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KMoore68 KMoore68 is offline
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Join Date: Jun 2017
Location: Coquitlam, BC
Posts: 275
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Quote:
Originally Posted by al lkosmal View Post
This has been mentioned above, but the 77 CIS system will not turn the fuel pump on unless you are cranking the engine, which results in the air-flow paddle raising, opening switch contacts that then provides power to the fuel pump. If your fuel pump is coming on when your ignition is in the on position, something is likely not wired correctly.
There are two , two pin connectors located in the harness .....one plugs into the air-flow meter and the other plugs into the cold-start valve. They are identical and if the cold start valve connector is plugged into the air-flow switch and vice-versa.........it may result in symptoms like you are experiencing.
The fuel pump would come on with the ignition in the on position (if the engine is cold) and then shut off........so your engine will start and die. When the air-flow paddle in the closed position, i think that with the ignition in the on position, there will be power to the cold start valve , but it will turn it off when the paddle is raised, when cranking..........

so, it's a long shot, but I'd check /verify that those connectors have not inadvertently been switched.

regards,
al
Hi Al,

Thanks for the information and suggestions. Just to clarify a few things.

I've owned the car for about 3 1/2 years now and prior to a week ago, I would start the car as follows:

1. Turn the ignition switch to "On" for approximately 5 seconds. During this time I could hear the fuel pump run and two lights are light up on the dash.
2. After about 5 second, turn the Ignition Switch to "Start" and the engine would turn over and start and the two lights would turn off.

I was told by the Previous Owner, this was the correct starting sequence as step #1 "primes" the fuel pump.

After a drive last week, everything was fine until I drove over a bump and the car died. After pulling the car over to the side of the road, when I tried to restart the car, at step #1, I couldn't hear the fuel pump running at all and the lights would not turn on. I had the car towed home and I've been troubleshooting it since then.

Last night, while trouble shooting, I turned the ignition switch to "On" and still nothing. While the switch was "On" I would press against the back of the switch and then the fuel pump and lights would turn on.

I'm assuming it is the ignition switch and I was going to look to source a replacement from Pelican but now I'm confused by your comments.

Is my starting procedure above not normal?

Thanks,
Old 10-21-2021, 10:12 AM
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