William Mott
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  • Spring Branch, TX
  • United States
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William Mott's Discussions

AC Trouble shooting Help?

Started this discussion. Last reply by Kurt May 18. 12 Replies

Good Evening all,I just got the 63 caddy back on the road: cleaned up the tank, new sending unit, new Edelbrock electric fuel pump, and Edelbrock relief valve.  Still had some vapor lock, but…Continue

Tags: AC

Guidematic help

Started this discussion. Last reply by Tony and Ginny 429 Apr 25. 4 Replies

Evening!63 Cadillac with Guidematic, rebuilt, usually pretty reliable.  Now, after turn on and warm up, a dark rag over the eye only makes a clicking sound in the glove compartment.  Ground checked…Continue

Tags: Guidematic

Firewall interior cardboard liner

Started this discussion. Last reply by Jason Edge Feb 3. 1 Reply

Good evening all,I’m looking for some help with the interior firewall.  Up under the dash to the right of the steering wheel is where the guidematic power relay attaches.  It is attached to the…Continue

Service tag

Started this discussion. Last reply by Matti Roth Jan 18. 1 Reply

Anyone know where to get a new service tag? Mine is old and broken, it does have the engine number on it.Thank you…Continue

 

William Mott's Page

Latest Activity

Kurt replied to William Mott's discussion AC Trouble shooting Help?
"Glad you got it sorted out. Be careful what you ask for. Sometimes it seems like my cars are actively thwarting my efforts to have everything functioning properly at the same time."
May 18
William Mott replied to William Mott's discussion AC Trouble shooting Help?
"Thank you all, I am happy to report 48F at the center vent in 90F temp.  Cooling began once I added the fourth can and seemed to stabilize when I hit 54 ounces.  On the help page, the ac article mentioned 34 oz; I think this will a great…"
May 17
Tony and Ginny 429 replied to William Mott's discussion AC Trouble shooting Help?
"Kurt  There is a chart  - the air conditioning performance chart  It gives you  what the low and high pressure numbers SB on your AC  gauges based on the temp and humidity on the time and day  you  are check your…"
May 17
Kurt replied to William Mott's discussion AC Trouble shooting Help?
"I just realized that I calculated the capacity wrong. The system is designed for 4 lbs or 64 oz of R12. The general rule is to use slightly less R134a (75-90% of full charge) so if you are at 36 oz  you are only at 56% full charge. That could…"
May 16
Kurt replied to William Mott's discussion AC Trouble shooting Help?
"What is the air temp at the center vent now? Did it change? It doesn't sound like you have a vacuum leak. There is also a bowden cable attached to the temperature lever that controls if air flows through heater core. Make sure that is…"
May 16
William Mott replied to William Mott's discussion AC Trouble shooting Help?
"Good evening All, With your great help I think I am making some progress. I turned the air conditioner on and checked vacuum:  I have vacuum to the water coolant valve, I have vacuum to the door controlling foot heat versus front panel flow AC…"
May 16
Tony and Ginny 429 replied to William Mott's discussion AC Trouble shooting Help?
"My AC system never got the —after market STV kit installed —-in my stock STV when the Freon was changed from R12 to 134a so your advice should improve or fix my issue with how cold my AC gets and that would be a very wonderful thing for…"
May 16
Tony and Ginny 429 replied to William Mott's discussion AC Trouble shooting Help?
"Kurt  Thank you very  very much for that feedback  Not sure how you figured  that out  but if reducing the pressure from 30lbs to 28 works with the stock STV  and 134a  replacement Freon —that is a wonderful…"
May 16
Kurt replied to William Mott's discussion AC Trouble shooting Help?
"I'm using the stock STV adjusted to 28PSI. This does allow to the evaporator to reach the optimal temperature for maximum cooling which is right at 32 degrees. If the evaporator is colder than that, ice forms on it which does not allow the…"
May 16
Tony and Ginny 429 replied to William Mott's discussion AC Trouble shooting Help?
"Kurt  Are you using the  recommended after market kit used on  the stock STV when going to the 134a Freon —-Or —did you stock readjustment of the stock STV from 30 lbs to the 28lbs do what is required so that  the STV…"
May 15
Mark S Anderson replied to William Mott's discussion AC Trouble shooting Help?
"you oughtn't need any more 134.   By the pressure readings, your STV is probably fine, you have no air going through the evaporator.     Either your temperature duct isn't moving to the cold air position or their…"
May 15
Kurt replied to William Mott's discussion AC Trouble shooting Help?
"I'm assuming the temperature lever is all the way left on the "cooler" setting, correct? 36 oz is probably enough R134a. The system holds 4lbs (48oz) but is designed for R12. I think I run about  3 1/2lbs of r134a in mine and get…"
May 15
William Mott posted a discussion

AC Trouble shooting Help?

Good Evening all,I just got the 63 caddy back on the road: cleaned up the tank, new sending unit, new Edelbrock electric fuel pump, and Edelbrock relief valve.  Still had some vapor lock, but insulating the inbound line seems to have fixed that.But I did an AC recharge and didn’t get good results.  Vacuumed it out, checked for leaks, and put in 36 oz of R134.  40 psi on low, about 175 on high.  Big low pressure line gets cold, Suction Throttle Valve are gets very cold, frosty even, and yet I’m…See More
May 15
Tony and Ginny 429 replied to William Mott's discussion Guidematic help
"Regarding repairing anything electrical in our year Cadillacs —-ALWAYS - clean up the ground connections FIRST thing to be saving yourself a lot of other work and expense  Most electrical stuff will come back to life just doing…"
Apr 25
Jason Edge replied to William Mott's discussion Guidematic help
"Electrons with nowhere to go will shut you down every time. Glad it was a simple fix."
Apr 25
William Mott replied to William Mott's discussion Guidematic help
"Update: I had not tightened the attaching bolts down to the frame above the glove box. Yet again, a failure to check all grounds on the Guidematic! A repeat lesson it seems… thank you,"
Apr 25

Profile Information

Do you own any 1963 & 1964 Cadillacs? If Yes, Year & Body Style
1963 Series 62 Convertible
Cadillac LaSalle Club Member? If Yes, Membership #?
No
1963/64 Cadillac Chapter Member?
No

Comment Wall (1 comment)

You need to be a member of 63/64 Cadillac Website to add comments!

Join 63/64 Cadillac Website

At 2:34pm on July 21, 2021, Jason Edge said…

Welcome to the 63/64 Cadillac Website.

This site is hosted by the CLC (Cadillac LaSalle Club) 1963/64 Cadillac Chapter. Joining the website is free to everyone, however, you must be a CLC member to join the Chapter. 

- Click on www.join.6364cadillac.com for more information on joining the 1963/64 Cadillac Chapter and the Cadillac LaSalle Club.

Be sure and check out all the links and pages and make yourself at home. The Help Page at www.help.6364cadillac.com will have links to many useful articles and information about our Cadillacs.

 
 
 

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Forum

64 tranny mount

Started by Ron Perry in 1963/64 Cadillac Specific Discussion 4 hours ago. 0 Replies

Hi Guys Hoping someone could recommend a vender where I can purchase a transmission mount for my 64 Sedan De Ville.  Thanks!Continue

Jason's September 26, 2022 Ramble - Gone Like a '64 Cadillac

Started by Jason Edge in General Discussion. Last reply by Jason Edge 4 hours ago. 2 Replies

Well, parts car #58 is history. Rear end came out late yesterday (1st Picture below), it was delivered to the metal yard this morning (2nd picture) and for the first time since I bought my 2013…Continue

Was there Originally Carpet Inside 1964 Eldorado Center Console?

Started by C. Van Tune in 1963/64 Cadillac Specific Discussion. Last reply by Bobby Brown 16 hours ago. 6 Replies

Is there supposed to be carpet inside the '64 Eldo center console?There is carpet in mine, and it's a deeper pile than what's on the floor (which has probably been replaced.)Here's some pix of mine.…Continue

63 Lower Front Bumper Ends?

Started by Peter Greenway in Wanted to Buy. Last reply by Peter Greenway 22 hours ago. 3 Replies

I'm looking for 2 good condition lower front bumper ends for a 1963 car. Can anyone help please?Continue

Blog Posts

Trunk Open and Lock Mechanism is in Closed Position

Posted by Chris Anderson on September 13, 2022 at 7:14pm 7 Comments

While working on my trunk lock on 64 Cadillac, I mistakenly closed the locking mechanism while the trunk was open.  Is there an easy way to manually release the lock back to the open position?

Thanks.

Fuel Pump Failure

Posted by Jon Shields on August 6, 2022 at 6:48am 4 Comments

Hello,

I'm located in Melbourne, Australia and my 64 sedan de ville is stuck in the garage due to failed mechanical fuel pump. The first after market mechanical fuel pump lasted a few years before it failed & left me stranded 5 hours from home. A hire car and tow got us home. On inspection, I noticed a valve not seated within the housing. I was optimistic, pressed it into place and assumed the pump was good to go. But alas, no. From what I can now determine, the diaphragm pushrod…

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Renovation project 1964 Cadillac Deville convertible

Posted by Balachne on May 31, 2022 at 7:00am 3 Comments

Renovation project 1964 Cadillac Deville convertible

 

Introduction

To achieve an excellent result of vehicle restoration, it is essential to  manage this task as one manages an industrial project.

To do this we will use a certain formalism of project management and therefore start by defining the need. It is from this that we will deduce the scope, then the time of execution of the…

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I was working on my HVAC system this winter and during the process of taking the dash pad off these two parts fell out. Does anyone know what they are and where they go?

Posted by Patrick Westphal on April 12, 2022 at 1:35pm 1 Comment

I was working on my HVAC system this winter and during the process of taking the dash pad off these two parts fell out. Does anyone know what they are and where they go?

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