Cadillac in Southern Ontario
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Author Topic: What did you do to your Cadillac today  (Read 632605 times)
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RONNIE
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« Reply #3255 on: August 04, 2018, 12:28:08 PM »

Very generous of you Rene, thank you.

RON
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« Reply #3256 on: September 20, 2018, 10:04:14 AM »

Two weeks ago my waterpump crapped out and dumped coolant all over the optispark on my Fleetwood.
I spent the past 2 days replacing the opti and water pump.
A voltage test showed that the battery was charging at 14.8 volts so I replaced the alternator and put a new AGM battery in. I got 10 years out of the old one.
Getting ready for a road test now.

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
KevinW
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« Reply #3257 on: September 20, 2018, 11:03:08 AM »

Was the waterpump original? 

14.8 volts is normal for a cold regulator.
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« Reply #3258 on: September 20, 2018, 01:01:16 PM »

No. I replaced it about 8 years ago.
 Really? I was told anything over 14.2 was too high.
I have owned the car for 10 years now and the alt has never been replaced.
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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
Jon
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« Reply #3259 on: September 22, 2018, 07:33:41 AM »

I did the spark plugs on Rocky last weekend and I hope to do Peach this weekend. That's a job that definitely has increased in difficulty over the years.
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68 Buick Wildcat Custom Convertible 455 4bbl (Wild Kitty)
85 Cadillac Fleetwood Brougham (Chester)
92 Buick Roadmaster Wagon (Peach)
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« Reply #3260 on: September 22, 2018, 08:20:44 AM »

I'll agree with that. Every time I replace plugs on an LT1 I lose skin off my knuckles.
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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
Jon
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« Reply #3261 on: September 22, 2018, 03:50:37 PM »

While the oldest daughter and Tegan were sleeping (they weren't feeling well), younger daughter and me went outside and did the spark plugs on Peach. I had to do more of them from under the car than I did on Rocky, but the driver side ones were nice and easy to get at and teach her what was going on. She came in handy when I was under the car cause she had a much easier time then me crawling around to get me my different tools.
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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
KevinW
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« Reply #3262 on: September 22, 2018, 08:03:34 PM »

Really? I was told anything over 14.2 was too high.
I have owned the car for 10 years now and the alt has never been replaced.

Preventative maintenance is always the more convenient option in the long run; keep the original unit as a spare and see if it needs new brushes and a front bearing so it's ready to be pressed back into service.

The internal resistance of the battery increases at lower temperatures, so a slightly higher voltage is necessary to drive the charge current to a desired level.  In the winter, a system voltage over 15.0 may be observed after a cold start.  In addition to battery and regulator temperature, there's also the positioning of the electrodes, the load on the 12 V system, calibration of the voltmeter, as well as the condition of the battery, as internal resistance increases with age.

When the original voltage regulator in the Delta 88 failed, the factory Reminder Package did an admiral job of indicating that the charging voltage was too high.  I measured over 16 V on a summer evening with a hot engine compartment; a spare 12SI swap took ~15 minutes.  About 3 years ago, I replaced the voltage regulator and brushes, greased the bearings, then re-installed the original.
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guidematic
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« Reply #3263 on: September 26, 2018, 08:58:51 AM »


 With all honesty, I have to say that I have not seen voltage go over approx. 14.2V at any time unless the alternator is over charging. This over charge state continues after some time.

 Also, it seems normal for many to be in the 13.8V range, this goes back to my days at the dealer.

 Mike
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1970 Fleetwood Brougham 68169 - Lucille
1987 Brougham 6DW69 - Victoria
1990 Brougham d'Elegance 6DW69 - Vera
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1994 Fleetwood Brougham 6DW69 - Joan
1996 Chevrolet Caprice Classic 1BL52
KevinW
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« Reply #3264 on: September 27, 2018, 11:57:14 AM »

After returning from a recent short run, I heard an unusual hissing sound at idle while the hood was open.  There was no apparent driveability issue; electronic controls often mask deviations within a certain range.  This is what I spotted!

BTW, the DIC-reported voltage was initially 14.9, which fell to 14.3 at hot idle upon returning home.  The Group 79 ACDelco battery is 14 years old, but looks brand new thanks to its location under the rear seat.  A battery analyzer estimates the internal resistance at 4.57 mΩ, which is higher than for a new, flooded lead-acid battery, but still within serviceable limits.  

In addition to battery condition, I suspect there's a significant difference in measurements made across the battery terminals immediately after a cold start versus observations made after a vehicle has been driven into a shop.

The internal resistance of a heavily sulphated, "dead" battery would be over 10 mΩ.  When a constant-current, 1 A charger is connected, the charge voltage quickly rises to 15.5 or higher.  It takes more voltage to push 1 A into an old battery.


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Jon
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« Reply #3265 on: September 27, 2018, 07:12:11 PM »

That looks like it was chewed.
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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 #3266 on: September 28, 2018, 11:27:57 AM »

Yes, something must have been chewing a pine cone, corn on the cob style, and overshot a bit.  They've also found that hood insulation makes a good mattress and bed cover.
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« Reply #3267 on: September 29, 2018, 07:41:41 AM »

Maybe you should get a cat.

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
KevinW
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« Reply #3268 on: September 30, 2018, 03:56:01 PM »

Maybe you should get a cat.

Earlier this year, there were "too many" squirrels around.  Then a fox moved into the neighbourhood.  Problem solved.  Smiley
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« Reply #3269 on: October 01, 2018, 09:43:27 AM »

Squirrels are the most destructive rodents I've ever seen.
 They chewed a hole through my shed door and took up residence. I'm thinking about finding someone with a ferret that I can borrow for a while....also a friend of mine says they are pretty good eating.

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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