Author
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Topic: question about trex fuel pump
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1sicklx
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Member # 1018
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posted
should i put a on/off switch on the trex when i intalled it so i save fuel during normal driving, or should i have it on at all times when i am driving... thanks
Posts: 63 | Registered: Mar 2002
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Stimson
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Member # 51
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posted
Its meant to be ran all the time. If you put an on-off switch on it, it will only act as a restriction to your intank pump.
Posts: 2373 | Registered: Jun 2000
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1sicklx
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Member # 1018
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posted
thanks for the imput, i was thinking it would overheat or something thats why i ask...
Posts: 63 | Registered: Mar 2002
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Stimson
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Member # 51
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posted
quote: Originally posted by 1sicklx: thanks for the imput, i was thinking it would overheat or something thats why i ask...
Thats only true for some pumps like the Weldon's.
Posts: 2373 | Registered: Jun 2000
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v8302stangs
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Member # 530
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posted
Yeah I would imagine that your computer would control the fuel anyways, so having more pressure in the line would really have very little effect.
-------------------- 1995 GT 5.0 Mac Off-Road H pipe 00' Cobra R wheels 2 Chamber Flowmasters 3 MTX 10" subs
Posts: 137 | Registered: Nov 2001
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Stimson
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Member # 51
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posted
quote: Originally posted by v8302stangs: Yeah I would imagine that your computer would control the fuel anyways, so having more pressure in the line would really have very little effect.
Now that statement made no sense.
Only '99+ cars have the EEC control the fuel pump variably. Pre '99 cars, the EEC just flicks the fuel pump relay on and off with the iginition switch. Post '99 cars, the EEC monitors the fuel pressure at the rail via a pressure sending unit and accordingly drives the pump.
Posts: 2373 | Registered: Jun 2000
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