Answer
May 30, 2024 - 10:39 PM
Hey there!
Alright, it sounds like your 2007 Chrysler 300 SRT8 is throwing a bit of a fit. Let's break down those codes and the symptoms:
1.) Vacuum Leak Check: The hissing sound suggests a vacuum leak. Get a can of carb cleaner (with the engine off!) and spray small bursts around the intake system hoses and connections. If the engine RPM changes when you spray a spot, that's your leak. Fix the leak and see if the misfire goes away.
2.) Fuel Injector Check: Since cylinder 3 is specifically misfiring, there's a chance the fuel injector on that cylinder is faulty. You can swap injectors around with another cylinder and see if the misfire code changes location. If it does, the injector needs cleaning or replacement.
3.) Compression Test: With high mileage, it's not a bad idea to do a compression test. This will check the health of the cylinders and rule out any internal engine issues causing the misfire.
If you're not comfortable tackling these checks yourself, take it to a mechanic you trust. They can diagnose the problem definitively and get your SRT8 purring again.
Once you've identified which part needs to be replaced, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Good luck getting your SRT8 running smoothly again!
Alright, it sounds like your 2007 Chrysler 300 SRT8 is throwing a bit of a fit. Let's break down those codes and the symptoms:
- P0300 and P0303: These codes point to a random misfire (P0300) with a specific misfire in cylinder 3 (P0303).
- Hissing and Vibration: A hissing sound could indicate a vacuum leak, which can mess with the air/fuel mixture and cause misfires. Vibration usually goes hand-in-hand with a misfire.
- OBD I/M Monitors: The red flashes with CAT, EVA, and O2S mean those emissions monitors haven't completed a test cycle yet. This isn't super important right now, but it's something to keep an eye on.:
1.) Vacuum Leak Check: The hissing sound suggests a vacuum leak. Get a can of carb cleaner (with the engine off!) and spray small bursts around the intake system hoses and connections. If the engine RPM changes when you spray a spot, that's your leak. Fix the leak and see if the misfire goes away.
2.) Fuel Injector Check: Since cylinder 3 is specifically misfiring, there's a chance the fuel injector on that cylinder is faulty. You can swap injectors around with another cylinder and see if the misfire code changes location. If it does, the injector needs cleaning or replacement.
3.) Compression Test: With high mileage, it's not a bad idea to do a compression test. This will check the health of the cylinders and rule out any internal engine issues causing the misfire.
If you're not comfortable tackling these checks yourself, take it to a mechanic you trust. They can diagnose the problem definitively and get your SRT8 purring again.
Once you've identified which part needs to be replaced, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Good luck getting your SRT8 running smoothly again!
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