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Is yours a '93 or '95? The symptoms are indicative of the same circuit
board problem and the solution is the same
_ ()

Bob W.

Folks,

I'm started a new thread with similar but different issues than
CampbellMeister's.

Today I took my EV out for a 40-mile errand. No problems at all on
the way out - free-flowing highway all the way. I was out of the van
for about 2 hours. When I got back in to come home, I turned on the
ignition and the temp warning light immediately blinked and continued
blinking. Temp gauge was low - not hot at all. I drove for about 5
miles and pulled into a "service" station and read the owner's manual,
which says it's either a coolant level issue, a blown rad fan fuse, or
a v-belt off a water pump(!). Well, this "service" station had no
water, but I verified the coolant was high enough. The fuse was not
blown. I started it up and the light went off, so I drove it down the
highway. After about 10 minutes it started blinking again. I pulled
off again and turned off the motor. After about 5 minutes, I started
up and the blinking light was off, and didn't come on again and I made
it home with no issues. It should be noted that at no time did the
temp gauge go up beyond a normal level.

I'm about to embark on a 600 mile round trip this weekend (hopefully).


Any thoughts on what I'm seeing here?

Thanks,


Kenny C.
NYC

--- Kenny Cummings <nycnorton@...> wrote:

Today I took my EV out for a 40-mile errand. No problems at all on
the way out - free-flowing highway all the way. I was out of the van
for about 2 hours. When I got back in to come home, I turned on the
ignition and the temp warning light immediately blinked and continued
blinking. Temp gauge was low - not hot at all. I drove for about 5
miles and pulled into a "service" station and read the owner's manual,
which says it's either a coolant level issue, a blown rad fan fuse, or
a v-belt off a water pump(!).

The manual is mixing causes and symptoms there in one paragraph.

The light is an indicator of either low coolant level or excessive temperatures, period. However
some of those things listed in the manual aren't actually sensed as a problem but are potential
causes of the problem that is sensed (if that makes...er...sense).

Anyway, when *cold*, make sure your coolant level is at the MAX mark.

If that doesn't fix it, you might be overheating for one or more reasons (v-belt off of pump,
stuck thermostat, etc.). But if you're not overheating, then the sensor itself is probably
flaking out on you.

Well, this "service" station had no water, but I verified the coolant was high enough. The fuse

was not blown. I started it up and the light went off, so I drove it down the highway. After
about 10 minutes it started blinking again. I pulled off again and turned off the motor. After
about 5 minutes, I started up and the blinking light was off, and didn't come on again and I made
it home with no issues. It should be noted that at no time did the temp gauge go up beyond a
normal level.

An overheated engine isn't likely to cool down enough in just 5 minutes and not re-trigger the
light and so therefore I'm now suspecting that the sensor is flaky. Check the connector on the
sensor on top of the coolant reservoir and make sure that's fine (make sure the wiring connector
is tight). The engine temperature sensor though I'm not sure exactly where that is (I had a VR6,
not an I-5).

I also suspect the sensor based on your description. I've never had a
problem with mine, but IIRC others have reported cleaning the sensor
-- I don't know if that is just cleaning the connector or if there is
something to clean on the end of the sensor.

--
Sent from Gmail for mobile | mobile.google.com

Thanks folks.

My reservoir for coolant was translucent at one time but seems to have
clouded after all these years. I put water into the reservoir and the
fluid level came all the way up to the cap, but I couldn't see any
visible fluid level near the min/max line. I assume this means it's
full (probably too full), but doubt this is my problem.

If I were overheating, or had a faulty circuit board, wouldn't my temp
gauge be fluctuating? It was not - it was reading as it should -
right in the middle between cool and hot.

-KC
NYC




--- In ev_update@..., "Stephen Kramar" <sgkramar@...> wrote:

I also suspect the sensor based on your description. I've never had a
problem with mine, but IIRC others have reported cleaning the sensor
-- I don't know if that is just cleaning the connector or if there is
something to clean on the end of the sensor.



On 6/4/08, gti_matt <gti_matt@...> wrote:

--- Kenny Cummings <nycnorton@...> wrote:

Today I took my EV out for a 40-mile errand. No problems at all on
the way out - free-flowing highway all the way. I was out of the van
for about 2 hours. When I got back in to come home, I turned on the
ignition and the temp warning light immediately blinked and continued
blinking. Temp gauge was low - not hot at all. I drove for about 5
miles and pulled into a "service" station and read the owner's

manual,

which says it's either a coolant level issue, a blown rad fan

fuse, or

a v-belt off a water pump(!).

The manual is mixing causes and symptoms there in one paragraph.

The light is an indicator of either low coolant level or excessive
temperatures, period. However
some of those things listed in the manual aren't actually sensed as a
problem but are potential
causes of the problem that is sensed (if that makes...er...sense).

Anyway, when *cold*, make sure your coolant level is at the MAX mark.

If that doesn't fix it, you might be overheating for one or more

reasons

(v-belt off of pump,
stuck thermostat, etc.). But if you're not overheating, then the

sensor

itself is probably
flaking out on you.

Well, this "service" station had no water, but I verified the

coolant was

high enough. The fuse

was not blown. I started it up and the light went off, so I drove

it down

the highway. After
about 10 minutes it started blinking again. I pulled off again

and turned

off the motor. After
about 5 minutes, I started up and the blinking light was off, and

didn't

come on again and I made
it home with no issues. It should be noted that at no time did the

temp

gauge go up beyond a
normal level.

An overheated engine isn't likely to cool down enough in just 5

minutes and

not re-trigger the
light and so therefore I'm now suspecting that the sensor is

flaky. Check

the connector on the
sensor on top of the coolant reservoir and make sure that's fine

(make sure

the wiring connector
is tight). The engine temperature sensor though I'm not sure

exactly where

that is (I had a VR6,
not an I-5).

--
Sent from Gmail for mobile | mobile.google.com

Yes, in my experience the circuit board problem on the 93 provided
dead or fluctuating gauges. On mine the temp and gas were both
effected equally.

AFAIK, the flashing LED is independent of the gauge.

--
Sent from Gmail for mobile | mobile.google.com

And I guess my next question(s) is, how can I determine if the v-belt
is actually spinning the water pump? Is it visible through the hood?

Should I be concerned the motor is not being properly cooled, or
because the temp gauge shows normal temps I can feel with confidence
this is a sensor problem?




--- In ev_update@..., "Kenny Cummings" <nycnorton@...> wrote:

Thanks folks.

My reservoir for coolant was translucent at one time but seems to have
clouded after all these years. I put water into the reservoir and the
fluid level came all the way up to the cap, but I couldn't see any
visible fluid level near the min/max line. I assume this means it's
full (probably too full), but doubt this is my problem.

If I were overheating, or had a faulty circuit board, wouldn't my temp
gauge be fluctuating? It was not - it was reading as it should -
right in the middle between cool and hot.

-KC
NYC




--- In ev_update@..., "Stephen Kramar" <sgkramar@> wrote:

I also suspect the sensor based on your description. I've never had a
problem with mine, but IIRC others have reported cleaning the sensor
-- I don't know if that is just cleaning the connector or if there is
something to clean on the end of the sensor.



On 6/4/08, gti_matt <gti_matt@> wrote:

--- Kenny Cummings <nycnorton@> wrote:

Today I took my EV out for a 40-mile errand. No problems at all on
the way out - free-flowing highway all the way. I was out of

the van

for about 2 hours. When I got back in to come home, I turned

on the

ignition and the temp warning light immediately blinked and

continued

blinking. Temp gauge was low - not hot at all. I drove for

about 5

miles and pulled into a "service" station and read the owner's

manual,

which says it's either a coolant level issue, a blown rad fan

fuse, or

a v-belt off a water pump(!).

The manual is mixing causes and symptoms there in one paragraph.

The light is an indicator of either low coolant level or excessive
temperatures, period. However
some of those things listed in the manual aren't actually sensed

as a

problem but are potential
causes of the problem that is sensed (if that makes...er...sense).

Anyway, when *cold*, make sure your coolant level is at the MAX

mark.

If that doesn't fix it, you might be overheating for one or more

reasons

(v-belt off of pump,
stuck thermostat, etc.). But if you're not overheating, then the

sensor

itself is probably
flaking out on you.

Well, this "service" station had no water, but I verified the

coolant was

high enough. The fuse

was not blown. I started it up and the light went off, so I drove

it down

the highway. After
about 10 minutes it started blinking again. I pulled off again

and turned

off the motor. After
about 5 minutes, I started up and the blinking light was off, and

didn't

come on again and I made
it home with no issues. It should be noted that at no time did the

temp

gauge go up beyond a
normal level.

An overheated engine isn't likely to cool down enough in just 5

minutes and

not re-trigger the
light and so therefore I'm now suspecting that the sensor is

flaky. Check

the connector on the
sensor on top of the coolant reservoir and make sure that's fine

(make sure

the wiring connector
is tight). The engine temperature sensor though I'm not sure

exactly where

that is (I had a VR6,
not an I-5).

--
Sent from Gmail for mobile | mobile.google.com

---We had the same issue last summer.
Here are a couple of things to check;
-the o-ring or seal on your reservoir cap can get old, brittle and
not seal things properly. Replacement ones can easily be found at an
VW place, or via Europarts (Steve) or gowesty. A cheap and easy fix.

Also the Temp sending unit (which just gives you the temp reading for
your gauges, doesn't control your fans, (those are high and low speed
fan relays, so fortunately if one fails (which they often do) the
other would most likely be still working). We replaced ours sending
unit and the van did seem to run at mid temp vs cool as indicated on
the gauge below. Driving up the Coquihalla hwy in BC in the wee
hourse one morning, the temp light started blinking. The temp gauge
didn't indicate any issues, though there was a slight smell of
coolant when the hood was lifted. We suspected the Reservoir cap,
kept an eye on things and continued home. A week later, I was
driving it over to the Mechanics (for another issue) and 2 blocks
from the shop, blew a rad hose. It has a slight pin hole in it from
rubbing on an adjactent fitting and decided to blow.

Just keep that in mind if you find that light still blinking after
changing the reservoir cap, and the temp sending unit.

good luck with it!

cheers,
Nicki


In ev_update@..., "Kenny Cummings" <nycnorton@...> wrote:

And I guess my next question(s) is, how can I determine if the v-

belt

is actually spinning the water pump? Is it visible through the

hood?

Should I be concerned the motor is not being properly cooled, or
because the temp gauge shows normal temps I can feel with confidence
this is a sensor problem?




--- In ev_update@..., "Kenny Cummings" <nycnorton@>

wrote:

Thanks folks.

My reservoir for coolant was translucent at one time but seems to

have

clouded after all these years. I put water into the reservoir

and the

fluid level came all the way up to the cap, but I couldn't see any
visible fluid level near the min/max line. I assume this means

it's

full (probably too full), but doubt this is my problem.

If I were overheating, or had a faulty circuit board, wouldn't my

temp

gauge be fluctuating? It was not - it was reading as it should -
right in the middle between cool and hot.

-KC
NYC




--- In ev_update@..., "Stephen Kramar" <sgkramar@>

wrote:

I also suspect the sensor based on your description. I've never

had a

problem with mine, but IIRC others have reported cleaning the

sensor

-- I don't know if that is just cleaning the connector or if

there is

something to clean on the end of the sensor.



On 6/4/08, gti_matt <gti_matt@> wrote:

--- Kenny Cummings <nycnorton@> wrote:

Today I took my EV out for a 40-mile errand. No problems at

all on

the way out - free-flowing highway all the way. I was out of

the van

for about 2 hours. When I got back in to come home, I turned

on the

ignition and the temp warning light immediately blinked and

continued

blinking. Temp gauge was low - not hot at all. I drove for

about 5

miles and pulled into a "service" station and read the

owner's

manual,

which says it's either a coolant level issue, a blown rad fan

fuse, or

a v-belt off a water pump(!).

The manual is mixing causes and symptoms there in one

paragraph.

The light is an indicator of either low coolant level or

excessive

temperatures, period. However
some of those things listed in the manual aren't actually

sensed

as a

problem but are potential
causes of the problem that is sensed (if that

makes...er...sense).

Anyway, when *cold*, make sure your coolant level is at the

MAX

mark.

If that doesn't fix it, you might be overheating for one or

more

reasons

(v-belt off of pump,
stuck thermostat, etc.). But if you're not overheating, then

the

sensor

itself is probably
flaking out on you.

Well, this "service" station had no water, but I verified the

coolant was

high enough. The fuse

was not blown. I started it up and the light went off, so I

drove

it down

the highway. After
about 10 minutes it started blinking again. I pulled off

again

and turned

off the motor. After
about 5 minutes, I started up and the blinking light was off,

and

didn't

come on again and I made
it home with no issues. It should be noted that at no time

did the

temp

gauge go up beyond a
normal level.

An overheated engine isn't likely to cool down enough in just

5

minutes and

not re-trigger the
light and so therefore I'm now suspecting that the sensor is

flaky. Check

the connector on the
sensor on top of the coolant reservoir and make sure that's

fine

(make sure

the wiring connector
is tight). The engine temperature sensor though I'm not sure

exactly where

that is (I had a VR6,
not an I-5).

--
Sent from Gmail for mobile | mobile.google.com

The v-belt does not turn the water pump the timing belt does. I learned
that when my 2 year-old water pump seized up and shredded the timing
belt. When my temp light blinks it means I am low on coolant.

Michael

'93 EV MV


--- In ev_update@..., "Kenny Cummings" <nycnorton@...>
wrote:

And I guess my next question(s) is, how can I determine if the v-belt
is actually spinning the water pump? Is it visible through the hood?

Should I be concerned the motor is not being properly cooled, or
because the temp gauge shows normal temps I can feel with confidence
this is a sensor problem?




--- In ev_update@..., "Kenny Cummings" nycnorton@ wrote:

Thanks folks.

My reservoir for coolant was translucent at one time but seems to

have

clouded after all these years. I put water into the reservoir and

the

fluid level came all the way up to the cap, but I couldn't see any
visible fluid level near the min/max line. I assume this means it's
full (probably too full), but doubt this is my problem.

If I were overheating, or had a faulty circuit board, wouldn't my

temp

gauge be fluctuating? It was not - it was reading as it should -
right in the middle between cool and hot.

-KC
NYC




--- In ev_update@..., "Stephen Kramar" <sgkramar@>

wrote:

I also suspect the sensor based on your description. I've never

had a

problem with mine, but IIRC others have reported cleaning the

sensor

-- I don't know if that is just cleaning the connector or if there

is

something to clean on the end of the sensor.



On 6/4/08, gti_matt <gti_matt@> wrote:

--- Kenny Cummings <nycnorton@> wrote:

Today I took my EV out for a 40-mile errand. No problems at all

on

the way out - free-flowing highway all the way. I was out of

the van

for about 2 hours. When I got back in to come home, I turned

on the

ignition and the temp warning light immediately blinked and

continued

blinking. Temp gauge was low - not hot at all. I drove for

about 5

miles and pulled into a "service" station and read the owner's

manual,

which says it's either a coolant level issue, a blown rad fan

fuse, or

a v-belt off a water pump(!).

The manual is mixing causes and symptoms there in one paragraph.

The light is an indicator of either low coolant level or

excessive

temperatures, period. However
some of those things listed in the manual aren't actually sensed

as a

problem but are potential
causes of the problem that is sensed (if that

makes...er...sense).

Anyway, when *cold*, make sure your coolant level is at the MAX

mark.

If that doesn't fix it, you might be overheating for one or more

reasons

(v-belt off of pump,
stuck thermostat, etc.). But if you're not overheating, then the

sensor

itself is probably
flaking out on you.

Well, this "service" station had no water, but I verified the

coolant was

high enough. The fuse

was not blown. I started it up and the light went off, so I

drove

it down

the highway. After
about 10 minutes it started blinking again. I pulled off again

and turned

off the motor. After
about 5 minutes, I started up and the blinking light was off,

and

didn't

come on again and I made
it home with no issues. It should be noted that at no time did

the

temp

gauge go up beyond a
normal level.

An overheated engine isn't likely to cool down enough in just 5

minutes and

not re-trigger the
light and so therefore I'm now suspecting that the sensor is

flaky. Check

the connector on the
sensor on top of the coolant reservoir and make sure that's fine

(make sure

the wiring connector
is tight). The engine temperature sensor though I'm not sure

exactly where

that is (I had a VR6,
not an I-5).

--
Sent from Gmail for mobile | mobile.google.com

I got in on this one late-
Your light flashing is going to be one of two things- either your
contacts inside the bottle have a thin oily film coating them, or you
need to check your cluster. usually flashing on startup is the
reservoir contacts, and after it warms up you can get it to go away
by shutting it off and back on again. You may want to take the
bottle out and spray it out and flush it with something that will
displace oiliness, like brake parts cleaner.
Otherwise, i have seen the connector contacts at the cluster cause a
flashing coolant light, in fact it was right after I finished
retinning the contacts for the temp/fuel gauge. I could manually
reach up under the dash and hold the connector and make it stop
flashing. retinnning those contacts made it stop.
gomi_

--- In ev_update@..., "Kenny Cummings" <nycnorton@...>
wrote:

Folks,

I'm started a new thread with similar but different issues than
CampbellMeister's.

Today I took my EV out for a 40-mile errand. No problems at all on
the way out - free-flowing highway all the way. I was out of the

van

for about 2 hours. When I got back in to come home, I turned on the
ignition and the temp warning light immediately blinked and

continued

blinking. Temp gauge was low - not hot at all. I drove for about 5
miles and pulled into a "service" station and read the owner's

manual,

which says it's either a coolant level issue, a blown rad fan fuse,

or

a v-belt off a water pump(!). Well, this "service" station had no
water, but I verified the coolant was high enough. The fuse was not
blown. I started it up and the light went off, so I drove it down

the

highway. After about 10 minutes it started blinking again. I

pulled

off again and turned off the motor. After about 5 minutes, I

started

up and the blinking light was off, and didn't come on again and I

made

it home with no issues. It should be noted that at no time did the
temp gauge go up beyond a normal level.

I'm about to embark on a 600 mile round trip this weekend

(hopefully).

Any thoughts on what I'm seeing here?

Thanks,


Kenny C.
NYC

FWI the coolant level sensor, at least for 93, is part of the coolant resivore and is not available seperatly. My local import parts store says it's EV part only.

Joe R

--- Joe R <jromas@...> wrote:

FWI the coolant level sensor, at least for 93, is part of the coolant resivore and is not
available seperatly. My local import parts store says it's EV part only.

I'd have to check for sure but that surprises me. The reservoir looks like the same round thing
that's in a gazillion VWs. I'd be surprised if the sensor is different.

Although the coolant reservoir appears to be the same as those used in
many Jettas, Golfs, Passats etc.
it is indeed a different part number and is not interchangeable with the
common ones.
The sensor within the unit is not a replaceable item and it integrated
within the plastic molding itself.
It is simply two electrical probes that make contact with the coolant
itself. There is no float as with most other
German vehicles, e.g. Mercedes Benz, BMW, etc. The problem is often
corrosion on the external plug contacts
resulting in a lack of continuity. The reservoir only needs to be
replaced when it cracks at the top of at the seam from
age...constant exposure to engine heat, which takes its toll on all
rubber and plastic items found under the hood.

Steve Schock
EUROPARTS-San Diego
The Eurovan parts source
Website: europarts-sd.com
Phone: 858-451-0020

Secure online ordering at:




gti_matt wrote:

Go ahead and check it out. Yes it does look like all the rest of them but I'm told it's different???

Joe

It's different.
gomi_

--- In ev_update@..., "Joe R" <jromas@...> wrote:

Go ahead and check it out. Yes it does look like all the rest of

them but I'm told it's different???

Joe

----- Original Message -----
From: gti_matt
To: ev_update@...
Sent: Thursday, June 05, 2008 11:38 AM
Subject: Re: [ev_update] Blinking Temp Light on '93 EV GL


--- Joe R <jromas@...> wrote:
> FWI the coolant level sensor, at least for 93, is part of the

coolant resivore and is not

> available seperatly. My local import parts store says it's EV

part only.

I'd have to check for sure but that surprises me. The reservoir

looks like the same round thing

that's in a gazillion VWs. I'd be surprised if the sensor is

different.

[Non-text portions of this message have been removed]

'93 VW passat