1995 gmc ''sputtering''

cletus · 03-06-2005, 09:37 PM

I have a GMC 2500 with a 454 and it sometimes almost dies (sputters) when I start to go. I replaced the plugs, wires, distributer cap, rotor button,PCV valve, and fuel filter. After this my problem continued. I then noticed that it was taking a long time to warm up, so I changed the thermostat. It's been only a few days and it hasn't done it. My question is, could the thermostat have caused this sputtering? It looked OK but felt a little weaker than the new one. I know it could cause the truck to be slow warming but I don't feel sure that it could've been the cause of the sputtering. Any help would be appreciated.

chevynut · 03-07-2005, 05:32 AM

the answer to your question is yes,when the engine is cold the ecm. sends a message for more fuel,thus causing more fuel,when not necessarly needed

cletus · 03-07-2005, 10:05 PM

Thanks chevynut. I did not know that.

03-06-2005, 09:37 PM	#1 (permalink)
cletus Junior Member Join Date: Mar 2005 Posts: 3	1995 gmc ''sputtering'' I have a GMC 2500 with a 454 and it sometimes almost dies (sputters) when I start to go. I replaced the plugs, wires, distributer cap, rotor button,PCV valve, and fuel filter. After this my problem continued. I then noticed that it was taking a long time to warm up, so I changed the thermostat. It's been only a few days and it hasn't done it. My question is, could the thermostat have caused this sputtering? It looked OK but felt a little weaker than the new one. I know it could cause the truck to be slow warming but I don't feel sure that it could've been the cause of the sputtering. Any help would be appreciated. Last edited by cletus; 03-06-2005 at 09:40 PM.

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03-07-2005, 05:32 AM	#2 (permalink)
chevynut Full Member Join Date: Feb 2005 Posts: 33	the answer to your question is yes,when the engine is cold the ecm. sends a message for more fuel,thus causing more fuel,when not necessarly needed

03-07-2005, 10:05 PM	#3 (permalink)
cletus Junior Member Join Date: Mar 2005 Posts: 3	Thanks chevynut. I did not know that.