No fuel pump power during start. - Saab 9000 Bulletin Board - Saabnet.com
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No fuel pump power during start.
Posted by John Jacob [Email] (more from John Jacob) on Sat, 7 Feb 2015 19:04:58
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Having a problem with a '94 Saab 9000CS non-turbo. Problem has been on going for a few months and has been intermittent until today.
The fuel pump is not running during starting. Key turned to "On" the pump does run for the normal few seconds to pressurize the line. I undid the fuel line to the fuel rail. Turning the ignition to "On" the pump runs and there is fuel that comes out of the line. Turning to start (starter motor running) there is no fuel flow.
I did swap the pump relay a month or so ago.
Need some ideas.
Is it likely that this is an ignition switch issue?
Fuel pump relay issue?
Wiring or ground issue?
Connector issue at pump?
Fuel pressure regulator does hold vacuum.
I plan on running 12 volts directly to the pump to get the car home.
Need some ideas. I will start check with a VOM but thought I would ask for some places to start.
Thanks, John
posted by 74.179.23...
Posts in this Thread:
- No fuel pump power during start., John Jacob, Sat, 7 Feb 2015 19:04:58 <-- Viewing This Message
- Final Update, John Jacob, Tue, 31 Mar 2015 15:47:43
- Newest UPDATE, John Jacob, Mon, 2 Mar 2015 12:47:44
- UPDATE, John Jacob, Mon, 23 Feb 2015 14:05:09
- Starter does run. Car has 160,000 miles. nm, John Jacob, Sat, 7 Feb 2015 20:46:49
- Re: No fuel pump power during start., Simon S, Sat, 7 Feb 2015 20:21:26
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