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#1
04-21-2010, 08:58 PM
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2002 grand prix gtp fuel pressure
where should the prssure be at. i tested iut the first time and it said 46. then i tested it again and it kept bouncing back and forth from 44 to 46
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#2
04-22-2010, 08:04 AM
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Re: 2002 grand prix gtp fuel pressure
is this key on engine off, or while the engine is running?
__________________
 Still waiting for the "good old days" I'll get to bore my future grandchildren with!
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#3
04-22-2010, 10:12 AM
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Re: 2002 grand prix gtp fuel pressure
its while the engine is running
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#5
04-23-2010, 12:30 AM
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Re: 2002 grand prix gtp fuel pressure
What does the fuel pressure read at fuel pump prime? That is with ignition to ON only without engine running. It should be in a range of 48-55 psi.
__________________
'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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#6
04-28-2010, 03:20 PM
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Re: 2002 grand prix gtp fuel pressure
when i hit a hill with the pedal down i have no problem. but when i am on a hill maintaining speed it kinda surges, like a light tugging. but if u give it gas its fine. any suggestions?
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#8
04-28-2010, 06:28 PM
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Re: 2002 grand prix gtp fuel pressure
And if new, what brand?
Also what is the condition of the MAF air straightener screen in your throttle body?
__________________
-2000 Grand Prix GTP 170,000mi (daily driver) -2000 Olds Alero 100,000mi (soon to be DD with gas at $3.45/gal) -1997 Chev K1500 4x4 115,000mi (Natalie's truck [nans_grandprix]) AF "2.0" Community Guidelines Conservative Victory 2012!!! "I'll Keep my Guns, Freedom, and Money. You can Keep the Change!" ----->>>>> Did You Know? <<<<<-----
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#9
04-29-2010, 12:27 PM
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Re: 2002 grand prix gtp fuel pressure
the plugs are two weeks old and are the ngk iridium plugs. i had the same prob before changing the plugs. the wires are about four months old. they are ac delco
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#10
04-29-2010, 12:27 PM
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Re: 2002 grand prix gtp fuel pressure
the screen also seems fine
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