LT1-LT4 Modifications 1993-97 Gen II Small Block V8

lt1 rough idle will not rev

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Old 06-16-2012, 10:24 AM
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Default lt1 rough idle will not rev

Lt1 i finally got running, the idle is real rough and fluctuates from 600-890 rpms, car is tuned for 825 though. The car revs to maybe about 1200 rpms with map unplugged 1500 rpm sometimes. I noticed a plug wire was touching a header so after the car cools off imma move it and see if theres any internal damage. Also gonna probably order otvc kit. Tryed with MAF unplugged and same thing, my spark advance verys from -20 some to 30 some, its tuned for 30 degrees of timing i believe though. No long term or short term fuel readings though also thinking could possibly be 02 sensors

car mods are
com camp xfi280 230/236 113lsa
1.6 rr
36lb/hr inj
le2 heads/intake
pacesetter long tubes no cats
no air or egr a/c delete
o2 sensors are new
fuel pump, fuel filter new
plugs were fouled yesterday cleaned them up car starts right up now

any ideas?
Old 06-16-2012, 11:35 AM
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are the valves adjusted properly?could be something simple like loose grounds.......
Old 06-16-2012, 12:12 PM
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just adjusted the valves yesterday there good car would rev before but wouldn't idle only thing i changed was the throttle body set screw which it no idles but doesn't rev, pulled off plug 6 wire and the boot was burnt and part of the wire rubber was burnt believe it could be salvagable for a little bit untill i get new wires
Old 06-16-2012, 09:16 PM
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ttt.... pulled the tune off the pcm have it if anyone wants to look at it


it was done by mad tuner which i've heard great things about but you never know



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