Need HELP car sputters really bad!!

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Oct 27, 2008 | 12:42 PM

dtown_racer

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Teching In

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Need HELP car sputters really bad!!

I recently bought a 98 z28 with some bolt ons and a cam. The guy I bought the car from said they had street tuned it using "efi live". The car runs decent at WOT but anything less and it just spits and sputters. Is there anyway to reset the ecu to the stock settings? not sure what to do any help is appreciated.

Oct 27, 2008 | 12:48 PM

conan

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From: Back in the Burg

Have you tried a tune up... Spark plugs, wires, fuel filter, air filter? You will need hp tuner or ls1 edit and a stock tune bin file if you want to reset to stock. depending on the cam it might run worse on the stock tune.

Oct 27, 2008 | 02:34 PM

regency

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From: Alexandria, LA

it needs some O2 sensors. My truck did the same thing. You can test this by unhooking all of the O2's and go drive it. I drove and raced mine for a year before i bought new ones

Oct 28, 2008 | 01:16 PM

2002 SS HUGG

Launching!

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From: Westminster, Md

Spark plugs. If one spark plug or even two plugs are messed up...it is harder to notice at idle, until throttle is given.

Oct 28, 2008 | 07:51 PM

black01_WS6

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From: Fort Myers, FL.

take the negative off for 10 min and put it back on. Sounds like o2's or could even be a clogged MAF- or oil from the air filter on it, or clogged fuel filter.

Oct 28, 2008 | 08:39 PM

GM WORLD CLASS

Staging Lane

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From: DALLAS TX

probably o2 related. a stock reprogram can be done at your local gm dealer in min. they just hook up tech 2 and reprogram the ecm to stock off of gmdealerworld.com

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