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brownjeff
brownjeff, ASE Certified Technician
Category: Dodge
Satisfied Customers: 13885
Experience:  17 years experience, ASE certified, dealership certified, Service Manager for 15 years,
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93 dodge ram 150, 5.2L... Wont start, no previous troubles,

Resolved Question:

93 dodge ram 150, 5.2L...
Won't start, no previous troubles, no warning.
current to ignition coil with key on for 3-4 sec. then stops..
current resumes to coil for 2-3 sec. when cranking, then stops...
Have replaced: dist. cap and rotor, distributor pickup sensor, ASD relay, fuel pump relay, brain box (ECU), and coil...
Relays still energize, then quit (shut down) after a few seconds of key on...
What next (have thrown a lot of $$ at this)...should have hired a good engine electrical guy to troubleshoot it
Submitted: 4 years ago.
Category: Dodge
Expert:  brownjeff replied 4 years ago.

Do you get and codes from the computer?

 

Has the crank sensor been replaced?

Customer: replied 4 years ago.
I thought yopu might ask that...No, it looks almost impossible for me to get it from the engine compartment. I'm 63 and not as agile or ambitious as I used to be! What's involved there?
Expert:  brownjeff replied 4 years ago.

Here is the information on the crank sensor and it is the most likely cause of the problem based on the description and what has been done.

 

graphic

 

EMOVAL

  1. Disconnect negative battery cable.
  2. Remove spark plug cable loom at right rear valve cover.
  3. Disconnect two hoses at EGR valve. Note position of hoses before disconnecting.
  4. Disconnect electrical connector and hoses at EGR transducer. Note position of hoses before disconnecting. NOTE: DO NOT pull on sensor electrical lead.
  5. Remove 2 EGR valve mounting bolts and remove valve.
  6. Disconnect electrical connector at oil pressure sending unit.

graphic

 

  1. Using special tool # XXXXX or equivalent remove oil pressure sending unit.
  2. Loosen EGR tube mounting nut at the intake manifold. Remove EGR tube mounting bolts at the exhaust manifold and remove EGR tube.
  3. Disconnect crankshaft position sensor electrical connector.
  4. Remove crankshaft position sensor mounting bolts and remove sensor.

INSTALLATION

  1. Position crankshaft position sensor, and install mounting bolts. Torque mounting bolts to 8 Nm (70 in-lbs) .
  2. Connect crankshaft position sensor electrical connector.
  3. Using new gaskets, install EGR tube and torque bolts to 23 Nm (204 in-lbs) .
  4. Using special tool # XXXXX or equivalent install oil pressure sending unit. Coat threads of sending unit with thread sealer prior to installation. Tighten to 14 Nm (130 in. lbs.) .
  5. Connect oil pressure sending unit electrical connector.
  6. Using a new gasket, install EGR valve. Torque mounting bolts to 23 Nm (204 in-lbs) .
  7. Connect electrical connector and hoses at EGR transducer.
  8. Connect two hoses at EGR valve.
  9. Install spark plug cable loom at right rear valve cover.
  10. Install the air cleaner housing and plastic air intake tube.
  11. Connect negative battery cable.


Edited by brownjeff on 1/28/2010 at 6:52 PM EST
Expert:  brownjeff replied 4 years ago.
I had to add information I think you have it all now
brownjeff, ASE Certified Technician
Category: Dodge
Satisfied Customers: 13885
Experience: 17 years experience, ASE certified, dealership certified, Service Manager for 15 years,
brownjeff and 7 other Dodge Specialists are ready to help you

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