JTravis
Member
- Joined
- July 4, 2006
- Messages
- 24
- Reaction score
- 0
- City, State
- Waverly, TN
- Year, Model & Trim Level
- 1991 Explorer 2wd XLT
Hi, all. I've got a mystery that would confound Scooby-doo AND those meddling kids. I've got a 1991 Explorer XLT 2WD 4.0 that had a cracked head but was still running when parked. I got a brand new pair of heads and gasket set from Alabama Cylinder Head, and installed them along with new head bolts and top end gasket set, new o-rings on the injectors top and bottom, a new O2 sensor and new crankshaft position sensor.
Despite all the above, now that it's all back together, it will crank and crank, but it won't start. The fuel pump is pumping up (I can hear it run) and I even went so far as to swap out the coil pack with a good one from my 1994, and still nothing. I took off the intake hose and sprayed a little throttle body cleaner into the manifold past the throttle plate, put the hose back on and cranked, and STILL nothing, so I am thinking no spark (as that would have at least tried to fire even if the injectors were not getting a signal). I know the crank position sensors have a bad rep on these trucks, but that's already been changed. I checked the fuses in the underhood panel, and they are good.
I'm about to the bottom of my bag of magical tricks to make it go... Any ideas of what I might be missing? Short of killing a chicken at midnight and doing a VooDoo dance, I'm fresh out of ideas.
Despite all the above, now that it's all back together, it will crank and crank, but it won't start. The fuel pump is pumping up (I can hear it run) and I even went so far as to swap out the coil pack with a good one from my 1994, and still nothing. I took off the intake hose and sprayed a little throttle body cleaner into the manifold past the throttle plate, put the hose back on and cranked, and STILL nothing, so I am thinking no spark (as that would have at least tried to fire even if the injectors were not getting a signal). I know the crank position sensors have a bad rep on these trucks, but that's already been changed. I checked the fuses in the underhood panel, and they are good.
I'm about to the bottom of my bag of magical tricks to make it go... Any ideas of what I might be missing? Short of killing a chicken at midnight and doing a VooDoo dance, I'm fresh out of ideas.