What causes a 2003 Chevy Silverado to misfire?
What causes a 2003 Chevy Silverado to misfire?
2003 Silverado, a failing fuel pump sounds like it could be a likely culprit. Although if there is an external fuel filter on it, it’s probably way easier and a lot cheaper to replace first. It’s probably time anyway.
What makes a GM 4.8L misfire engine stall?
P0306: Cylinder #6 Misfire. P0307: Cylinder #7 Misfire. P0308: Cylinder #8 Misfire. Really bad gas mileage. Lack of Power when you accelerate your van, pickup or SUV. Engine may start, run for a few minutes and stall.
Why does my Chevy Silverado have a lean condition?
When the LTFT goes positive it means the computer thinks it needs to add more fuel under the current conditions so it increases the percentage of time the injectors are open. If it were a vacuum leak then raw air would be bypassing the MAF and causing a lean condition but since the idle is ok the MAF itself is a likely cause.
How to troubleshoot a GM Truck misfire?
This isn’t the only symptom that your GM van, pickup or SUV might experience… here are some more that you might see: P0300: Random Cylinder Misfire. P0301: Cylinder #1 Misfire. P0302: Cylinder #2 Misfire. P0303: Cylinder #3 Misfire. P0304: Cylinder #4 Misfire. P0305: Cylinder #5 Misfire. P0306: Cylinder #6 Misfire. P0307: Cylinder #7 Misfire.
2003 Silverado, a failing fuel pump sounds like it could be a likely culprit. Although if there is an external fuel filter on it, it’s probably way easier and a lot cheaper to replace first. It’s probably time anyway.
Why does my GM V8 engine misfire when cold?
Because, GM V8 engines are very prone to a rough idle and engine misfire when cold. The check engine light may also come on, with codes P0300, P0171 and PO174. But, as the engine warms up, the engine misfire or rough idle tends to go away; which seems confusing.
P0306: Cylinder #6 Misfire. P0307: Cylinder #7 Misfire. P0308: Cylinder #8 Misfire. Really bad gas mileage. Lack of Power when you accelerate your van, pickup or SUV. Engine may start, run for a few minutes and stall.
When the LTFT goes positive it means the computer thinks it needs to add more fuel under the current conditions so it increases the percentage of time the injectors are open. If it were a vacuum leak then raw air would be bypassing the MAF and causing a lean condition but since the idle is ok the MAF itself is a likely cause.
