92XJLimited
NAXJA Forum User
- Location
- Victoria, Canada
Hi all,
So to give you an idea of my situation I'll give a quick summary.
About a month ago my Jeep severely overheated resulting in me having it towed to my house. The jeep started a couple of days later when I moved it from the street where the tow truck left it, to my driveway. It ran perfectly well before the overheating. However, it didn't run very well (I don't think it was running on all cylinders) when I started it to move it into my driveway. Also the engine sounded like it was cranking faster than normal but it took longer to start. The head was not warped, the gaskets were not cracked.
As of today I have replaced:
Thermostat (old one was pooched, hence overheating)
Heater control valve (broke into pieces when I removed the old one)
cap and rotor (rotor wasn't firmly set in position resulting in bad contact)
Crankshaft position sensor (old one was very magnetized)
As it stands right now, the engine cranks when I turn the key, but it doesn't even sputter a little bit, not even a hint that it's going to turn over. There's plenty of fuel pressure all the way up to the fuel rail, and the new CPS should ensure that the injectors fire properly, so I'm completely stumped as to why it's not going. The fault codes that flash on the dash are 12(flash,pause, flash twice) and 55 (5flashes,pause,5flashes). According the Haynes manual trouble code chart for models '91 and up, there is no listing for "12" and "55" simply indicates that the trouble code sequence is complete. The closest readings to 12 are 11 and 13. 11 states that there's no crank reference signal to computer (hence I replaced the CPS). 13 states that there's no indicated change between "engine off" and "engine on" pressure and that the MAP sensor should be replaced. I've got fuel, I've got plenty of spark. And the new CPS should be telling the injectors the proper times to shoot fuel. So right now I'm all out of ideas. I'm a student and I don't have money to throw at this thing. Hopefully someone else has had the same problem. Please let me know and any help is apprecuiated. Thanks.
So to give you an idea of my situation I'll give a quick summary.
About a month ago my Jeep severely overheated resulting in me having it towed to my house. The jeep started a couple of days later when I moved it from the street where the tow truck left it, to my driveway. It ran perfectly well before the overheating. However, it didn't run very well (I don't think it was running on all cylinders) when I started it to move it into my driveway. Also the engine sounded like it was cranking faster than normal but it took longer to start. The head was not warped, the gaskets were not cracked.
As of today I have replaced:
Thermostat (old one was pooched, hence overheating)
Heater control valve (broke into pieces when I removed the old one)
cap and rotor (rotor wasn't firmly set in position resulting in bad contact)
Crankshaft position sensor (old one was very magnetized)
As it stands right now, the engine cranks when I turn the key, but it doesn't even sputter a little bit, not even a hint that it's going to turn over. There's plenty of fuel pressure all the way up to the fuel rail, and the new CPS should ensure that the injectors fire properly, so I'm completely stumped as to why it's not going. The fault codes that flash on the dash are 12(flash,pause, flash twice) and 55 (5flashes,pause,5flashes). According the Haynes manual trouble code chart for models '91 and up, there is no listing for "12" and "55" simply indicates that the trouble code sequence is complete. The closest readings to 12 are 11 and 13. 11 states that there's no crank reference signal to computer (hence I replaced the CPS). 13 states that there's no indicated change between "engine off" and "engine on" pressure and that the MAP sensor should be replaced. I've got fuel, I've got plenty of spark. And the new CPS should be telling the injectors the proper times to shoot fuel. So right now I'm all out of ideas. I'm a student and I don't have money to throw at this thing. Hopefully someone else has had the same problem. Please let me know and any help is apprecuiated. Thanks.