98 1500 3.9 magnum intermitent backfire & popping

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bobbyr

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Ram Year
1998
Engine
3.9 magnum
tough one. I am new to the forum and joined cause I need help!
My 98 1500 with 3.9 Magnum starts and runs great till between 1/4 and 1 mile then backfire popping hesitation. If I mash the throttle pops then goes fine for the rest of the trip. I tried disconnecting EGR thinking that carbon canister may have fuel in it. replaced plugs. rerouted coil wire checked all sensor connections. but problem persist. no codes come up
 

dapepper9

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2001
Engine
5.9L V8
EGR ended in 95, reconnect what you pulled.

When was the last time you did plug wires and how are they routed? Any touching?
 
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bobbyr

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My mistake it was the evap solenoid I disconnected and reconnected it had no effect on the condition.
The wires are a couple years old but the cap and rotor are older. the wires are very close at the back bend and do touch but I have checked in dark and see no arcing.
I think I will do caps rotor and wires although from reports I have read others that have had this issue have replaced those parts and found no improvement.
the plugs I changed where pretty worn I am wondering if that could have affected the coil and if that could cause an intermittent backfire or misfire??
I was hoping to find a possible solution before I just start buying new parts.
 

dapepper9

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It can, ohm check the coil. 12-15k ohms between the tower and either one of the pins on the bottom.
 
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bobbyr

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ohm checked at 13.28 smack dab in the middle. next step cap rotor and wires.
will let you know if that works. thanks for the help!
 
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