Replacing speedo on a 1973 Malibu...



Replacing speedo on a 1973 Malibu...

Postby DorianL » March 3rd, 2012, 3:33 pm

Here we go...

Exhaust header burned speedo cable... need to replace that... I tried getting at it from behind under the dash: you can forget that.

Image

A whole bunch of screws holding down the instrument bezel... it comes off easily enough. You need to pop off the window washer knob. The defogger can stay on... but there is a three pin connector behind that needs to be pried off carefully before you remove the bezel. The head lights knob just slides through.

Image

A few screws only hold down the speedo... Yes, that is in KPH.

Image

But RATS!!!! The cable socket is behind this plastic panel. A couple of nuts on studs hold the instrument cluster on there. You also have to unscrew and pull off a little clip that actuates the shifter needle. You can just see the thin silver line on the right of steering column.

Image

!970s "printed circuit" or ribbon cable. You really cannot get at the speedo cable from behind to unlock it so you need to cut the cable, say close to gas pedal, to pull the instrument cluster out.

Image

There's the speedo connector... right in the middle. As I say, I had to cut it from behind to pull the instrument cluster off... I put it back in just to show where it was. The cable comes through a large hole in the firewall (plugged) next to the the gas pedal. You have to remove the gas pedal.

Image

Hmm, I guess KPH was made in Canada. Note the circular tab the hold the speedo cable in place.

Image

I used some silicone tubing + duct tape to pull through the new cable... I selected a cable that was a coupla feet longer so I could route it well clear of my headers.

Image

Humpty-dumpty back together again.

Image
DorianL

User avatar
Moderator
Moderator
 
Posts: 1679
Joined: January 29th, 2009, 11:43 am
Location: Belgium (Europe)

Re: Replacing speedo on a 1973 Malibu...

Postby grumpyvette » March 3rd, 2012, 3:56 pm

don,t forget to lube the new cable before inserting it very generously with moly assembly lube to help durability, I generally coat the inner cable and pump some into the outer sheath, if you forget to do so the needle tends to vibrate on the dash gauge and its slightly noisy in some applications

related info

viewtopic.php?f=33&t=680&p=8579&hilit=speedo#p8579

viewtopic.php?f=87&t=3164&p=8441&hilit=speedo#p8441

viewtopic.php?f=39&t=1500&p=3410&hilit=speedo#p3410

viewtopic.php?f=87&t=1245&p=2664&hilit=speedo#p2664

viewtopic.php?f=39&t=1237&p=2636&hilit=speedo#p2636
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
grumpyvette

User avatar
Site Admin
Site Admin
 
Posts: 14105
Joined: September 14th, 2008, 1:40 pm
Location: florida

Re: Replacing speedo on a 1973 Malibu...

Postby DorianL » March 3rd, 2012, 4:44 pm

Indeed - forgot to mention that I did that!
DorianL

User avatar
Moderator
Moderator
 
Posts: 1679
Joined: January 29th, 2009, 11:43 am
Location: Belgium (Europe)

Re: Replacing speedo on a 1973 Malibu...

Postby Indycars » March 3rd, 2012, 5:35 pm

I always thought you should use graphite for lubrication on a speedometer cable. Any kind of petroleum base lube would get very thick at temperatures below freezing. Considering the length that would be a substantial drag.

My 85 Chevy Caprice had a two piece speedo cable that none of the auto supplies could find in there computer. We had to just look at the pictures in a paper catalog and match it up. It did break about 3 times in 125,000 miles, which seems like a lot to me.
Rick
Too much is just enough!!!

- Check Out My Dart SHP Engine Project: viewtopic.php?f=69&t=3814
- Need a Dynamic Compression Ratio Calculator: viewtopic.php?f=99&t=4458
Indycars

User avatar
Forum Admin
Forum Admin
 
Posts: 4424
Joined: May 25th, 2010, 8:58 am
Location: Yukon, OK

Re: Replacing speedo on a 1973 Malibu...

Postby mathd » March 3rd, 2012, 5:38 pm

I changed my speedometer cable like 1 month ago.

you use the same speedometer cable conector that my camaro do.
Except your is a pita to change OMG.
I dont have to remove gas pedal and cut the speedo cable with mine.
I just remove the dash bezel unplug w/washer cigar lighter and back windows heater(wich is relly easy to do on my model its a matter of seconds), remove the 4 cluster/gauge holding screw and slip my hand behind to unlock that speedo cable and 12 pin connector for that printed circuit, once there everything is already off the dash.... Just have to push the old cable out and the new in(wich was an easy task)

Mine was 2 piece(for cruise control models) and i changed for a 1 piece longer model. It came with moly grease "press bag".
When using the 2 piece on the camaro there is 1 model for the manuel and 1 for the auto transmission model and depending upon the years they are not routed the same on 2nd gen f-body camaro.

I routed mine outside/above the subframe then above the transmission. it do not hit the exhaust on my model and it dont get serious bend.
While it was off why not changing those gauge for a set from the SS chevelle instead of the standard style sliding needle speedometer :P

Oh yes, mine is also in KPH :). How is speed in your contry kph or mph? here its kph anyway so am happy its in kph.
The speedlimit on the highway is 100 KPH (62 mph)max. yes thats slow and everyone go between 110 and 130 kph anyway.

I see the msd knock alert on your picture. whats it fixed to? to the brake release? am thinking of putting mine into the glove box(as strange as it can sounds lol).
Now, one more question hehe.. do you have a stereo, i see none? anyway no problem with having none, i spend 600$ on a alpine and its always OFF when riding.. engine music is soo much better to me.
Mathieu
mathd

User avatar
 
Posts: 1004
Joined: October 15th, 2010, 11:22 am
Location: Qc, Canada

Re: Replacing speedo on a 1973 Malibu...

Postby jteu2002 » March 4th, 2012, 2:08 am

there is a very important object missing in your setup !!!!
jteu2002

 
Posts: 78
Joined: February 25th, 2009, 12:16 am

Re: Replacing speedo on a 1973 Malibu...

Postby DorianL » March 4th, 2012, 2:46 am

jteu2002 wrote:there is a very important object missing in your setup !!!!


Do tell...
DorianL

User avatar
Moderator
Moderator
 
Posts: 1679
Joined: January 29th, 2009, 11:43 am
Location: Belgium (Europe)

Re: Replacing speedo on a 1973 Malibu...

Postby mathd » March 4th, 2012, 8:27 am

DorianL wrote:
jteu2002 wrote:there is a very important object missing in your setup !!!!


Do tell...

tachometer?
Mathieu
mathd

User avatar
 
Posts: 1004
Joined: October 15th, 2010, 11:22 am
Location: Qc, Canada

Re: Replacing speedo on a 1973 Malibu...

Postby jteu2002 » March 4th, 2012, 1:23 pm

a hint it is blue
jteu2002

 
Posts: 78
Joined: February 25th, 2009, 12:16 am

Re: Replacing speedo on a 1973 Malibu...

Postby DorianL » March 4th, 2012, 1:29 pm

It's the small black tube mounted to the steering column. Digital read out.
Image
DorianL

User avatar
Moderator
Moderator
 
Posts: 1679
Joined: January 29th, 2009, 11:43 am
Location: Belgium (Europe)

Re: Replacing speedo on a 1973 Malibu...

Postby DorianL » March 4th, 2012, 1:36 pm

UPDATE:
The speedo works again, but the TCC lockup does not. Might be the solenoid.
Also A/F sensor readings are a bit weird. I suspect a poor ground.

It is KPH over here 120 max, up to 130 tolerated. But some areas you can sneak by going a bit faster.

The MSD Knock sensor is just velcroed under there... nothing special. Next to the brake release lever.

Nope - no stereo. Never cared to add the extra weight. ;-)
DorianL

User avatar
Moderator
Moderator
 
Posts: 1679
Joined: January 29th, 2009, 11:43 am
Location: Belgium (Europe)

Re: Replacing speedo on a 1973 Malibu...

Postby mathd » March 4th, 2012, 1:41 pm

jteu2002 wrote:a hint it is blue

A nice girl with blue eyes? thats all i can think of lol.
Mathieu
mathd

User avatar
 
Posts: 1004
Joined: October 15th, 2010, 11:22 am
Location: Qc, Canada

Re: Replacing speedo on a 1973 Malibu...

Postby DorianL » March 4th, 2012, 5:36 pm

Viagra?
DorianL

User avatar
Moderator
Moderator
 
Posts: 1679
Joined: January 29th, 2009, 11:43 am
Location: Belgium (Europe)

Re: Replacing speedo on a 1973 Malibu...

Postby jteu2002 » March 5th, 2012, 12:34 am

Image
jteu2002

 
Posts: 78
Joined: February 25th, 2009, 12:16 am

Re: Replacing speedo on a 1973 Malibu...

Postby DorianL » March 5th, 2012, 1:03 am

Touché.
DorianL

User avatar
Moderator
Moderator
 
Posts: 1679
Joined: January 29th, 2009, 11:43 am
Location: Belgium (Europe)

Re: Replacing speedo on a 1973 Malibu...

Postby DorianL » March 5th, 2012, 1:10 am

It's 0700 and I'm parked in front of the body shop in Brussels. Some minor rust spots to be mended. But since the combination valve is leaking at rear, I left at 0600 to beat the traffic. 20 miles.

Body shop can mess with this as I wait for new part.

Not sure I mentioned it. The TCC isn't working. I suspect the solenoid.
DorianL

User avatar
Moderator
Moderator
 
Posts: 1679
Joined: January 29th, 2009, 11:43 am
Location: Belgium (Europe)

Next

Return to Interiors/trim/dashes etc.

Who is online

Users browsing this forum: No registered users and 1 guest

cron