Answers
Feb 15, 2024 - 12:52 PM
If your car has trouble codes P0304 (Cylinder 4 Misfire Detected) and P0172 (System Too Rich - Bank 1), you should start by inspecting the spark plug, ignition coil, and fuel injector for cylinder 4 to ensure they are functioning properly. Additionally, try a compression test on cylinder 4 to rule out internal engine issues. Addressing the rich condition indicated by P0172 takes checking the air intake system for leaks, inspecting the MAF sensor, and examining the fuel pressure regulator. Look for vacuum leaks in the intake manifold or hoses.
Feb 16, 2024 - 03:36 AM
Hey there, Donald!
! Looks like you've been tackling those trouble codes on your 2005 Chrysler Pacifica like a pro. Props for swapping out the plugs and giving the injectors and coils some love. Now, for that P0304 (Cylinder 4 misfire) and P0172 (System Too Rich), here's the scoop:
Misfire on Cylinder 4 (P304):
You may need some parts in the process, 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.
Keep at it, you got this!
! Looks like you've been tackling those trouble codes on your 2005 Chrysler Pacifica like a pro. Props for swapping out the plugs and giving the injectors and coils some love. Now, for that P0304 (Cylinder 4 misfire) and P0172 (System Too Rich), here's the scoop:
Misfire on Cylinder 4 (P304):
- Good move on the plug and injector swap. Double-check the ignition wiring for cylinder 4, and make sure it's all snug.
- Do a compression test on that cylinder, just to rule out any internal engine funk.
- Scan for vacuum leaks - hoses and intake manifold gaskets are the usual suspects.
- Check your Mass Air Flow (MAF) sensor; give it a good cleaning or consider a replacement if it's acting up.
- Make sure your fuel pressure is playing nice. The regulator might be throwing a party it shouldn't.
- Keep an eye on those oxygen sensors, especially the one before the catalytic converter.
- Peek at the MAF sensor, a dirty one can mess with your mix.
- Confirm fuel pressure is in the sweet spot.
- Check for leaks in your exhaust – gotta keep those gases in check.
You may need some parts in the process, 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.
Keep at it, you got this!
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