Alright I've replaced everything I can think of on this 95 Z26..... When its cool outside car runs great, but when it's warm out it runs like crap!? Sputters at all speeds and occasionally dies when coming to a stop. On another note even when running like crap if you put your foot down its a rocket? Any help I'm goin nuts!!!!
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What have u replaced? Any codes?Lifting my front wheels, one jack at a time. -
No codes, Have replaced Intake Gaskets, Plenium gaskets, valve cover gaskets, timing cover gasket, Main seal, plugs, wires, thermostat, TPS, IAC, Map, Coil packs, Any Ideas?Comment
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Are you saying it runs good when the engine is cool, bad warm? Or ambient temp?
If the car runs bad when warmed up it could be a leak in the exhaust upstream the o2 sensor, the o2 sensor itself is dead or one of the wires is shorting/cut.
Air, Spark, Fuel & Compression.....the 4 main things to check.
Since it runs strong at wot, I would check for exhaust/intake leaks. Minor leaks cause the most disturbance at idle and less under load.Last edited by TGP37; 08-21-2012, 09:20 PM.1996 Grand Prix | 3100v6 L82 | T04E-50 Turbo | Getrag 282 w/ EP LSD | SPEC-3 ClutchComment
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Do a vacuum leak test. Probably have a cracked plenum. Could be MAF sensor too.Lifting my front wheels, one jack at a time.Comment
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Soap and water spray all over the ignition, check wires, coils. Tps could be faulty, check fuel pressure, pump could be failing when it gets warm.Comment
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