4.3 random stumble, surge, dying
February 12th, 2020, 4:23 PM
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4.3 random stumble, surge, dying
My 2001 S-10 4.3 4x4 Has a problem I can't figure out. Randomly, it will begin stumbling, surging, and if at idle (like sitting at traffic light), it may die. It's like the ignition or injection system lost power momentarily. It will usually restart, but it still exhibits those problems. I have also noticed that if I check my gauges at the same time this is happening, they are fluctuating as if cluster power is changing, All the needles will fall off normal positions (temp will instantly drop, oil pressure and fuel level too). If the stumbling recovers, the gauges will too. It will surge during recovery. I have been having this problem for the last couple of years...It's just so random that I can't duplicate it and chase the problem.The truck does have 243K miles, so it has been good to me...I bought it new. About 8-9 years ago, I replaced the intake gaskets due to coolant leaks. I have also replaced the alternator about 12-13 years ago.
Help please.
Help please.
February 12th, 2020, 8:30 PM
#2
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My 2001 S-10 4.3 4x4 Has a problem I can't figure out. Randomly, it will begin stumbling, surging, and if at idle (like sitting at traffic light), it may die. It's like the ignition or injection system lost power momentarily. It will usually restart, but it still exhibits those problems. I have also noticed that if I check my gauges at the same time this is happening, they are fluctuating as if cluster power is changing, All the needles will fall off normal positions (temp will instantly drop, oil pressure and fuel level too). If the stumbling recovers, the gauges will too. It will surge during recovery. I have been having this problem for the last couple of years...It's just so random that I can't duplicate it and chase the problem.The truck does have 243K miles, so it has been good to me...I bought it new. About 8-9 years ago, I replaced the intake gaskets due to coolant leaks. I have also replaced the alternator about 12-13 years ago.
Help please.
Help please.
February 12th, 2020, 10:51 PM
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The battery is about three years old and the engine will crank nice and quick for a good half a minute or more.
February 13th, 2020, 4:10 AM
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I I don't discount that it could have a fuel system issue but pressure is at 60 KOEO and 56 during idle. The truck is on its third replacement fuel pump and they are OE units. That means the original plus three replacements. The current fuel pump is very whiny.
The battery is about three years old and the engine will crank nice and quick for a good half a minute or more.
The battery is about three years old and the engine will crank nice and quick for a good half a minute or more.
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