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96 Dodge Ram 1500 V8 5.2L Multiple Cylinder Misfires - Fuel System & Ignition Diagnostics

Model: 96 Dodge Ram 1500 Fault Code: P0300 Posted: 2007-01-05 15:46

My 1996 Dodge Ram 1500 with a 5.2L V8 engine is experiencing multiple cylinder misfires across all eight cylinders. I've already replaced the spark plugs, ignition wires, distributor cap, and rotor. Despite these changes, the truck runs roughly, especially above 45 mph—shaking noticeably until around 55 mph when it stabilizes. The exhaust also sounds unusual, like there's a blockage; I'm wondering if this is related to the misfires. I plan to install new ignition coil packs today and will update once installed. However, I'd appreciate any additional diagnostics or suggestions—especially regarding fuel system components such as fuel pressure, injectors, or the fuel pump. My truck has a history of starting issues, and it recently died after giving it gas. I'm now considering replacing the fuel pump and filter, along with new fuel injectors. Would that resolve the misfire and rough idle? Vehicle details: 1996 Dodge Ram 1500 V8 5.2L, VIN Ronkirby09. Please reach out if you'd like to discuss further or share troubleshooting tips.

Related fault codes
P0300P0301P0302P0303P0304P0305P0306
Comments (4)
Anonymous 2007-01-08 00:12

My truck now won't start—suspect the fuel injectors might be faulty.

Anonymous 2007-01-08 09:21

No coil packs on this model—only a single coil. Check for spark and verify fuel pressure.

Anonymous 2007-01-08 17:25

I figured it out—I replaced the ignition coil. The truck started once but died immediately when I gave it gas. Now I believe either the fuel pump or fuel filter is failing. I'm planning to replace both and install new fuel injectors. Would that fix the misfires and starting issues?

Anonymous 2007-01-08 17:54

You might still have a clogged exhaust converter—common on this model. Try connecting a vacuum gauge, rev the engine in gear with your foot on the brake. If pressure exceeds 1.5 psi, the exhaust is restricted. Also confirm proper fuel pressure; I recently had a similar issue on a Dakota due to a faulty crankshaft position sensor. What condition are your ignition components in?