Re: Overheating '93 V6

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Old 24 Jun 2006, 07:39 am   #1 (permalink)
johnin
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Default Re: Overheating '93 V6


History
Overheated after about 10 miles at 70mph, spotted it straight away an
pulled over. Taken home on an AA truck. Put it into a non-Toyota garag
who replaced the radiator cap and core.....goodbye to 350 qui

Overheated again after about 100 miles at 70mph (coolant level wa
definitely ok at radiator cap at start of journey), spotted it straigh
away and pulled over. Taken home on an AA truck. Guy in the garag
hasn't got a clue. I'm not going back to that muppet. Have been usin
the car since and topping up the coolant with about 100ml for every 2
mile trip (fortunately this is not the main family car and I can use i
for my commute only, never more than 20 mile trips)

After scrutiny, the symptoms are as follows

When parked up after the engine has been hot the expansion tank i
overflowing, leaving a puddle under the ca
The top hose looks partially collapsed indicating a partial vacuu
When I remove the radiator cap the vacuum is released and air enter
the system giving me the room to put the water i
The engine pings like crazy as it cools down, not having overheate
according to the temperature gauge. I don't know if this normal for
Camry..it was second hand and has always done it since I've owned i
Engine and transmission oil do not emulsif
Engine starts and runs smoothly, power seems o
Exhaust seems fine, no smoke/stea
Heater works ok (except when it is right out of coolant

Anyone out there that can advise me please
unscrew the spark plugs and check for any signs of anti-freeze on the
ends of the electrodes if you find any you have the early stages of a hea
gasket leak if nothing is present find a shop that carries a machine that ca
check/analyise your coollant for exhaust gases take care of it asap befor
it harms and eventually ruins your engine

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johnin

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Old 25 Jun 2006, 08:22 am   #2 (permalink)
NickySantoro
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Default Re: Overheating '93 V6

On Sat, 24 Jun 2006 14:39:44 +0200, johnin
<johnin.29xcn4@no-mx.carstalk.net> wrote:

>
>History:
>Overheated after about 10 miles at 70mph, spotted it straight away and
>pulled over. Taken home on an AA truck. Put it into a non-Toyota garage
>who replaced the radiator cap and core.....goodbye to 350 quid
>
>Overheated again after about 100 miles at 70mph (coolant level was
>definitely ok at radiator cap at start of journey), spotted it straight
>away and pulled over. Taken home on an AA truck. Guy in the garage
>hasn't got a clue. I'm not going back to that muppet. Have been using
>the car since and topping up the coolant with about 100ml for every 20
>mile trip (fortunately this is not the main family car and I can use it
>for my commute only, never more than 20 mile trips).
>
>After scrutiny, the symptoms are as follows:
>
>When parked up after the engine has been hot the expansion tank is
>overflowing, leaving a puddle under the car
>The top hose looks partially collapsed indicating a partial vacuum
>When I remove the radiator cap the vacuum is released and air enters
>the system giving me the room to put the water in
>The engine pings like crazy as it cools down, not having overheated
>according to the temperature gauge. I don't know if this normal for a
>Camry..it was second hand and has always done it since I've owned it
>Engine and transmission oil do not emulsify
>Engine starts and runs smoothly, power seems ok
>Exhaust seems fine, no smoke/steam
>Heater works ok (except when it is right out of coolant)
>
>Anyone out there that can advise me please?
>unscrew the spark plugs and check for any signs of anti-freeze on the
>ends of the electrodes if you find any you have the early stages of a head
>gasket leak if nothing is present find a shop that carries a machine that can
>check/analyise your coollant for exhaust gases take care of it asap before
>it harms and eventually ruins your engine.


It sounds like you may have the wrong radiator cap and possibly an
obstruction in the hose to the recovery tank. Seems like it flows out
when hot and can't draw back in as it cools.
FWIW
YMMV
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