1995 Jeep Grand Cherokee Laredo will not start and has no ignition coil spark
August 1, 2009
1995 Jeep Grand Cherokee Laredo (straight 6 cylinder; 4WD)
What is wrong with it? : Will not start. NO spark from ignition coil.
Here is what happened:
About 5 nights ago at 9pm I went out to the garage to drive to the food store in my 1995 Jeep Grand Cherokee Laredo. I cranked it and, to my recollection, the Jeep either noticeably took some seconds longer than usual to start or it failed to start and I cranked it a second time. I am no longer clear on exactly which one of those it was, but my point is there was something noticeably odd about the way my 1995 Jeep Grand Cherokee Laredo STARTED.
The store is right around the corner, not even a 1/4 mile away. I got to the food store and parked my 1995 Jeep Grand Cherokee Laredo and turned it off. I did not leave it running. I probably spent 30 – 45 minutes in the food store.
When I came back out to the Jeep from the food store it STARTED in the usual manner and I drove back home and put the 1995 Jeep Grand Cherokee Laredo in the garage.
The next morning, probably between 9am and 10am, I tried to start the Jeep and discovered that it just cranks, but WILL NOT START.
I felt I was overdue for a tuneup anyway so I went to the parts store and got distributor cap, rotor, plugs and wires. Installed distributor cap and rotor yet 1995 Jeep Grand Cherokee Laredo continued to fail to start in the exact same manner as described above.
Removed distributor cap end of IGNITION COIL wire, stuck a dinner knife in it, and cranked to see if the ignition coil would spark. The ignition coil did not spark.
I kicked myself for telling the parts store guy that I was not going to buy a new ignition coil and, eventually, got back to the parts store and bought a new ignition coil.
Installed the new ignition coil and cranked. The 1995 Jeep Grand Cherokee Laredo continued to fail to start in the exact same manner as described above. Checked the newly installed ignition coil for spark. The ignition coil did not spark.
I switched the relays(asd, fuel pump, a/c) around. Still no start.
Next. I got a really sick butterfly feeling in my stomach and, maybe, lump in my throat…
The computer error codes to the check engine light appear to be 12 and 55(end). Code 12 is something like “Direct battery input to PCM was disconnected within the last 50 Key-on cycles.” I guess the true error codes were erased since I disconnected the battery to install the new parts, etc., long before I knew there was a way to get the car to give me the error codes. Am I right? Were the true error codes erased when I disconnected the battery?
The overdrive on/off switch appears to be giving code 55(end) only.
I have not been getting any problem or check engine lights and I have not been experiencing any issues at all that can account for why my 1995 Jeep Grand Cherokee Laredo will not start. I am completely shocked and surprised that my very clean 1995 Jeep Grand Cherokee Laredo will not start.
note: The temperature was about 75 degrees or so that day and only slightly cooler overnight.
note: I went to the self service car wash and high pressure washed my 1995 Jeep Grand Cherokee Laredo, like I have done every car I ever owned, about 3 or 4 weeks ago. I walked around spraying the high pressure wash UNDERNEATH the Jeep, like I always do, as well. I did not, however, open the hood and wash the engine and I do not believe I ever have since I have owned the Jeep.
What am I doing to fix my Jeep? (I am POSTING this question in the hopes that you guys and gals can tell me what to do to fix my 1995 Jeep Grand Cherokee Laredo.)
Well, I want to replace the “Crankshaft Position Sensor”, but wow is it difficult to get to. There is some type of cable with a silver/gray protective sheath that rubs tightly up against what I believe is the Crankshaft Position Sensor. The cable goes through the firewall of the car and the other end(bottom) of the cable connects to metal rods and various linkages near the center and underneath the car.
I do not see how I can remove the 1995 Jeep Grand Cherokee Laredo Crankshaft Position Sensor bolt from the top side (under the hood) of the car. An autoparts store employee is going to let me borrow some magnetic socket extensions, joints, etc., because I can clearly see the bolt holding the 1995 Jeep Grand Cherokee Laredo Crankshaft Position Sensor in place if I turn my body/head parallel to the car and facing the rear of the car, BUT I can not get my hand up there to attach a socket and turn.
Even if I manage to get the 1995 Jeep Grand Cherokee Laredo Crankshaft Position Sensor bolt out how do I get the new CPS in place and bolt it in since there is no way I can see to get my hand within 14 – 20 inches of where the 1995 Jeep Grand Cherokee Laredo Crankshaft Position Sensor needs to be installed?
The autoparts store employee said I should not use the magnetic socket attachments while installing the new 1995 Jeep Grand Cherokee Laredo Crankshaft Position Sensor because the Crankshaft Position Sensor itself is a magnet and he feels the magnetic socket might damage the new 1995 Jeep Grand Cherokee Laredo Crankshaft Position Sensor. I assume the 1995 Jeep Grand Cherokee Laredo Crankshaft Position Sensor is an ELECTROmagnet so that it only behaves as a magnet when electricity(current) is applied to it, but I really don’t know.
Can anyone point me to, or give me, instructions for replacing the 1995 Jeep Grand Cherokee Laredo Crankshaft Position Sensor? I sure would like to avoid removing any other parts in order to get to the 1995 Jeep Grand Cherokee Laredo Crankshaft Position Sensor if possible.
While underneath the 1995 Jeep Grand Cherokee Laredo I sprayed lithium grease all over the 1 bolt that appears to hold the 1995 Jeep Grand Cherokee Laredo Crankshaft Position Sensor in place.