Date: Wed, 25 Jun 2008 15:47:49 -0700
Reply-To: The Westy man <zolo@FOXINTERNET.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: The Westy man <zolo@FOXINTERNET.NET>
Subject: Re: temp guage read-out
In-Reply-To: <91c8f9760806251325t47e812c8o3a569e1462f52cb8@mail.gmail.com>
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I have my van reading way too high. What to do to make it read under the
warning light? Or did I miss something when this thread was going?
Zoltan
----- Original Message -----
From: "pickle vanagon" <greenvanagon@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, June 25, 2008 1:25 PM
Subject: Re: temp guage read-out
Scott wrote:
>
> I have very rarely ever found a faulty temp sensor. In thousands of
> vanagons - neither the gauge temp sensor nor the one that talks to the
> ECU.
I recently installed an after market (non-german) gauge sender that had a
different temperature response curve and made my gauge read high. After I
replaced with a german one, everything was back to normal (which, for me,
usually means sitting on top of the right edge of the LED.)
So, it hadn't gone bad, but was bad to begin with.
Something to keep in mind...
-Wes
>
> Poor caontact is more likely than an acutal faulty sensor.
> that's one of those myths.
> and some techs just like to replace parts a lot, in case there is any
> doubt.
> and granted..........you can have one that is 'iffy' and not clearly
> bad or good- and the new ones are inexpensive - so that can be valid.
>
> I missed it was an 87 GL.
> Darn ! my bad - I missed it after your name. I look for it in the
> subject line first.
>
> well yes, of course.........that was my thought too - if someone has an
> engine coversion in their vanagon, of Course, I hope, they would say
> it's a subaru or whatever.
> but this is a *vanagon* list - there are FOUR distinctly differnt
> engiens in vanaongs- the air-cooled , the diesel, the 1,9 wbxr, and the
> 2.1 wbxr.
>
> A lot of time i can figure out which engine they are talking about
> .......and in your case I guessed ( having missed the 87 GL note ) that
> it's a water boxer.
> I am still wondering,
> since it's a 2.1 ........if you replaced the gauge temp sensor and not
> the ECU temp sensor.
> they are very similar looking, both have two wires, both are in the
> plastic thermostat housing etc.
>
> what about my comment about Voltage Stabilzer in the dash ?
> best,,
> scott
>
> Richards, Andrew wrote:
>
>>
>> Cut me some slack, Scott. I'm not a pro mechanic like you apparently
>> are. I joined this list to learn more about my van and keep it
>> running right, not to be yelled at.
>>
>>
>>
>> My mechanic used an IR gun on my radiator and determined it was
>> blocked three or four years ago. My water pump was leaking, so it
>> needed replacing. I did the temp sensor because I found on
>> www.benplace.com some info about it being a commonly faulty part and
>> it's a CHEAP part to replace.
>>
>>
>>
>> And sorry, I guess I assumed that since I said I had an '87 GL that
>> people would assume a 2.1L. Most seem to note if they have a
>> conversion of some sort.
>>
>>
>>
>> Andrew
>>
>>
>>
>> ------------------------------------------------------------------------
>>
>> *From:* Scott Daniel - Shazam [mailto:scottdaniel@turbovans.com]
>> *Sent:* Tuesday, June 24, 2008 1:08 PM
>> *To:* Richards, Andrew
>> *Cc:* vanagon@GERRY.VANAGON.COM
>> *Subject:* Re: temp guage read-out
>>
>>
>>
>> hi,
>> you're SURE you have a good new german thermostate in there ??
>> 87 C is the 'hot' I believe.
>> also...........
>> YOU MUST, MUST MUST have a simple IR temp gun.
>> then......you just point it at various spots and hoses on the engine
>> and then you know what the real running temp of the engine is.
>> without some good independent temp determining system like that.........
>> right now you don't really know if it's the engine is actually running
>> too cool,
>> or if the guage is reading incorrectly.
>> and ..........'just trying parts' is not a very evolved way to go
>> about fixing this symptom.
>>
>> Other reasons I emphaicize the need for an Infra Red temp gun is it's
>> infinitel uses- I can identify an not-as-well fring spark plug in two
>> seconds with on.
>> Endless uses.
>> check if a brake is dragging - on and on like that.
>>
>> you could also measure the resistance of your temp sender.
>> you don't say which engine .......1.9 or 2.1...........or even
>> diesel...........
>> but on the 2.1 I wonder if people are not getting the two temp sensors
>> mixed up or confused.
>> one is for guage, one for ECU.
>> ( here's a fun one - on an OBD-II Subaru - you connect your laptop or
>> code reader to the OBD-II port...........and you get to see EXACTLY
>> what temp the ECU is seeing inside the engine !~ )
>>
>> btw................i have almost NEVER seen any temp guage problems on
>> a vanagon unless they were assoiciated with the VOLTAGE STABIZER on
>> the back of the printed cirucit on the dash.
>> you considered that, right ?
>>
>> scott
>> www.turbovans.com <http://www.turbovans.com>
>>
>> and not haivng a simple infra red temp gun when you work on and
>> diagnose your own cars or van is like not having a ...............
>> like not having two hands, it's that useful.
>> they start at about 40 bucks. I wouldn't be without one. Litterly
>> thousands of uses.
>>
>> And every day I pray that vanagon owners who work on their vans will
>> learn to adapt a diagnostic and testing mind,
>> and not a 'what part is it' mind. SO OFTEN it's not a faulty part, or
>> at least not the one you guessed/hoped it was.
>> I guess i will just have to start writing diagnostic tech tactics and
>> tricks Iit's so much more fun than just trying parts. Plus you learn
>> how the systems work, and you just get better and better at diagnosing
>> and fixing. You never learn that much just replacing parts until you
>> hit the right one or two.
>>
>> Richards, Andrew wrote:
>>
>> List,
>>
>>
>>
>> In the last 25K miles, I've replaced my radiator, water pump, thermostat,
>> and just last night, my temp sensor that sends the signal to the dash. I
>> did the sensor in hopes of getting my dash gauge to sit in the middle
>> over
>> the flashing bulb, but it's still at ¾ when at running temp. Is there
>> any
>> way to get the needle to the middle?? It just seems so illogical.
>>
>>
>>
>> Also, I was told by a couple list members that the system is
>> self-bleeding
>> and I wouldn't have to bleed it after changing my temp sensor. Well, I'm
>> not seeing any change in the coolant levels of my expansion tank(s) after
>> losing at least a few cups in the process of swapping sensors. What's up
>> with that? Just to be sure, I'm going to go for a drive tonight with the
>> heat all the way on and see what happens.
>>
>>
>>
>> Thanks,
>>
>>
>>
>> Andrew
>>
>> '87 GL
>>
>>
>>
>>
>>
>>
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>>
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>> 7:53 AM
>>
>>
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