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Old 05-27-2010, 11:09 PM   #1
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Default 02 grandam gt ra power what power

Hello pontiac and gm enthusiasts. Im new here and a slight situation, I bought a low mile ram air car and over the past 4 mo. it has lost more and more power, to the point that getting o n the freeway is a chore, it does not knock, sqeeck, rattle or roll. Plugs are all in fine good burning condition, no water in oil or vise versa, no smoke no steam out tailpipe. Have not done comp test, gauge was stolen when my shop got robbed, im not thinking heads though, maybe fuel pump, filter, mass air or cat converter. It is also strange that if i feather the gas and find just the right spot it will come up with SOME power but not what it should, and when shes stone she runs fairly decent, the warmer she gets the sicker the *****
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Old 05-27-2010, 11:11 PM   #2
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How old are the coils and plug wires? If you get on it does it sputter?
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Old 05-27-2010, 11:20 PM   #3
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How old are the coils and plug wires? If you get on it does it sputter?
by all accounts really they may be original, plugs have yellow dot on top, wires all still have the numbers on them, and kinda sputter more of stumble, but im not here to slip hairs....lol
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Old 05-27-2010, 11:24 PM   #4
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A sputter when you get on it suggests to me a ignition problem, in this case, weak spark. The coils are more then likely tired, and the wires are in bad shape. Test them to find out. But if these are original, they should be replaced.
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Old 05-27-2010, 11:29 PM   #5
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A sputter when you get on it suggests to me a ignition problem, in this case, weak spark. The coils are more then likely tired, and the wires are in bad shape. Test them to find out. But if these are original, they should be replaced.
even just sitting in park and reving it produces almost a revlimiter like situation at about 4500
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Old 05-27-2010, 11:32 PM   #6
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Have you checked your air filter? How about the fuel pressure?
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Old 05-27-2010, 11:41 PM   #7
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Have you checked your air filter? How about the fuel pressure?
have ckecked the filter,it was ali dirty but blew the heck out of it with my airgun, fuel have not checked, really hoping yall would maybe recognise my issue....lol
just as a matter of fact, i also have electronic issues, my dashlights used to blow fuses but now fuse is good but no lights. also radio fried and the whole system to shut down for 45 seconds or so
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Old 05-27-2010, 11:57 PM   #8
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Was your car in a flood or something? Sounds like something is really messed up in the electrical system.
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Old 05-28-2010, 12:10 AM   #9
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not that im aware of...lol...didnt say nothing bout that in the carfax.
but i have seen the light issue on some other forum whose name i shall not mention, but the people there didnt seem to know beans from applesauce, tested from the fusebox to the dashlight dimmer switch all was good.
but i work like 16 hr days and really pull the dash out..lol
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Old 05-28-2010, 07:56 AM   #10
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Sounds like you have corrosion. We've seen a few cars with corroded fuse boxes. Try to take a look at the bottom to see if it'* white or green. Another possibility is the carpet got wet. There are grounds under the carpet.
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