Cadillac in Southern Ontario
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Author Topic: What did you do to your Cadillac today  (Read 549983 times)
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57chevyowner
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« Reply #3120 on: February 25, 2018, 02:38:57 PM »

2 important questions:

Are you (and any passengers) ok?  No burns?

Which car?

Sam
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Owner:  Maid O'Mud Pottery
1957 Chevy Belair "Karma"
1967 Chevy Van (C90)
1981 Cadillac Eldorado Biarritz TS "Cali Dreamer"
2006 Cadillac DTS "DCC (Dirt Coloured Caddy)"
2014 GMC Sierra 5.7
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« Reply #3121 on: February 25, 2018, 03:33:16 PM »

In our climate, the aluminum heater cores with plastic end tanks will fail suddenly at the 20+ year mark under normal cooling system pressure.  The original in my aunt's STS failed after 23 years (end of summer), but clean-up was easy thanks to the deep floormats.
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« Reply #3122 on: February 25, 2018, 04:15:25 PM »

My friend that was in tha passenger seat got a scalded foot but he will be ok. It was the Concours.

I hope this isnt going to cost me too much. I have found another shop that won't rip me off.

GJ
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Some people are like a Slinky. Not really good for anything, but you still can't help but smile when you shove them down the stairs.

1993 Sedan De Ville
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Jon
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« Reply #3123 on: February 25, 2018, 04:31:16 PM »

Dang.
Overheating on the highway points to a bad radiator, waterpump or thermostat.  Since I think you did the pump recently I guess it's down to the others. The less common one would be clogged coolant passages. 
The only one of my cars that hasn't had a radiator that I've had to put in is Peach. 
Chester and the Wildcat both had overheating on the highway issues.  Rocky sprung a leak.
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68 Buick Wildcat Custom Convertible 455 4bbl (Wild Kitty)
85 Cadillac Fleetwood Brougham (Chester)
92 Buick Roadmaster Wagon (Peach)
96 Buick Roadmaster Wagon Collector's Edition (Rocky)
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« Reply #3124 on: February 25, 2018, 04:36:21 PM »

As for Chester,
I hooked up the battery tender and then sat in front of it on a folding chair while the girls rode their bikes.  Nice 8degC weather.   I did the spring overhaul on both bikes (brake adjustment, seat adjustment, tire pump, chain lube) and needed to replace the pedal on 1 bike. Swapped over kick-stand and streamers (a must on Kayda's bikes) from an older bike.
Spring is near!
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68 Buick Wildcat Custom Convertible 455 4bbl (Wild Kitty)
85 Cadillac Fleetwood Brougham (Chester)
92 Buick Roadmaster Wagon (Peach)
96 Buick Roadmaster Wagon Collector's Edition (Rocky)
GM Engineering
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« Reply #3125 on: February 26, 2018, 09:22:56 AM »

I had another look today. There is coolant in the overflow tank and the passenger side floor mat doesnt have much coolant in it. I was wondering if it might be a bad thermostat. It was running cool and never got above 91C.

It's at Minuite muffler right now. They said they can get it in later today.

GJ
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Some people are like a Slinky. Not really good for anything, but you still can't help but smile when you shove them down the stairs.

1993 Sedan De Ville
1994 Fleetwood Brougham
1996 DeVille Concours
1982 Fleetwood Brougham D'Elegance  SOLD
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« Reply #3126 on: February 26, 2018, 09:46:34 AM »


 Perhaps the heater core being the weak link let go when the engine got hot. The core issue may be a bad thermostat restricting flow. Even in the milder weather, a slightly restricted rad shouldn't restrict flow enough for the engine to get that hot. If it were, it would have revealed itself on the trip to Toronto.

 Mike
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1970 Fleetwood Brougham 68169 - Lucille
1987 Brougham 6DW69 - Victoria
1990 Brougham d'Elegance 6DW69 - Vera
1991 Seville STS 6KY69 - Clara
1994 Fleetwood Brougham 6DW69 - Joan
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« Reply #3127 on: February 26, 2018, 10:55:38 AM »

While investigating odd cooling system behaviour, the first thing to check is the purge line that runs from the thermostat area to the surge tank.  There have been reports of debris plugging the feed orifice or even somewhere inside the line itself.  The orifice is located at a local high point and loss of flow may affect the performance of the inlet thermostat.
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« Reply #3128 on: February 26, 2018, 10:59:53 AM »


 Interesting. That was an issue in the old Detroit Series 55 powered buses we had. The vent line from the surge tank to the thermostat housing would plug leading to hot running conditions, particularly if any cooling system service was performed. It was routine to check that line anytime the system was drained.

 Mike
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When I read about the evils of drinking, I gave up reading

1970 Fleetwood Brougham 68169 - Lucille
1987 Brougham 6DW69 - Victoria
1990 Brougham d'Elegance 6DW69 - Vera
1991 Seville STS 6KY69 - Clara
1994 Fleetwood Brougham 6DW69 - Joan
1996 Chevrolet Caprice Classic 1BL52
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« Reply #3129 on: February 26, 2018, 01:11:58 PM »

I would never have thought of that.
Thanks for the advice. I'll check it out.

GJ
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Some people are like a Slinky. Not really good for anything, but you still can't help but smile when you shove them down the stairs.

1993 Sedan De Ville
1994 Fleetwood Brougham
1996 DeVille Concours
1982 Fleetwood Brougham D'Elegance  SOLD
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« Reply #3130 on: February 27, 2018, 09:42:48 AM »

New heater core is in. I pick the car up today.
$427 taxes in. They couldnt find anything else wrong with the cooling system.

GJ
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Some people are like a Slinky. Not really good for anything, but you still can't help but smile when you shove them down the stairs.

1993 Sedan De Ville
1994 Fleetwood Brougham
1996 DeVille Concours
1982 Fleetwood Brougham D'Elegance  SOLD
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« Reply #3131 on: February 27, 2018, 11:01:07 AM »


 Good to hear. But the question is still there why it overheated in the first place.

 Mike
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When I read about the evils of drinking, I gave up reading

1970 Fleetwood Brougham 68169 - Lucille
1987 Brougham 6DW69 - Victoria
1990 Brougham d'Elegance 6DW69 - Vera
1991 Seville STS 6KY69 - Clara
1994 Fleetwood Brougham 6DW69 - Joan
1996 Chevrolet Caprice Classic 1BL52
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« Reply #3132 on: February 27, 2018, 01:23:00 PM »

The coolant may have been a bit low, but I cant say for sure.
It is keeping cool now.
I'll just have to keep an eye on it and I'll put a new thermostat in for safe measure.

GJ
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Some people are like a Slinky. Not really good for anything, but you still can't help but smile when you shove them down the stairs.

1993 Sedan De Ville
1994 Fleetwood Brougham
1996 DeVille Concours
1982 Fleetwood Brougham D'Elegance  SOLD
RONNIE
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« Reply #3133 on: March 10, 2018, 02:41:53 PM »

I think it's safe to say that the worst of this winter is gone bye-bye but I'm not going to hold my breath.
I'm itching to get my Eldorado uncovered so I can get it ready for summer. I have a bunch things that
have to be taken care of so I can use it. I have to get that passenger side exhaust manifold leak fixed.
We don't know if it's the manifold gasket that leaks or if the manifold itself is cracked. You can't see
anything because all the pollution equipment is in the way. Can cast iron be welded so it's strong enough
to not come apart from all that exhaust heat or should I try to find another manifold ?
I have to get the bumpers off so I can replace some of the right side filler pieces and the vinyl roof
needs to be re-coloured
I'm not sure if I should have a tune up done. The last time one was done was 10 years ago but I haven't
put more than 25,000 - 30,000 miles on it since then so I don't know if it really needs it.

RON
« Last Edit: March 10, 2018, 02:45:29 PM by RONNIE » Logged

'85 Eldorado Biarritz
'09 Dodge Caliber
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57chevyowner
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« Reply #3134 on: March 10, 2018, 05:20:14 PM »

My daily driver (06 DTS) has lost the seat memory a couple of times in the last 2 months.  It has a little over 172k.  The battery is about 2 years old and according to the reading on my dash is charging in the 14.2-14.3 range consistently.  No problems starting.

Back in 2012 the driver seat quit.  It went to 2 shops (2nd was the Cadillac dealer) and between the 2 shops cost me over 1,000 to fix. 

Any ideas of what might be going on?

Sam
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Owner:  Maid O'Mud Pottery
1957 Chevy Belair "Karma"
1967 Chevy Van (C90)
1981 Cadillac Eldorado Biarritz TS "Cali Dreamer"
2006 Cadillac DTS "DCC (Dirt Coloured Caddy)"
2014 GMC Sierra 5.7
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