Quote:
Originally Posted by oilonly
There is also a relay under the seat,probably not be the issue just throwing it out there.
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Just for the genral wisdom pool, that particular relay under the seat will either (a) allow the car to run normally, or (b) not run at all. Nothing in between...BTDT. It's a $340 piece of crap that an industrious person should wire around.
I'm with the present diagnosis of one fuel pump doing the funky chicken. Besides relays, do check the fuse that feeds both as well as the wiring at the fuse/relay harness for cleanliness and torque on the screws.
Are you running with the O2 sensor or is it bypassed?
As DSPTurtle has recommended, do pull the connector behind the metering plate to force the pumps to run without the engine running....it'll help with the diagnosis. I pulled that connection a long time ago whilst troublshooting something or other (I think it ended up being the relay under the seat) and have never reconnected it. I kinda like hearing the pumps run when I turn on the key....gives me confidence that she'll start.