DodgeBruhBoy Posted November 16 Report Share Posted November 16 Hey whats up everyone, I'm having a few issues and hoping someone can guide me on what to do next, I turned on the car last week and the engine vibrated for like 30 seconds and then a check engine light came on. It's a 2019 Dodge Journey SE 4cyl 2.4 I got 3 codes. -P0302 CNF MD00 Cylinder 2 Misfire detected -P0302 PND M0D00 Cylinder 2 Misfire detected -P0302 PRM M0D00 Cylinder 2 Misfire detected So I took it to my local mechanic and we replaced all 4 spark plugs, 2 were really bad. But a few days later the car started overheating after 30 mins of driving. I checked the radiator fan, and it comes on when the temperature is reached (approx 200-220), no smoking or etc. My dad and I also inspected the hoses for leaks, tears, all clamps and connections....no issue. Any ideas on what this could be or what we should check for next? Quote Link to comment Share on other sites More sharing options...
DodgeBruhBoy Posted November 16 Author Report Share Posted November 16 Forgot to mention...approx 74K miles, and no issues with the vehicle ever. Quote Link to comment Share on other sites More sharing options...
2late4u Posted November 17 Report Share Posted November 17 your plugs should be changed every 30 k ,iles also only use OEM plugs they are cheap and easy to replace as far as the overheating exactly what happened how hot did it get? did you lose any coolant? probally you just need to replace the thermostat unit on your journey I believe there are 2 of them in the plastic unit as I have the 3.6 and it is a different type that is used instead of the 2.4 only use Mopar coolant when adding to your cooling system...good luck Quote Link to comment Share on other sites More sharing options...
DodgeBruhBoy Posted Sunday at 02:27 PM Author Report Share Posted Sunday at 02:27 PM 13 hours ago, 2late4u said: your plugs should be changed every 30 k ,iles also only use OEM plugs they are cheap and easy to replace as far as the overheating exactly what happened how hot did it get? did you lose any coolant? probally you just need to replace the thermostat unit on your journey I believe there are 2 of them in the plastic unit as I have the 3.6 and it is a different type that is used instead of the 2.4 only use Mopar coolant when adding to your cooling system...good luck We did use the OEM spark plugs (copper), as for how it happened it just popped up. We were just driving a few days later and the overheating sound and dashboard light came on. I pulled over and waited 20 minutes and drove it home. As soon as I got on to the block, the over heating light came on again. The car runs and drives fine with no issue, but as soon as it gets to 25-30 mins.....over heats. But just to clarify there is no leaks, smoke, loose connections or etc. Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted Sunday at 08:59 PM Report Share Posted Sunday at 08:59 PM I'm not sure which size engine is in your car. IF a 4 cyl, then a possible stuck shut thermostat{it has 2}. BUT I also suspect you may have a blown head gasket. Quote Link to comment Share on other sites More sharing options...
Dean H Posted Sunday at 11:59 PM Report Share Posted Sunday at 11:59 PM 2016 DJ, Code definition 2.4L engine. P0302-CYLINDER 2 MISFIRE When Monitored and Set Conditions. When Monitored: This diagnostic runs continuously when the following conditions are met: • The engine is running. • The adaptive numerator has been successfully updated. Set Conditions: • The Powertrain Control Module (PCM) detects that the variation in crankshaft speed between each cylinder exceeds a calibrated value, based on engine rpm and load. The Powertrain Control Module (PCM) detects that the variation in crankshaft speed between each cylinder exceeds a calibrated value, based on engine rpm and load Default Actions: • The MIL light will illuminate. POSSIBLE CAUSES FUEL DELIVERY SYSTEM IGNITION COIL, WIRING, OR CONNECTORS ECT SENSOR, WIRING, OR CONNECTORS MAP SENSOR, WIRING, OR CONNECTORS 02 SENSOR, WIRING, OR CONNECTORS ENGINE MECHANICAL SYSTEM POWERTRAIN CONTROL MODULE (PCM) 2. DIAGNOSTIC INSPECTION NOTE: Anything that affects the speed of the crankshaft can cause this DTC to set. NOTE: When a misfire is detected, the PCM will shut down the injector control circuit for the misfiring cylinder. NOTE: Misfire may occur and may not be caused by component failure. Any of the following conditions can cause a misfire: Worn serpentine belt. Misalignment or binding water pump, P/S pump or A/C compressor pulleys. Improper CKP, CMP, MAP, or TPS Sensor mounting. Poor connector/terminal to component connection for CKP sensor, CMP sensor, MAP sensor, TPS sensor, fuel injector, ignition coil, etc. Corroded PCM power or ground circuits. Vacuum leaks. Restriction in the air induction or exhaust system. Internal engine component malfunction. Moisture on ignition system components. Insufficient fuel. Low quality fuel. Manual transmission bog. Towing overload. Quote Link to comment Share on other sites More sharing options...
DodgeBruhBoy Posted Monday at 07:20 PM Author Report Share Posted Monday at 07:20 PM (edited) 22 hours ago, 5rebel9 said: I'm not sure which size engine is in your car. IF a 4 cyl, then a possible stuck shut thermostat{it has 2}. BUT I also suspect you may have a blown head gasket. It's the 4cylinder 2.4L model, and I'm REALLY hoping its not a blown head gasket. Any signs I should look for if its a blown head gasket? Edited Monday at 07:25 PM by DodgeBruhBoy Quote Link to comment Share on other sites More sharing options...
DodgeBruhBoy Posted Monday at 07:27 PM Author Report Share Posted Monday at 07:27 PM 19 hours ago, Dean H said: 2016 DJ, Code definition 2.4L engine. P0302-CYLINDER 2 MISFIRE When Monitored and Set Conditions. When Monitored: This diagnostic runs continuously when the following conditions are met: • The engine is running. • The adaptive numerator has been successfully updated. Set Conditions: • The Powertrain Control Module (PCM) detects that the variation in crankshaft speed between each cylinder exceeds a calibrated value, based on engine rpm and load. The Powertrain Control Module (PCM) detects that the variation in crankshaft speed between each cylinder exceeds a calibrated value, based on engine rpm and load Default Actions: • The MIL light will illuminate. POSSIBLE CAUSES FUEL DELIVERY SYSTEM IGNITION COIL, WIRING, OR CONNECTORS ECT SENSOR, WIRING, OR CONNECTORS MAP SENSOR, WIRING, OR CONNECTORS 02 SENSOR, WIRING, OR CONNECTORS ENGINE MECHANICAL SYSTEM POWERTRAIN CONTROL MODULE (PCM) 2. DIAGNOSTIC INSPECTION NOTE: Anything that affects the speed of the crankshaft can cause this DTC to set. NOTE: When a misfire is detected, the PCM will shut down the injector control circuit for the misfiring cylinder. NOTE: Misfire may occur and may not be caused by component failure. Any of the following conditions can cause a misfire: Worn serpentine belt. Misalignment or binding water pump, P/S pump or A/C compressor pulleys. Improper CKP, CMP, MAP, or TPS Sensor mounting. Poor connector/terminal to component connection for CKP sensor, CMP sensor, MAP sensor, TPS sensor, fuel injector, ignition coil, etc. Corroded PCM power or ground circuits. Vacuum leaks. Restriction in the air induction or exhaust system. Internal engine component malfunction. Moisture on ignition system components. Insufficient fuel. Low quality fuel. Manual transmission bog. Towing overload. Thank you for sharing, I appreciate that. I'll review everything and report the results soon. Dean H 1 Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted Monday at 08:58 PM Report Share Posted Monday at 08:58 PM 1 hour ago, DodgeBruhBoy said: It's the 4cylinder 2.4L model, and I'm REALLY hoping its not a blown head gasket. Any signs I should look for if its a blown head gasket? Being the 4 cyl. the easiest way is to pull the spark plugs again and compare #2 plug to the other 3 looking for tip damage or clean wash compared to slight darkening of the others. I learned this "trick" WAY BACK in my YOUTH. IF all look the same, then you may have a coil going out and a stuck shut T-stat. I would suggest replacing BOTH stats at same time. DodgeBruhBoy 1 Quote Link to comment Share on other sites More sharing options...
DodgeBruhBoy Posted Tuesday at 03:31 AM Author Report Share Posted Tuesday at 03:31 AM 6 hours ago, 5rebel9 said: Being the 4 cyl. the easiest way is to pull the spark plugs again and compare #2 plug to the other 3 looking for tip damage or clean wash compared to slight darkening of the others. I learned this "trick" WAY BACK in my YOUTH. IF all look the same, then you may have a coil going out and a stuck shut T-stat. I would suggest replacing BOTH stats at same time. Ok, thank you very much for the response. Ill check tomorrow when I get in. Quote Link to comment Share on other sites More sharing options...
DodgeBruhBoy Posted Thursday at 04:07 PM Author Report Share Posted Thursday at 04:07 PM I checked the car today, the spark plugs have no discoloration or damage but they were recently changed. I check the oil and there is no discoloration or etc, all the fluids appear to be at the same level and the coolant doesn't have discoloration either. Quote Link to comment Share on other sites More sharing options...
DodgeBruhBoy Posted Thursday at 05:05 PM Author Report Share Posted Thursday at 05:05 PM (edited) Update: I ended up taking the car in early this morning and just got a call from my mechanic, and he said he went through the car, drove it, let it run and etc and no overheating at all. He said there is no leaks, smells, or anything. He did say that the coolant was low, and put in a half gallon but right as of now, there is no over heating after an hour of driving and letting it run. Any suggestions? Edited Thursday at 05:07 PM by DodgeBruhBoy Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted Thursday at 05:29 PM Report Share Posted Thursday at 05:29 PM Well, after a shop has checked it over like you post. Drive it AND monitor for misfiring coming back and CEL AND monitor interior heat quality{low coolant will cause low heat} drive the car as normal and keep a check on fluid levels under the hood. Quote Link to comment Share on other sites More sharing options...
Leroy Posted Thursday at 07:48 PM Report Share Posted Thursday at 07:48 PM Unfortunately i had this same code with cylinder 2 a few years ago on my 2013 SE 2.4l and it was the head gasket. i had a little over 71K miles and the extended warranty i purchased ended at 70K. i was not happy as it was a $1,500 repair but i paid it. I wrote to Dodge customer service and they issued me a check for half the cost. I had the repair completed at the local dealer and had to send Dodge my invoice. I felt somewhat better about the situation but still upset the head gakset failed after 5 years. Good luck with your Journey. Quote Link to comment Share on other sites More sharing options...
Dean H Posted yesterday at 02:14 AM Report Share Posted yesterday at 02:14 AM (edited) Specifically , You need to check the coolant level cold and after being driven full hot. You need to learn how the coolant level changes. Then check it daily. While your checking your coolant. Check all your fluids and hoses. Know what is going on under your hood. Before you go driving. Go read this post below, I made regarding maintenance. It's up to you monitor this situation. The Journey's engines cannot take too many overheats. Before it's scrap. Edited yesterday at 02:21 AM by Dean H Quote Link to comment Share on other sites More sharing options...
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