Short?
Thread Starter
Drifting
Joined: May 2012
Posts: 1,353
Likes: 44
From: Calgary Alberta
Short?
Almost done with the 70 for the summer (work wise) and I have a nagging little issue I'm always forgetting to ask about on here. Sometimes...but not always...when I turn on my headlights, especially high beams, or AC, the car will act like it is being really taken to task to run them. This is not a vacuum issue I'm sure of it...I can raise the headlights without turning on the lamps themselves and it is fine, likewise the wiper door. Think of anything I can check guys?
Thread Starter
Drifting
Joined: May 2012
Posts: 1,353
Likes: 44
From: Calgary Alberta
Thread Starter
Drifting
Joined: May 2012
Posts: 1,353
Likes: 44
From: Calgary Alberta
The RPM drops slightly with the lights, and significantly with the AC unless I set the idle to ~900, then it will produce only a slight drop. I like to leave the car set at 800 at idle (spec is 750), because 900 can cause the occasional run-on. No noises or any weirdness from the AC system, and blows cold.
Race Director
Joined: Jul 2001
Posts: 15,892
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The RPM drops slightly with the lights, and significantly with the AC unless I set the idle to ~900, then it will produce only a slight drop. I like to leave the car set at 800 at idle (spec is 750), because 900 can cause the occasional run-on. No noises or any weirdness from the AC system, and blows cold.
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Melting Slicks
Joined: Jun 2005
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From: Palatine, Peoples Republic of Illinois
St. Jude Donor '09-'10-'11-12-'13-'14-'15-'16-'17-‘18
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Too bad - I could have use that! My '70 has a Vintage Air system but still drops a few RPM when it kicks on. A bit disconcerting when you're idling.
Thread Starter
Drifting
Joined: May 2012
Posts: 1,353
Likes: 44
From: Calgary Alberta
I hear you...mine has the stock air compressor, and blows cold, etc., but at idle will pull the RPM down a few hundred easily...like from 800 to 500 or less...with a 4 speed that's no fun in traffic.
Thread Starter
Drifting
Joined: May 2012
Posts: 1,353
Likes: 44
From: Calgary Alberta
Hi Chris, I still have the stock style points system with the original distributor.
I'm going to check again tonight for any vacuum leaks that could be throwing the idle off a bit, but outside of that I'm at a loss. Idle remains rough with any accessories engaged, but pulls hard in every gear without hesitation.
I'm going to check again tonight for any vacuum leaks that could be throwing the idle off a bit, but outside of that I'm at a loss. Idle remains rough with any accessories engaged, but pulls hard in every gear without hesitation.