| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
|
|
#1
10-11-2013, 06:43 AM
|
|||
|
|||
I would guess its your speedo as well.
|
|
#2
10-11-2013, 08:06 AM
|
||||
|
||||
|
Quote:
__________________
1971 Pontiac GT-37 Car is a junk yard dog and maybe one day will be restored. 
|
|
#3
10-11-2013, 11:15 AM
|
||||
|
||||
|
Is it accurate up to 20 or does it show 20 even though you are doing 40? I would also inspect the plastic cable drive gear in the tranny--they are cheap and easy to inspect/replace if needed.
__________________
Knowledge is knowing a tomato is a fruit; wisdom is not putting it in your fruit salad. |
|
#4
10-11-2013, 04:42 PM
|
||||
|
||||
|
I would start by checking the speedo cable and gear in the transmission.
I recently changed the speedo gear in my M20 to correct for a new ring/pinion set and saw something similar, where the speedo needle would stay at a certain level and not move. The odometer worked fine. The new speedo gear came in a two pack, so I installed the other one and it works fine. What I found is the speedo cable end didn't seat fully into the trans gear. I'm thinking it forced the cable end to push in too far at the speedometer side of the cable.
__________________
1970 GTO-vert, 461, eheads, stump puller, m20, 3.42 
|
| Reply |
| Thread Tools | |
| Display Modes | |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Hybrid Mode
