Bdubbz801 Posted May 28 Report Share Posted May 28 Hi sorry to piggyback on your post not sure where to start a new one... I have a 2008 dodge grand caravan 3.8 l. K so first it was showing a issue with the pcm, replaced battery its fine then was leaking coolant pcm noticed a problem in cooling system. Found a Crack in hose, fixed. But prior to finding Crack I thought it was the thermostat possibly so took it off to boil it to test, it was fine - k so now the problem, I took off the spark plug wires from the ignition coil cylinders 2,4, and 6 they were in the way of the thermostat, and me being dumb started it without connecting said wires. Now I have a misfire in cylinder 4, code po304 I have changed the ignition coil, nothing. Would it be the plug or wires as they weren't connected? Or have I done something far worse? x) before changing coil which I figure was fine before I noticed no spark coming from the 4 diode. No noticeable frying of the electrical connector or fuses popped. Any advice? Quote Link to comment Share on other sites More sharing options...
larryl Posted May 28 Report Share Posted May 28 No Journey had a 3.8 drivetrain you need to be in a Caravan forum one would think Quote Link to comment Share on other sites More sharing options...
Bdubbz801 Posted May 28 Author Report Share Posted May 28 Yeah just figured it was a generality of dodge at least common mechanical things Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted May 28 Report Share Posted May 28 2 hours ago, Bdubbz801 said: Hi sorry to piggyback on your post not sure where to start a new one... I have a 2008 dodge grand caravan 3.8 l. K so first it was showing a issue with the pcm, replaced battery its fine then was leaking coolant pcm noticed a problem in cooling system. Found a Crack in hose, fixed. But prior to finding Crack I thought it was the thermostat possibly so took it off to boil it to test, it was fine - k so now the problem, I took off the spark plug wires from the ignition coil cylinders 2,4, and 6 they were in the way of the thermostat, and me being dumb started it without connecting said wires. Now I have a misfire in cylinder 4, code po304 I have changed the ignition coil, nothing. Would it be the plug or wires as they weren't connected? Or have I done something far worse? x) before changing coil which I figure was fine before I noticed no spark coming from the 4 diode. No noticeable frying of the electrical connector or fuses popped. Any advice? I had quite a while ago 3 different 3.8 engined '04 vans. There is an ignition module that the coils mount to{if I remember correctly}, and probably fried a circuit in it by leaving the wires off from the coils, and you're lucky it still runs at all with just a misfire on the ONE cylinder, normally ignition control goes totally away if that module goes bad. Good Luck, and yes you'll get better help on a Caravan/T&C forum than here. Quote Link to comment Share on other sites More sharing options...
Bdubbz801 Posted May 29 Author Report Share Posted May 29 Oh alright yea I'll check that out thanks for the info ! Quote Link to comment Share on other sites More sharing options...
John/Horace Posted May 29 Report Share Posted May 29 Yup a four pin harness plug going to coil. Not a regular cop set up for sure. Only $40 so much cheaper set up mmm. larryl 1 Quote Link to comment Share on other sites More sharing options...
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