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Mopar Certified
Mopar Certified, Dodge Technician
Category: Dodge
Satisfied Customers: 11332
Experience:  24 Year Chrysler/Dodge Certified Specialist
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1996 dodge: misfire, cyl. 3 misfire.

Resolved Question:

1996 dodge ram van 2500 3.9 eng. multiple cyl. misfire, cyl. 3 misfire. oxy. sen. mon. inc. Van misses bad when cold but runs much better when hot. Cap,wires and plugs appear good.Where do I go from here,Im new to scanner tool
Submitted: 8 years ago.
Category: Dodge
Expert:  Mopar Certified replied 8 years ago.

The best place to start is with checking the fuel system for proper pressure and volume.


The pressure spec for your vehicle is 49.2 psi ± 5 psi and the volume spec is 1/4 liter in 7 seconds.


If the system isn't providing enough fuel to the engine you end up with misfire codes.


You may also need to remove the fuel rail and check it for contamination......dirt, grit etc.

Mopar Certified and other Dodge Specialists are ready to help you
Customer: replied 8 years ago.

Complete fuel pump ass. was replaced 3 months ago, I ll have to check pressure. the problem does seem to clear up when van warms up.

Expert:  Mopar Certified replied 8 years ago.
Ok, let me know...
Customer: replied 8 years ago.
fuel pressure is 48 psi
Expert:  Mopar Certified replied 8 years ago.

Ok and the volume test?


These tests are best done when the vehicle is acting up.