What can cause an extended crank?
A bad coolant sensor, a bad throttle position sensor (TPS), a bad fuel pump or a plugged fuel filter can all cause a lean condition causing long cranking times. Sometimes the spark is delivered late, weak or not at all.
Why does my Jeep start with a long crank?
But one symptom of eroded away spark plugs is hard starting and longer cranking. There is a residual pressure valve in the fuel system, unfortunately it is usually in the fuel pump. This valve traps pressure in the fuel system when you shut off the engine, for the next restart, so you have full pressure in the fuel system as it starts.
Why is my Jeep Grand Cherokee not starting?
When pushing the start button, all you will do is crank the engine over, without starting the engine. The problem is a faulty fuel pump relay. This relay is being bypassed outside of the center fuse box or relay center from Chrysler motors. This is a national recall for specific jeeps and Dodge Durango’s.
Why does my Jeep start on a cold start?
From what you’ve said, it appears to happen on cold starts. Once it finally starts are there any driveability issues? One thing you could try as a troubleshooting experiment if it has a key type ignition switch along with the button is to turn the ignition on ‘without starting’ wait about 5 to 10 seconds then start.
What causes a car to crank but not start?
One of the biggest issues that causes a vehicle to crank but not start is ignition issues. When there is no spark, the engine will not start. You’ll probably have a misfire related code such as P0300, P0301, etc….. Ignition issues can be caused by many things, including bad spark plugs, bad coil packs, bad plug wires, computer issues, and more. 3.
But one symptom of eroded away spark plugs is hard starting and longer cranking. There is a residual pressure valve in the fuel system, unfortunately it is usually in the fuel pump. This valve traps pressure in the fuel system when you shut off the engine, for the next restart, so you have full pressure in the fuel system as it starts.
What causes a Jeep Grand Cherokee to not start?
Jeep Grand Cherokee Won’t Start Diagnosis. 1 1. Battery Cables. While the battery cables are not necessarily the most likely issue to cause your Grand Cherokee to not start, they are some of the 2 2. Battery Charge. 3 3. Starter. 4 2. Ignition Issues. 5 3. Engine Timing.
One of the biggest issues that causes a vehicle to crank but not start is ignition issues. When there is no spark, the engine will not start. You’ll probably have a misfire related code such as P0300, P0301, etc….. Ignition issues can be caused by many things, including bad spark plugs, bad coil packs, bad plug wires, computer issues, and more. 3.