car dies at WOT
#1
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i have a 98 z28 and it has been cutting out and dying when i get in it all the way @ around 62-6500 rpm. put the car in neutral and it fires right back up with no problems also runs fine as long as i dont get in the gas pedal. anyone have any suggestions thanks.
#2
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What mods have you done? Sounds like you might be running lean.
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What injectors are you running (and what duty cycle % are you running them at?) what size cam, how much estimated horsepower?
If I had to take a guess, I'd say it could possibly be dirty injectors or a dying fuel pump or clogged fuel system. But I am just completely guessing.
But we need alot more details to really be any help.
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im not real mechanic savvy but when i get home this evening ill give you all the specs i have on the car it put up in a file at the house. the horsepower dyno was 385 done when they tuned the car at texas speed that was about 3 years ago and it just recently started acting up a few weeks ago. it runs fine as long as i stay out of the gas
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But yeah I guess it is safer to just replace it now regardless.
Last edited by Ironembraced; 10-22-2011 at 10:42 PM.
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if you're gonna go the shotgun route, i'd do a fuel filter b4 i did a fuel pump. a dirty filter may very well manifest itself like this, and its the cheapest thing you can do. i'd probably pull a plug or two if you can do it right after it happens. the plugs can tell all...
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I'm not saying blindly replace the fuel pump, obviously a fuel pressure test is in order but sure sounds like it.