G
Guest
·Overheated my XJ, now it won\'t start!!!!!!!!
Ok, well, yesterday I overheated my 87 XJ (with the 4.0) while driving
down the road. As I turned into a parking lot to let it cool off, the engine
died. Well, since it was cooling off, i got a ride home and left it for
about 3 hours. When i got back, i replaced the thermostat and coolant bottle
cap, and started for home. Well, about a mile down the road, i was sitting
at a stoplight when i tried to accelerate from a stop and it died. I cranked
it, and it wouldnt fire up. If I pressed the gas peddle down, it would crank
then stumble and die. It is acting like it did when the vacume line to the
map sensor was disconnected. But the map sensor was connected, and I tested
it and it tested ok. It stumbles when trying to start at full throttle. I
have no clue what the problem is. Its acting like it is running too rich,
too much fuel and not enough air. It puts out lots of nasty smelling black
smoke when it half-stummbles and dies a few times. This was last night.
Today I worked on it some more and these are my new findings: When I
went to start it cold after it sat all night long, it started up fine. But
then, as it warmed up, it got to runing worse. It would stummble and
hesitate if I tryed to rev it a little. It idled ok. Then, i turned it off.
Well, after that it went back to cranking and stumbling like it was flooded
or like if it had vapor lock or something like that, but it only even
stumbles at full thottle. Its still spewing bad smelling gases. Right now,
I am thinking TPS, Coolant temperature sensor, or MAT sensor. WHAT SENSORS
CAN BE DAMAGED BY HIGH HEAT? Could the coil have gone bad? What about the
ignition module?
Erik
PS: The CPS and pick-up coil in the distributor are all new, as well as the
cap, rotor, wires, and plugs. The oxygen sensor is about 6 months old, but i
dont think it's that.
Ok, well, yesterday I overheated my 87 XJ (with the 4.0) while driving
down the road. As I turned into a parking lot to let it cool off, the engine
died. Well, since it was cooling off, i got a ride home and left it for
about 3 hours. When i got back, i replaced the thermostat and coolant bottle
cap, and started for home. Well, about a mile down the road, i was sitting
at a stoplight when i tried to accelerate from a stop and it died. I cranked
it, and it wouldnt fire up. If I pressed the gas peddle down, it would crank
then stumble and die. It is acting like it did when the vacume line to the
map sensor was disconnected. But the map sensor was connected, and I tested
it and it tested ok. It stumbles when trying to start at full throttle. I
have no clue what the problem is. Its acting like it is running too rich,
too much fuel and not enough air. It puts out lots of nasty smelling black
smoke when it half-stummbles and dies a few times. This was last night.
Today I worked on it some more and these are my new findings: When I
went to start it cold after it sat all night long, it started up fine. But
then, as it warmed up, it got to runing worse. It would stummble and
hesitate if I tryed to rev it a little. It idled ok. Then, i turned it off.
Well, after that it went back to cranking and stumbling like it was flooded
or like if it had vapor lock or something like that, but it only even
stumbles at full thottle. Its still spewing bad smelling gases. Right now,
I am thinking TPS, Coolant temperature sensor, or MAT sensor. WHAT SENSORS
CAN BE DAMAGED BY HIGH HEAT? Could the coil have gone bad? What about the
ignition module?
Erik
PS: The CPS and pick-up coil in the distributor are all new, as well as the
cap, rotor, wires, and plugs. The oxygen sensor is about 6 months old, but i
dont think it's that.