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

rpms drop and bog at 2200 rpm

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Old 02-15-2011, 02:45 PM
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Default rpms drop and bog at 2200 rpm

Just like the title says, I occasionally get a sputter or miss at idle or at any speed. At idle the car will barely recover or stall. While driving it will buck and drop about 500rpms. Also, on occasion my firebird will bog at 2000 rpms while in gear and will not allow me above 2000rpms. This doesn't happen often, but it really sucks when it does. I get an ses light when it happens... Code 36 ObdI, which is an ignition code. I have a new opti, wires, plugs, icm, and coil. I also replaced fuel pump, fuel pressure regulator, the ect sensor, the map harness, and the iac harness, as well as cleaned out the iac and map. Any ideas???
Old 02-15-2011, 03:07 PM
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TPS? lol its about the only one not mentioned. Check the voltage with key in run but car not running and see what it does when the tb blades are opened. Should be something like .63 at close and 4.75 to 5 at full open.
Old 02-15-2011, 07:20 PM
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I'll check out the tps as well as clean out the optical sensor harness and see what happens.




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