Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 924/944/968 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
daxdog's Avatar
 
Join Date: Jul 2004
Location: Collierville, TN
Posts: 116
Crazy Speedo

No. I'm not going to model my new Speedo for you. I'm having issues with my speedometer. When I get up around 60-70mph in my 944, sometimes the speedometer goes ape-!@$ and jumps up to 130-140mph. Eventually it will come back down. Also, the speedometer is saying that I am actually travelling faster than I really am. My wife was following my home and we talked on the cell phones. The speedometer was generally showing about 15% higher than my actual speed. What do I need to fix? Should I replace the speedometer cable? Is that difficult?
__________________
1984 Porsche 944 Silver/Black
Old 07-27-2004, 07:15 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
daxdog's Avatar
 
Join Date: Jul 2004
Location: Collierville, TN
Posts: 116
tap tap tap... Is this mic on? whhhhhh..whhhh... Test..1,2,3....
__________________
1984 Porsche 944 Silver/Black
Old 07-28-2004, 06:31 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
Join Date: Aug 2001
Location: SW FL
Posts: 242
It should be either the cable... or it is the speedo itself which is better off replaced than fixed, so I hear...
__________________
'86 Guards NA 70K- driving 11yrs
'98 Techno-Violet M3 57K- since 4/04
'55 MiG-15 UTI - Mach.97 -rebuilding
'58 Cessna 175 w/GO-300
'98 Scarab Sprint, 4.3V, 62mph
'92 Guards 968 (my girlfriend's)

Gone...
'82 Camaro Z28 1st car
'84 VW Rabbit Cabrio & GTI
'77 BMW 630 4spd sport bilstiens
'84 POS Cavalier- drove to junk yard
Old 07-28-2004, 06:58 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
daxdog's Avatar
 
Join Date: Jul 2004
Location: Collierville, TN
Posts: 116
Anyone know how tough it is to replace the speedo cable in a 84na? I'm getting ready to place an order for a bunch of parts and I need to know if I should get them to throw the cable in the box or not. I don't want to if I need to get my mechanic to replace it.
__________________
1984 Porsche 944 Silver/Black
Old 08-02-2004, 07:44 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
Chris_924s's Avatar
 
Join Date: Jun 2002
Location: Cincinnati Ohio.
Posts: 499
Garage
Speedo cable is binding, then releasing causing the needle to jump.

If you remove the speedo and spray a graphite lubricant in the cable it will get you by for a while (Mine lasted almost a year of daily driving, YMMV)

Speedo cable replacement is pretty easy, but I've done it a few times. I was apprehensive at first as well. It goes a little like this..

Buy new cable- about 25 bucks.
Remove steering wheel.
Remove speedo.
disconnect speedo from cable and cut the ferrule end off (inside the cabin).
SECURELY Electrical tape the new square (drive) end of the cable to the nub left where the ferrule used to be.
Cut the speedo cable about a foot inside the firewall and snake the new cable thru the firewall.
Jack up car, remove front drivers side wheel.
Remove c clip from speedo cable on hub.
(Optional, lose c-clip spend 25 minutes looking for it)
Feed the cable thru the hole in the back of the hub.
Reinstall c-clip
(Optional, lose c-clip AGAIN spend additional time looking for it)
Remount wheel and torque lugs to 93Ft Lbs.
Reinstall Speedo
Reinstall steering wheel.

Make sure you mark the position of the steering wheel to hub with a white grease pencil. You don't need to remove the steering wheel, but it will take substantially longer and be much more difficult to replace the cable.

It takes me less than an hour- IIRC the first time I did this it was abut a 3 hour deal, but I fixed my odo gear as well.
__________________
TENSION YOUR SOCKS!

88 924S Guards/ Black ~ 10 years as a Daily Driver and STILL SMILING!
87 NA Diamond Blue Metallic ~ Gone
Old 08-02-2004, 08:18 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
jm951's Avatar
 
Join Date: Mar 2004
Location: Winston Salem, NC
Posts: 464
It could be the speedo itself, but IIRC there is a box that the cables go through that determines the time to replace the O2 sensor. That could be a possibility.
__________________
86 951- again on the road, but needing some more TLC
82 931- again among the rolling
"If yer paint aint chipped, you aint passin nobody."
Old 08-02-2004, 08:19 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
Chris_924s's Avatar
 
Join Date: Jun 2002
Location: Cincinnati Ohio.
Posts: 499
Garage
The "earlies" are cable driven by the front hub.
__________________
TENSION YOUR SOCKS!

88 924S Guards/ Black ~ 10 years as a Daily Driver and STILL SMILING!
87 NA Diamond Blue Metallic ~ Gone
Old 08-02-2004, 08:58 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
jm951's Avatar
 
Join Date: Mar 2004
Location: Winston Salem, NC
Posts: 464
Correct, but if they are like the 931 series circa 82, there are two speedo cables. One connects the hub to that O2 thing and the second from the O2 thing to the speedo.
__________________
86 951- again on the road, but needing some more TLC
82 931- again among the rolling
"If yer paint aint chipped, you aint passin nobody."
Old 08-02-2004, 09:28 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
Chris_924s's Avatar
 
Join Date: Jun 2002
Location: Cincinnati Ohio.
Posts: 499
Garage
Yes, the 2 piece VS the 1 piece cable..I forgot about that.

Dax's 84 944 will have the 1 piece cable.
__________________
TENSION YOUR SOCKS!

88 924S Guards/ Black ~ 10 years as a Daily Driver and STILL SMILING!
87 NA Diamond Blue Metallic ~ Gone
Old 08-02-2004, 09:53 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
daxdog's Avatar
 
Join Date: Jul 2004
Location: Collierville, TN
Posts: 116
Re: Re: Crazy Speedo

Quote:
Originally posted by Chris_924s
(Optional, lose c-clip spend 25 minutes looking for it)
Several years ago I was in a printer repair training class. The instructor referred to these clips as Jesus clips because everytime you take one off you say "Jesus, where'd that clip go?"

Thanks for your detailed repair procedure. I will give it a go.


Quote:
Originally posted by FR Wilk
Do you have larger than stock size tires on the front?
No. These are the stock tires that came on the car.
__________________
1984 Porsche 944 Silver/Black
Old 08-02-2004, 11:01 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered User
 
Join Date: Dec 2002
Location: St Paul MN
Posts: 344
Wow, I have an 84 too and just realized my speedo was reading about 10% fast this past week. Time to go see if that lube idea will fix mine too
__________________
'84 944, '05 GTO
Old 08-02-2004, 04:03 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 10:58 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.