What would cause a Jeep to misfire?
Worn and old spark plug wires are common causes of random misfires. Replace spark plugs and wires if needed and recheck for misfires. If you have determined that your ignition system is operating correctly, there may be a problem within your fuel system that is causing the random misfires. Check fuel pressure.
What happens if you misfire a Jeep Grand Cherokee?
The P0306 trouble code will trigger the Grand Cherokee’s service engine soon light. The vehicle itself may begin to run rough. It depends on how serious the misfire is. The vehicle may produce excess vibration, especially at lower RPM. Fuel mileage may suffer.
Why did my left side cylinder on my Jeep misfire?
I just had my left side cylinder head replaced at dealership after a year and a half of them telling me the symptoms (rough run with loss of power intermittently, usually on hot days) was caused by dirt in the cylinder . !! So they replaced it under recall at 138000 and 9 years believe it or not.
Is there a problem with the Jeep Grand Cherokee p0306?
P0306 is certainly a cause for concern, and should be considered a threat to the drivability your Grand Cherokee. The nice thing about P0306 is that it’s a cylinder specific trouble code, which makes diagnosing the problems much more simple than P0300, which means that the cylinders are randomly misfiring.
Where is cylinder 6 on a Jeep Grand Cherokee?
An important thing to understand when finding the location of Cylinder 6 is that it’s going to be the sixth cylinder in the firing order. It won’t be the sixth cylinder that you might see when looking at the engine. The P0306 trouble code will trigger the Grand Cherokee’s service engine soon light. The vehicle itself may begin to run rough.
What happens if you misfire the cylinder 6 on a Grand Cherokee?
It also can cost money to ignore it, since driving with a misfire can damage the Grand Cherokee’s catalytic converter. The engine is also not firing all of the fuel, so raw fuel is also passing through Cylinder 6 into the exhaust. Mileage may suffer as well when your Grand Cherokee has P0306 as well.
What causes the p0306 code on a Jeep Grand Cherokee?
There are quite a few things that can cause the P0306 trouble code to trigger the Jeep Grand Cherokee. Here are the most common problems that may cause it. They are presented somewhat in order from most to least likely to be causing the code: Bad Spark Plugs – Spark plugs are one of the most common causes of P0306.
Why does my Jeep stall when I start the engine?
If it starts, the fuel pump is the problem. If not, the engine should be checked for spark. It could be a sensor or computer-related problem. To be absolutely sure, raise and support the back of the Jeep on jack stands, unless the height allows you to crawl under the back without raising it.
What is the OBDII code on a Jeep Grand Cherokee?
Fixing P0306 should be considered a high priority. Unlike a lot of the OBDII codes, this code has to do directly with engine combustion. It also can cost money to ignore it, since driving with a misfire can damage the Grand Cherokee’s catalytic converter.