Heard a huge bang while driving at 60 mph but no damage whatsoever

[MuRCieLaGo]

Misfire like that while just cruising?
Sounds like it's time to check some stuff. Check the PCM connections as been stated before, I don't know about Mopar but on Fords you MUST have the battery disconnected if you disconnect the PCM.
Other than that, I'd do plugs, wires and coils. Definetly something with ignition acting up on rare occasions.

Not a misfire. It pulls strong, I've got no problem whatsoever. Just a random BIG bang while decelerating at high speed once every 1,000 miles or so. I never changed the spark plugs since I bought the car in 2017 so yes I think it could be a good idea!

[Fatboy 18]

[MuRCieLaGo]

Yes exactly!!

[ViperSRT]

During decel you must be loading up the exhaust with raw fuel and once you accelerate the fuel is ignited. Sort of like the old days when someone would turn off the ignition for a second (with a carburetor) and then when they turn it on there would be a nice exhaust explosion. If you had cats you wouldn’t have it as they would burn off the fuel. Somehow you are getting fuel during decels, and inadequate spark. Could be the f/a ratio is too low to ignite until it collects in the exhaust.

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During decel you must be loading up the exhaust with raw fuel and once you accelerate the fuel is ignited. Sort of like the old days when someone would turn off the ignition for a second (with a carburetor) and then when they turn it on there would be a nice exhaust explosion. If you had cats you wouldn

[dave6666]

I've got no problem whatsoever.

Ignorance is bliss? No, you do have a problem. That is not normal and your huge backfire can end up damaging parts.

[AviP]

That's an interesting observation Murcielago.

[MuRCieLaGo]

During decel you must be loading up the exhaust with raw fuel and once you accelerate the fuel is ignited. Sort of like the old days when someone would turn off the ignition for a second (with a carburetor) and then when they turn it on there would be a nice exhaust explosion. If you had cats you wouldn’t have it as they would burn off the fuel. Somehow you are getting fuel during decels, and inadequate spark. Could be the f/a ratio is too low to ignite until it collects in the exhaust.

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During decel you must be loading up the exhaust with raw fuel and once you accelerate the fuel is ignited. Sort of like the old days when someone would turn off the ignition for a second (with a carburetor) and then when they turn it on there would be a nice exhaust explosion. If you had cats you wouldn

Well at this point I wonder what I can do to fix the issue, without touching anything on the exhaust system.

Ignorance is bliss? No, you do have a problem. That is not normal and your huge backfire can end up damaging parts.

You are probably right. But I wonder if there is a solution. I removed the cats to prevent the side sills from becoming too hot (and it worked!).

[ViperSRT]

Possible causes include leaking fuel injectors, an aftermarket tune or an ignition issue (bad plug, wire, etc).

[Camfab]

What’s it been 6 1/2 months of guessing what the non issue is? Just get that Nitrous kit for it, guaranteed it’ll find your issue. I’ll check back in 6 months.

[MuRCieLaGo]

Possible causes include leaking fuel injectors, an aftermarket tune or an ignition issue (bad plug, wire, etc).

Yes it makes sense. I will start with some basic tune-up. I don't think there's an aftermarket tune. Like I said it happens once every 1,000 miles or so. But I will start with plugs, basically. Thank you!

What’s it been 6 1/2 months of guessing what the non issue is? Just get that Nitrous kit for it, guaranteed it’ll find your issue. I’ll check back in 6 months.

"So Cal", I'm sorry you sir don't know what is "snow". I get you, here in Quebec we don't know what is that "COVID-19".

[GTS Dean]

During high vacuum states like decel, your fuel injectors very well could be leaking raw gas way down the exhaust system. Side exit exhaust racecars very often trail flame out the tips while engine braking into corners.

[Fatboy 18]

During high vacuum states like decel, your fuel injectors very well could be leaking raw gas way down the exhaust system. Side exit exhaust racecars very often trail flame out the tips while engine braking into corners.

Yeah,and it looks Great

[AZTVR]

During high vacuum states like decel, your fuel injectors very well could be leaking raw gas way down the exhaust system. Side exit exhaust racecars very often trail flame out the tips while engine braking into corners.

Yeah,and it looks Great

Viper-GTS-R-Track-Car-3.jpg

[Fatboy 18]

What a Picture, Cooooooooor

[Bill W]

Cool! Saved it to my desktop slide show.

[MuRCieLaGo]

Alright, thank you guys, I'll just consider it as a race car then!

[Fatboy 18]

Alright, thank you guys, I'll just consider it as a race car then!

Just stick a new set of Spark plugs in her

[Camfab]

Yes it makes sense. I will start with some basic tune-up. I don't think there's an aftermarket tune. Like I said it happens once every 1,000 miles or so. But I will start with plugs, basically. Thank you!



"So Cal", I'm sorry you sir don't know what is "snow". I get you, here in Quebec we don't know what is that "COVID-19".

Of course I know what snow is, that’s what’s in a snow cone. Anyway isn’t that the time most guys pull their cars apart to fix them? Wow, I think I need a long sleeve shirt today, it’s down to 70 degrees
As far as COVID19 is concerned, I wouldn’t even joke around about that one, it knows no borders.