How do you check spark on a Jeep XJ?
So, to test for spark. Have your Jeep in neutral (or park if it’s an automatic). Be sure the emergency brake is full engaged and/or wheels chocked to prevent it rolling over your toes or worse. Pull the coil wire from the distributor and put an extra spark plug in the end you removed from the distributor.
How to know if your engine has no spark?
First Confirm Your Engine Has No Spark. 1 Disable the fuel system by removing the fuel pump fuse or relay. 2 Insert a spark plug tester into the plug boot and ground it on a piece of metal on the engine. 3 Finally, Have someone crank the engine and watch for spark.
Why does my car not start when I crank the engine?
The crankshaft position (CKP) sensor monitors the position or rotational speed of the crankshaft. If the crankshaft position sensor has failed completely, and isn’t sending a signal to the (ECU) at all, then the computer won’t send any fuel to the injectors. This will leave you unable to start the car.
What causes a car to stall with no spark?
Consequently, An old or failing ignition pickup may cut out signal intermittently, which may cause the engine to stall. The engine may suddenly just shut off, almost as if the key had been turned off. Depending on the nature of the issue, sometimes the vehicle can be restarted and driven.
Why does my Jeep Grand Cherokee not start?
No fire to coil pack.engine cranks but will not start 62 people found this helpful. 1996 Jeep Cherokee 4.0. Cuts off while driving. Losing signal to fire between distributor and computer. When running stops firing and loads up with gas and starts back backfiring exploding the muffler. My jeep has been to 7 different shops.
What was the problem with my 1993 Grand Cherokee?
1993 grand Cherokee 4.0 eng has similar problem. Problem started with failure to start but if I left the key switch on, in a few minutes I cud hear the fuel pump come on and then it wud start. But there was no spark in the ignition til that point.
What to do if your Jeep Grand Cherokee doesn’t fire?
Most folks forget that makin that engine shine means water and solvents can creep in and disconnect the ” bond ” between engine and ECU….check grounding locations between engine block and body. If the engine cranks but, does not fire…think about the many times the ” ignition switch ” is used….1000x’s. Hope this helps.
What’s the code on my 1999 Jeep Grand Cherokee?
Mine is a 1999 grand Cherokee Laredo inline 6, 4×4 automatic. Started misfiring with one code coming up P0351, which is cylinder#1 secondary ignition fault code. I replaced the complete coil pack and same code came up , then several other codes would come up all in relation to cylinder misfires. DO NOT replace you ignition coil pack with Autozone.