Re: Fuel Pump or not - Saab 900 Bulletin Board - Saabnet.com
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Re: Fuel Pump or not
Posted by Name Left Blank (more from Name Left Blank) on Sat, 29 Apr 2017 12:27:30
In Reply to: Re: Fuel Pump or not, Landjet [Profile/Gallery]
, Thu, 27 Apr 2017 20:22:51
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Hi again,
So, already had done the pin27-30 jumper. (see first post)
Following Bentley, also already did the following, "Testing Fuel Pump Circuit" (and confirmed today):
1. No power with jumper between pins 30 and 87B of fuel pump relay
2. Power is present on Pin 86 of fuel pump relay when ignition is on.
3. Checking voltage between relay pins 85 and 86, I have power when ignition is on, but no power when cranking, suggesting a ground fault from the LH unit per Bentley.
4. Relay is functional as it will switches when plugged in under the "power on" condition between pins 85-86.
Regarding the question of running with the jumper condition (1.) since the pump is running, and the fuel pump relay is effectively out of the circuit with this hazard fuse jumper, shouldn't I get a start (barring general failure of the LH control)?
posted by 71.237.197...
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