The Most Comprehensive Free Online Reference for Packard Owners
Happy 4th of July! Become a member of Packard Motor Car Information, right now! (it's free)
Login
Username:

Password:

remember me

Lost Password?

Register now!
FAQ's
Main Menu
Recent Forum Topics
Who's Online
39 user(s) are online (36 user(s) are browsing Packard Forums)

Members: 2
Guests: 37

PackardDon, Ozstatman, more...



(1) 2 »


Throttle sticking on 1929 640
Just popping in
Joined:
2015/7/23 19:12
From Excelsior, MN
Posts: 5
Debugging a 1929 640 Roadster.
Throttle does not return to idle and sticks at high speed.
Appears the 10" spring from the Carb throttle shaft to the car frame is not strong enough to return shaft to idle position. Does anyone know what the specifications for this spring are? #'s of force , material, Packard part #.
Any help would be appreciated.
Thanks,
Lou

Posted on: 1/19 14:07:05
Transfer the post to other applications Transfer


Re: Throttle sticking on 1929 640
Not too shy to talk
Joined:
2011/1/20 21:49
From Spokane, WA
Posts: 23
I had a sort of similar problem on my '37 115. There was all kinds of binding in the linkage, and the previous owner threw multiple springs at the problem. Couldn't determine any of that with the springs in place though. Once I replaced the ball joints and sockets on the linkage and freed up a bent shaft, the original spring was just fine.

Posted on: 1/19 16:31:09
Transfer the post to other applications Transfer


Re: Throttle sticking on 1929 640
Home away from home
Joined:
2007/10/28 7:49
Posts: 2381
The throttle cross shaft uses two cheap aluminum bosses on the firewall that wear and inhibit proper action. Sometimes the rivet pins loosen as well and the thing develops slop.

The correct throttle spring is anchored to the driver's side floor board where there is a cast tang.

Added springs are an attempt to fix this problem.

I had the same problem with Billy Hirsch's car and it had under 25,000 miles on it. In that case he went crazy with chrome plating and the parts didn't go back together correctly because the original fit went out the window.

Posted on: 1/19 18:18:55
Transfer the post to other applications Transfer


Re: Throttle sticking on 1929 640
Just popping in
Joined:
2015/7/23 19:12
From Excelsior, MN
Posts: 5
Thanks for the replies.
Do I understand correctly that there should be no spring?
See attached photos.
Thanks,
Lou

Attach file:



jpg  IMG_0425.jpg (863.55 KB)
97814_5e25bc27e2835.jpg 2016X1512 px

jpg  IMG_0426.jpg (814.34 KB)
97814_5e25bc4e8279a.jpg 2016X1512 px

jpg  IMG_0427.jpg (779.93 KB)
97814_5e25bc67225fa.jpg 2016X1512 px

jpg  IMG_0428.jpg (786.27 KB)
97814_5e25bc76b3a6b.jpg 2016X1512 px

Posted on: 1/20 6:43:24
Transfer the post to other applications Transfer


Re: Throttle sticking on 1929 640
Home away from home
Joined:
2007/11/16 10:51
From Dayton
Posts: 2348
Quote:


The correct throttle spring is anchored to the driver's side floor board where there is a cast tang.



Tim
I'm wondering if this location is visible in photos. I, too, am trying to fix "customized" things on Jepson's old Speedster, and I think the current spring location is not correct.

Thanks.

Posted on: 1/20 9:08:52
Transfer the post to other applications Transfer


Re: Throttle sticking on 1929 640
Home away from home
Joined:
2017/4/4 15:24
From Montana, USA
Posts: 229
The spring shown in the photos is not original. There was no spring on the passenger side of the engine.

Posted on: 1/22 13:37:55
_________________
Rob

1930 Custom 8 Club Sedan
Transfer the post to other applications Transfer


Re: Throttle sticking on 1929 640
Forum Ambassador
Joined:
2007/3/14 16:01
From New Jersey
Posts: 16072
Tending to agree with Sherlock, I've got a few photos and 1 factory illustration on that side of a 640/645 motor, no such springs shown.

Posted on: 1/22 15:24:21
Transfer the post to other applications Transfer


Re: Throttle sticking on 1929 640
Home away from home
Joined:
2008/2/24 23:05
From Australia - Sydney
Posts: 427
There is a lug on the LHS of the sloping aluminum floor. The return spring connects horizontally to this lug and the back of the throttle lever, see photo

Attach file:



jpg  Throttle return spring.JPG (578.56 KB)
579_5e294a475f22b.jpg 2048X1536 px

Posted on: 1/22 23:23:45
Transfer the post to other applications Transfer


Re: Throttle sticking on 1929 640
Home away from home
Joined:
2007/11/16 10:51
From Dayton
Posts: 2348
Quote:

DavidM wrote:
There is a lug on the LHS of the sloping aluminum floor. The return spring connects horizontally to this lug and the back of the throttle lever, see photo


THANK YOU!!!

Posted on: 1/23 6:49:43
Transfer the post to other applications Transfer


Re: Throttle sticking on 1929 640
Just popping in
Joined:
2015/7/23 19:12
From Excelsior, MN
Posts: 5
Thanks for the reply. You are correct this spring was added as a poor fix for the problem. I am attaching photos of the accelerator spring and a linkage from it down to the base of the steering wheel.This linkage is very loose and probably shot. What is it for? This seems to be part of the problem.
We cleaned and lubed the throttle shaft but it still hangs up.
What are the three screws on the carb. One seems to be an idle stop , not sure what the others are. The range of motion from slow to fast idle on the lever of the steering wheel seems to be no change halfway up then quickly rises to very fast. Is their a way to broaden the range? Looks like removal and cleaning of entire linkage and bushing replacement will be needed. Do any drawings of these linkages with part #'s exist. ? Thanks,
Lou

Attach file:



jpg  IMG_0439.jpg (79.61 KB)
97814_5e2caf23187d7.jpg 640X480 px

jpg  IMG_0440.jpg (76.06 KB)
97814_5e2caf341902b.jpg 640X480 px

jpg  IMG_0441.jpg (83.77 KB)
97814_5e2caf49aa518.jpg 640X480 px

jpg  IMG_0442.jpg (81.03 KB)
97814_5e2caf5db5cf9.jpg 640X480 px

jpg  IMG_0444.jpg (84.15 KB)
97814_5e2caf71e2253.jpg 640X480 px

jpg  IMG_0443.jpg (79.46 KB)
97814_5e2caf855750a.jpg 640X480 px

Posted on: 1/25 13:14:05
Transfer the post to other applications Transfer



(1) 2 »




[Advanced Search]


Search
Recent Photos
no title (2020/7/6)
no title
July 4th 2020 Parade Packard (2020/7/4)
July 4th 2020 Parade Packard
1947 packard (2020/7/2)
1947 packard
DSC05939.JPG (2020/6/27)
DSC05939.JPG
Anton Kneer (2020/6/13)
Anton Kneer
Random Photo
1958 Packard 4-door sedan, three-quarter left side view
Helping Out
PackardInfo is supported and funded by user donations. If you would to help out by either donating content, or funds to help with the upkeep and hosting of this site please EMAIL ME or click on the donate button.