Weird Fuel Pressure readings

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11-04-2003, 06:44 AM

XXXL Cracker

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Weird Fuel Pressure readings

41 PSI at idle
48 at WOT

Bad guage
Overzealous fuel pump.... I am leaning towards a bad guage, using the Automter electrical.

Anyone have a similar experience or suggestions?

Thanks,

Big Cracker

11-04-2003, 02:52 PM

1MAX2NV

Moderator running more PSI than all the boosted Maximas... combined

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Which fuel pump?? If you have anything beside an OEM, your fuel pressure will be higher than spec. I just installed an AEM universal fuel pressure regulator. That will save me some $$$ on gas and get some power back.

Quote:

Originally Posted by dlicari

41 PSI at idle
48 at WOT

Bad guage
Overzealous fuel pump.... I am leaning towards a bad guage, using the Automter electrical.

Anyone have a similar experience or suggestions?

Thanks,

Big Cracker

11-04-2003, 04:01 PM

Jime

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Just put in a $10 mechanical gauge under the hood to compare.

11-05-2003, 09:49 AM

1MAX2NV

Moderator running more PSI than all the boosted Maximas... combined

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Autometer eletrical fuel pressure sender tends to go bad. Do what Jime said and just install a mechanical one under the hood to double check. I have 3 fuel pressure gauges on the car currently. One eletrical inside the car. Large autometer under the hood and a small one on the adjustable FPR.