on 6/21/07 11:13 AM, DON SCOTT at rowdon@sonoma-county.org wrote:
> What does one of those thermometers cost? Wish I had one years ago when
> I was more involved with overheating Britcars! My Miata and Civic Si
> temp gauge just go to N and stay there regardless of the ambient temp or
> the grade of the road or movement of the car. Maybe the gauges on
> Japanese cars are inaccurate and are designed to make the driver think
> everything's ok?
Not so much "inaccurate" as "severely damped" -- they are not analog
real-time gauges, but are under control of the ECU.
For example, my wife's Geo Metro has a temp gauge that scarcely ever moves
off "cold" (this seems unlikely for an inline 3 with a heritage of
overheating problems and a plastic radiator the size of a sheet of
letterhead). Dealer diagnostics traced it to the computer, which also tends
to display the "check engine" warning at random. Their response was "Live
with it -- it's not worth replacing the ECU".
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
>
>>>> "Dodd, Kelvin" <doddk@mossmotors.com> 6/21/2007 11:02:23 AM >>>
> Matt:
>
> First. Go out and buy an infrared thermometer as suggested. They are
> really cool fun toys and will let you know what is really happening.
>
> Second. Quit worrying.
> If your temperature gauge starts heading north and keeps steadily
> going.
> Then and only then do you have a problem. A stable temperature of 215
> degrees is not a problem in stop and go traffic.
>
> Variations up to just shy of the H mark are fine when sitting, as long
> as they stay there and go back down as soon as you start moving. The
> gauge, sending unit and voltage stabilizer can all vary over time.
> Also
> a 4 degree change in timing can cause a change from below N to above
> N.
>
>
>
>
> Kelvin Dodd
>
>> -----Original Message-----
>> From: mgs-bounces@autox.team.net [mailto:mgs-bounces@autox.team.net]
>
> On
>> Behalf Of Matthew Milkevitch
>> Sent: Wednesday, June 20, 2007 6:48 PM
>> To: mgs@autox.team.net
>> Subject: [Mgs] Cooling issue
>>
>> Fellow Listers;
>>
>> I have a cooling issue with my '74 MGB-GT, and I was wondering if
> anyone
>> had any input as to the cause.
>>
>> The basic problem is this: The past couple of days have been
> fairly
> hot
>> here in Philadelphia. Running my BGT with a 165 deg F thermostat,
> the
> car
>> seems to run a little hot (in my opinion). The needle on the temp
> gauge
>> is a little above the "N." When I sit in traffic, the temp goes up
> some
>> more, maybe 1/2 way between "N" and "H." It comes down a little
> when
> I
>> get going.
>>
>> Recently, I drained the radiator, had it cleaned out and
> checked....and
>> I re-installed it with fresh hoses (one was leaking some) and a new
>> thermostat.
>>
>> Today, it was in the low 80's in Phila...very dry and nice. I ran
> the
>> car and it pretty much did the same thing!
>>
>> Any insights? I have yet to check the water pump. The temp
> sender
>> could also be suspect.
>>
>>
>> Thanks for all your help,
>> Matt Milkevitch
>> '74 MGB-GT
>> Willow Grove, PAfo/mgs
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