Sorry, this post is not about my hot rod, but my work truck. It's a 1999 Chevy 1500 with the 4.3. It runs great as long as I don't give it more than about 1/4 throttle, then it acts like it is not getting enough fuel, and coughs and sputters while making zero power. Some days, I can give it a bit more throttle than others and it runs a bit stronger, but never quite right.
It is not throwing any codes at all - the computer thinks everything is fine. With the cold weather here in Utah, it has been getting worse and worse over the last few days.
So, my theories are as follows:
1, Throttle position sensor could be bad.
2, Fuel injectors are plugged.
3, Fuel filter is plugged.
4, Fuel pump is dying - but not quite dead yet. (It does whine a bit while running.)
Any ideas?
It is not throwing any codes at all - the computer thinks everything is fine. With the cold weather here in Utah, it has been getting worse and worse over the last few days.
So, my theories are as follows:
1, Throttle position sensor could be bad.
2, Fuel injectors are plugged.
3, Fuel filter is plugged.
4, Fuel pump is dying - but not quite dead yet. (It does whine a bit while running.)
Any ideas?