" the
scale, instead of adding the resistor.  You could try that and see if it
still keeps dropping to "zero" pressure.

>
> What's been strange, though, is that over the last couple of days,
> I've occasionally seen the needle go *way* up, almost to the half-way
> mark (way past what I had assumed was the highest point it could reach),
> while I've been just driving along on the freeway at around 4500
> RPM.  At one point, I put in the clutch and watched the needle climb up
> higher, then slowly come down.  The needle just occasionally moves up
> and down itself, of its own accord.

I'd recheck the connections before I did anything.  It sounds like you could
just have a loose connection, or it could be a bad sender.


>
> In my more paranoid moments, I've decided that I screwed the installation
> somehow and got junk into the oil, so that the galleries are getting
> plugged and unplugged, increasing the pressure, and I'm watching the
> slow death of my engine.  In my less paranoid moments, I still wonder
> what the heck is going on.  Any ideas?
>
> About the only thing we did differently from the posted instructions
> was to use teflon tape instead of silicon sealent.  Keith also came up
> with a clever hack to avoid cutting off the connector from the wire
> that plugs into the oil pressure sender:  we hooked up a spade connector
> to a short piece of wire, so that it could plug into the existing
connector,
> and then lead into the new oil pressure sender.

I used teflon tape and the spade connector jumper too.  I had to 'pinch' the
female connector a


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