Forum: 68-69 GTO Tempest & LeMans TECH
04-06-2024, 12:05 PM
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Replies: 1
Views: 457
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Forum: 64-65 GTO Tempest & LeMans TECH
03-29-2024, 12:14 PM
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Replies: 3
Views: 534
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Forum: 64-65 GTO Tempest & LeMans TECH
03-28-2024, 10:56 PM
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Replies: 3
Views: 534
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Forum: 61-63 Tempest & LeMans TECH
03-23-2024, 12:25 PM
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Replies: 1
Views: 888
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Forum: 66-67 GTO Tempest & LeMans TECH
03-18-2024, 11:17 PM
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Replies: 7
Views: 569
Temperature gauge, the 3/4 line?
The temperature gauge: the spacing on the lines is non-linear. I am sure GM did that on purpose. Just FYI) The fuel and oil pressure gauges both read linear by design; +-2%.
My tests tell me...
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Forum: 66-67 GTO Tempest & LeMans TECH
03-08-2024, 01:29 PM
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Replies: 8
Views: 599
67 ground bracket
Hi Larry, your post #4 photo 1) your blue arrow shows the right slot for the one threaded bolt.
Photo 2) something does not look right to me; it's hard for me to tell judging by the position...
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Forum: 66-67 GTO Tempest & LeMans TECH
03-07-2024, 12:52 PM
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Replies: 8
Views: 599
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Forum: Electrical Tech
03-06-2024, 01:13 PM
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Replies: 6
Views: 644
wiper motor stuck
One problem that I used to see often at work (& this was in the 1980s) was that the GM wiper motor's armature would stick. Two things can make it do that: 1) was a dry oilite bushing on one or...
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Forum: Electrical Tech
03-05-2024, 06:58 PM
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Replies: 6
Views: 644
One thing about any of those 1960s, 1970s era...
One thing about any of those 1960s, 1970s era wiper motors is that they are noisy. So much so that GM decided to mount the motor to the firewall using 3 rubber bushings. There is a need for the...
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Forum: 66-67 GTO Tempest & LeMans TECH
02-10-2024, 01:26 PM
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Replies: 6
Views: 504
The wiper switch ground strap
Here is a photo of a 66 Lemans dash bezel, the ground strap for the headlamp switch + the wiper/washer switch is highlighted in blue.
The '67 GTO/Lemans ground strap has one tiny bend in it that...
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Forum: 70-72 GTO Tempest & LeMans TECH
02-04-2024, 12:19 PM
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Replies: 6
Views: 555
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Forum: 70-72 GTO Tempest & LeMans TECH
01-17-2024, 06:38 PM
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Replies: 15
Views: 889
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Forum: 70-72 GTO Tempest & LeMans TECH
01-17-2024, 02:46 PM
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Replies: 15
Views: 889
Engine metal temperature sensor
That reminds me of a sensor that Ive seen before on other GM cars. It senses metal temperature. It may have something to do with a delay for the blower motor if the temperatures are too cold, The...
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Forum: 66-67 GTO Tempest & LeMans TECH
11-15-2023, 02:25 PM
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Replies: 8
Views: 674
The photo in post #6 does not looks like it is...
The photo in post #6 does not looks like it is from any shop manual. It looks like the paper directions for an add-on accessory back up lamp kit.
In 64 and 65 on the A body series cars back up...
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Forum: 66-67 GTO Tempest & LeMans TECH
11-14-2023, 06:39 PM
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Replies: 8
Views: 674
The other plug-in should have 2 wires in it. To...
The other plug-in should have 2 wires in it. To me it looks like one end of the extension section of harness that goes down to the switch on the side of the transmission. That switch would be on a...
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Forum: 68-69 GTO Tempest & LeMans TECH
11-11-2023, 03:13 PM
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Replies: 13
Views: 782
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Forum: 64-65 GTO Tempest & LeMans TECH
11-07-2023, 01:26 PM
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Replies: 9
Views: 794
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Forum: 64-65 GTO Tempest & LeMans TECH
11-06-2023, 01:51 PM
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Replies: 9
Views: 794
Small world, I am almost positive that brown...
Small world, I am almost positive that brown wire(s) should be the accessory port plug-in for something that would require 12 volts "+" key on.
It either feeds directly off of the back of the...
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Forum: 64-65 GTO Tempest & LeMans TECH
11-04-2023, 07:32 PM
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Replies: 9
Views: 794
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Forum: 70-73 Firebird & TA TECH
10-31-2023, 05:32 PM
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Replies: 7
Views: 1,072
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Forum: Electrical Tech
10-24-2023, 04:12 PM
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Replies: 11
Views: 1,077
Rally gauge, temperature gauge inop.
After 50 + years those old style GM gauges in the #4 pod (65,66,67) all have a 95 to 98% failure rate. Adding to the problem many of the modern aftermarket replacement senders that are commonly...
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Forum: 68-69 GTO Tempest & LeMans TECH
10-14-2023, 03:26 PM
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Replies: 11
Views: 3,803
green wire to remove from this plug-in
On that green wire I have seen it made with the "twin" on the plug-in at the back of the gauge cluster so there is just one lone green wire that goes over to the ignition switch.
This would most...
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Forum: Interior TECH
10-06-2023, 02:14 PM
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Replies: 11
Views: 1,018
Speedometer calibration
The calibration is set by the spring tension of the return spring, and the magnet strength. At the very minimum I make use of 3 tools to check that magnet and adjust; more magnetic pull or less, as...
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Forum: Interior TECH
10-05-2023, 03:31 PM
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Replies: 11
Views: 1,018
The sole purpose for that plastic strip and the...
The sole purpose for that plastic strip and the notch in the guide is to alert a possible buyer of a Used GM car, perhaps some years into the future that someone, at a past point in time had tried to...
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Forum: 67-69 Firebird TECH
08-31-2023, 02:33 PM
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Replies: 11
Views: 478
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