97 GT problem

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Gumby619 - 21 Jan 2007 22:26 GMT

Here is the problem. Blew top radiator hose the other day, replaced it
and all was well then the radiator started leaking. Put Barsleak in it and
it sealed ok. Today the Bars let loose (I hate that sh.t but my gf was told
by one of the "knowledgeable" people at Kragen that its the best. I put in
alumaseal today and all is well with that but now its overheating like mad.
No water in oil, no oil in water, no moisture or anything coming out of the
exhaust except whets supposed to. When the car overheated today the gauge
didn't say it was that hot but I got a lot of predetonation. cool the car
down and the gauge shows normal temp for car but drive it a couple blocks
and it goes up a little and the ping starts again. Any
help/hints/suggestions? I already ordered another radiator and will have it
Tuesday. Also the thermostat seems to be working, top hose is hot and not a
lot of pressure and I actually saw it compress when the thermostat opened up
(was low on water at that point). I think I have all pertinent info here.
Anything I missed ask away

Gumby619

'97 GT vert

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Brent P - 21 Jan 2007 23:26 GMT

> Here is the problem. Blew top radiator hose the other day, replaced it
> and all was well then the radiator started leaking. Put Barsleak in it and
[quoted text clipped - 7 lines]
> and it goes up a little and the ping starts again. Any
> help/hints/suggestions?

1) Some of that stop leak stuff is known to clog passages, heater cores,
etc.

2) Best to replace the radiator and try to flush the system clean of the
the stop leak products while doing it.

3) Is detonation the only reason you think it's overheating? If so, it's
not likely overheating. Your driver's side spark plug wells are probably
flooded with coolant shorting the plugs. Check them all on both sides
since the hose actually blew out. If you find them flooded the
detonation problem should go away when cleaned up.

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Gumby619 - 22 Jan 2007 00:50 GMT

>> Here is the problem. Blew top radiator hose the other day, replaced
>> it
[quoted text clipped - 25 lines]
> since the hose actually blew out. If you find them flooded the
> detonation problem should go away when cleaned up.

I let it cool down for an hour and added water, it took 2 gallons. when I
got on the freeway it started to heat up then the thermostat opened and it
dropped to normal. I drove it about 10 miles and it was actually running
cooler than normal, I stopped for about 10 minutes and it started heating
up, I drove it thinking it would cool down at speed but alas, no luck. The
radiator is still leaking a little so I'm ordering a new one tomorrow
morning. The predetonation went away till it got hot again. I'm thinking I
may need a new sending unit for the temp gauge too. Its only what, a 10
dollar part? Will post Tuesday with results from new radiator (takes a day
for shipping)

Gumby619

'97 GT vert

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G Unit - 22 Jan 2007 01:22 GMT

Are the electric fans kicking on? Sounds like that could be the (or part of
the) problem.

>>> Here is the problem. Blew top radiator hose the other day, replaced
>>> it
[quoted text clipped - 43 lines]
>
> '97 GT vert

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Gumby619 - 22 Jan 2007 02:43 GMT

Fans working fine

> Are the electric fans kicking on? Sounds like that could be the (or part
> of the) problem.
[quoted text clipped - 46 lines]
>>
>> '97 GT vert

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Brent P - 22 Jan 2007 04:04 GMT

> I let it cool down for an hour and added water, it took 2 gallons. when I
> got on the freeway it started to heat up then the thermostat opened and it
[quoted text clipped - 3 lines]
> radiator is still leaking a little so I'm ordering a new one tomorrow
> morning.

Your radiator is probably not holding enough pressure and thusly the behavior
you are seeing.

> The predetonation went away till it got hot again.

Check the spark plug wells... it only takes a few minutes. The coolant gets
trapped in there by the spark plug boots. It may only make it to the contacts
when the engine warm. It doesn't hurt to pull the boots off and see, unless
they are in such bad shape/corroded that they rip apart, in which case you
need to replace them anyway ;)

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Scot Paxton - 05 Feb 2007 18:09 GMT

Sounds like an air lock to me...

> Here is the problem. Blew top radiator hose the other day, replaced it
> and all was well then the radiator started leaking. Put Barsleak in it and
[quoted text clipped - 15 lines]
>
> '97 GT vert

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