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The tale of a wounded Fiero

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Shakey Dave View Drop Down
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Post Options Post Options   Quote Shakey Dave Quote  Post ReplyReply Direct Link To This Post Topic: The tale of a wounded Fiero
    Posted: 15 July 2011 at 6:47pm
Thanks Patrick for telling me where I could find out how
to burp my Fiero. I hope you don't mind if I continue the
PM link on the regular Forum where it might help some
other members.

A little more of the story revealed itself after I picked
up my car at ASC. We headed for home on Powell St.(in the
eastern end of downtown Vancouver) and got about 2 kms
when the car quit right in the middle of rush hour
traffic. After what seemed like an hour(actually only
about 3 minutes)of honking traffic, rude gestures and
lots of yelling, the car started again and we pulled away
to turn left onto a deserted street where the Fiero quit
once more, but this time with lots of noise and what
sounded like three explosions from under the car. The
heat gauge was also pegged at the maximum!

After enjoying the ride home via BCAA, my son came up
with an initial diagnoses of a seized water pump,
(through which all of the coolant had drained)and he will
try to fix it tomorrow. He explained that the explosions
were actually the bearings in the water pump expiring
with a bang.

Does his diagnosis sound reasonable (before I spend
another $85 on a new water pump)or is there another
diagnosis?

BTW: ASC did a fantastic job on my upholstery (sp). They
are real professionals, and they charge reasonable rates.
Their work was the final step in getting my car ready for
collectors plates ... it now looks almost like new, both
inside and out!
"Shakey" Dave Hathaway
www3.telus.net/myhistory
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Dawg View Drop Down
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Post Options Post Options   Quote Dawg Quote  Post ReplyReply Direct Link To This Post Posted: 15 July 2011 at 9:07pm
When water pumps start to go they usually make squeak noises if the bearings are that bad.  If they lock right up, which would be rare indeed, the fan belt would howl like mad.

My best guess would be you ran the water dry and the motor overheated and you've done some internal damage.

Try turning the motor over.  Do you hear any funny noises?  Does it crank over smoothly or with great effort?

Remove the alternator belt and start the engine.  Does it run?  Sound normal?  Rev it up once or twice to 3000 RPM and listen for any unusual sounds.  Don't run it for more than a minute like this because you have no cooling.

If it doesn't run or runs oddly with the belt off, you've done some damage.  Even if it runs i would make sure there is no oil in the water or water in the oil in case you've warped the heads.

The Dawg
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Shakey Dave View Drop Down
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Post Options Post Options   Quote Shakey Dave Quote  Post ReplyReply Direct Link To This Post Posted: 16 July 2011 at 12:20pm
Thanks for the info Dawg

We took the car partially apart yesterday afternoon/night
and it looks like the water pump blew up in a big way.
My son (a qualified auto mechanic visiting from Nelson
for a few days) did most of what you suggested and he
says that the engine seems to have survived with little
if any damage. It ran fine with no strange noises when
we started it and he couldn't see any water in the oil,
nor oil in the water. Is it possible that this miracle
may have been because of the Castrol Syntec that I use in
the car!

Oh well, I'll have to wait until my son puts it all
together again with a new water pump and more testing.
"Shakey" Dave Hathaway
www3.telus.net/myhistory
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Capt Fiero View Drop Down
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Post Options Post Options   Quote Capt Fiero Quote  Post ReplyReply Direct Link To This Post Posted: 16 July 2011 at 10:16pm

Those bangs were water pockets inside the cooling system expanding.  With the Fiero's coolant pipes under the car, as it overheats and boils and pushes hot bubbles through the system it can act like a giant speaker and make loud bangs in the cabin.

         I would bet more on a bad thermostat, or poorly filled cooling system than a burnt up pump, they almost always start leaking before they go bad, and leak so much that you would have seen a puddle of water under the car after a short drive.

      However if your son is doing the pump already, just tell him to make sure and use thread sealant on the bolts as many of them go directly into the water jackets on the motor and the timing cover.

Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.
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Shakey Dave View Drop Down
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Post Options Post Options   Quote Shakey Dave Quote  Post ReplyReply Direct Link To This Post Posted: 18 July 2011 at 1:12pm
We purchased a new water pump from Lordco and after some
difficulty with the bolts etc, we finally got it
installed. However, when we put water into the system to
test it, the water poured out of what seemed to be the
bottom of the pump! We used sealant on all the threads
but we didn't have the equipment (beyond the jack that
came with the car) to lift the car so we could get
underneath.

My son has gone to the Artists For Kids Camp to work for
this week, so I don't have him around to help me. And
when he does get back here, it will only be for a couple
of days. So I want to see if I can better diagnose the
problem for him.

Is it possible that the long coolant pipe from the rad
ruptured as a result of the loud bangs that we heard when
the car quit?

Any other ideas?

Thanks for your time, tips and suggestions.

"Shakey" Dave Hathaway
www3.telus.net/myhistory
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Dawg View Drop Down
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Post Options Post Options   Quote Dawg Quote  Post ReplyReply Direct Link To This Post Posted: 18 July 2011 at 1:39pm
It is possible that the rubber hose going to the coolant pipes has a leak.  Additionally, there are lines going to the heater core in that area.

Yes, you need to get that car in the air so he can have a good look.  Go buy yourself a decent floor jack....:)

The Dawg
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Capt Fiero View Drop Down
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Post Options Post Options   Quote Capt Fiero Quote  Post ReplyReply Direct Link To This Post Posted: 18 July 2011 at 4:32pm
Directly below the water pump closest to the rear head, is the main frost plug.  From the factory a great number of Fiero's had block heaters installed there, with cheaper rubber O Rings.  If the frost plug / block heater is leaking you will see water exactly where you are talking about.The loud bang/pop you heard could have been the plug popping out.   I replaced mine with a rubber expansion plug and it worked perfect.  The rubber plug is about 10 bucks from Lordco and should outlast the motor.
Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.
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Post Options Post Options   Quote Indy Quote  Post ReplyReply Direct Link To This Post Posted: 18 July 2011 at 9:30pm

Dave

If you want, I can "walk" my toolbox up the hill to your place, bringing along my floor jack and blocking if you don't already have them, and we can try to diagnose the problem.

Gary @ 604-986-8199

 

 

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Post Options Post Options   Quote Indy Quote  Post ReplyReply Direct Link To This Post Posted: 20 July 2011 at 7:38pm

Folks

I went to Dave's place today and had a look at his problem.

When we added water at the engine filler it immediately poured  out of what turned out to be the water pump gasket area. After removing the new water pump it was quite apparent that the gasket was a bit oversized and had been damaged when it was installed. Lousy looking gasket that without some pre-installation surgery would not fit no matter how much care was used.

Dave ordered a new $ 4 one from Lordco, and we will install it on Friday.

Will that solve the problem or was the water pump defective in the first place? We don't know, but when it is back together again and full of coolant, we will try it again. Hopefully the loss of coolant (that did happen) did not actually damage anything.

Gary Hawthorn

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Shakey Dave View Drop Down
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Post Options Post Options   Quote Shakey Dave Quote  Post ReplyReply Direct Link To This Post Posted: 22 July 2011 at 7:57pm
Good News ...

My Fiero is fixed and the engine appears to be in good
working condition. Thanks to the people who offered help
and advice, particularly The Dawg, Patrick, Capt Fiero,
Dr Fiero, my son Mike (an auto mechanic who just happened
to be visiting from Nelson), and Gary Hawthorn (Indy) who
came up the hill to my house, diagnosed my problems, and
took the water pump etc. out of the car so that my son
didn't have as much work to do.

Thanks again

"Shakey" Dave Hathaway   

"Shakey" Dave Hathaway
www3.telus.net/myhistory
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beken View Drop Down
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Post Options Post Options   Quote beken Quote  Post ReplyReply Direct Link To This Post Posted: 23 July 2011 at 10:59am
Glad to hear your car's running again, Dave.
I've only replaced my waterpump once on my car so you're good to go for awhile again.



Beken (aka Ken) - bekentech@westcoastfieros.com   Original and still the owner of an 85SE 2M6 4spd
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