Thanks Mark and Steve,

I will try your suggestion. I did try the archives first, put I guess I
didn't make the correct query.

Phil
'89 Westy

>From: mark drillock <drillock@EARTHLINK.NET>
>Reply-To: mark drillock <drillock@EARTHLINK.NET>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Re: coolant sensor 50/50 tolerance?
>Date: Mon, 19 Jul 2004 19:35:03 -0700
>
>Yep, another Vanagon list myth, IMHO. The mixture percentage should make
>little if any difference. The false blinking light can be due to several
>real causes. Very frequently the circuit that makes the led blink when
>the key is turned on fails and makes the led blink when it shouldn't. In
>an 89 it is a simple matter to eliminate the possibility that false
>blinking is due a problem with the coolant level sensor, coolant level,
>even coolant mixture.
>
>Simply pull the relay from relay socket #3 and see what happens to the
>blinking led. This relay should have a large 43 stamped on the end. If
>the blinking problem continues to occur with this relay out, it has
>NOTHING to do with the coolant level sensor, coolant level, or coolant
>mixture. If the problem goes away with the 43 relay removed then it MUST
>have something to do with the coolant level sensing system and further
>efforts are needed such as what Steve suggests.
>
>Now I have repeated for what seems like the umpteenth time, the same
>info regarding a blinking temp gauge led and the simple way to start
>isolating the cause.
>
>Mark
>
>Steve Delanty wrote:
>
>>Phil,
>>The first thing to do is to remove the coolant level sender
>>and clean the probes with some steel wool or fine sandpaper
>>to remove any corrosion. The water/coolant ratio shouldn't
>>really matter that much I ran plain water with no anti-freeze
>>in mine for a couple days and the coolant light worked fine.
>>Clean probes are happy probes....
>>
>>Steve
>>
>>-------------------------------------
>>At 04:14 PM 7/19/2004, Phil Menchions wrote:
>>
>>>Hi volks,
>>>
>>>I have seen recent suggestions that a deviance from the 50:50
>>>coolant:water
>>>concentration is responsible for an intermittent blinking light.
>>>
>>>My '89 is displaying the same symptoms and I'm sure it's not temp
>>>related.
>>>
>>>I believe the mix may be a little rich on the coolant side, however, how
>>>does one actually determine this and how much of a tolerance one way
>>>or the
>>>other makes the sensor blink?
>>>
>>>Is there a tool to test for the mix ratio? The turkey baster (for
>>>lack of a
>>>better term) gadget gives a temperature tolerance. I suppose one could
>>>extrapolate from this reading but would it be very accurate?
>>>
>>>Phil
>>>'89 Westy
>>

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