Regulator to eliminate p0301 code

1997 CADILLAC DEVILLE CONCOURS

84,000 MILES • V8

MASTEROFDISASTER

MEMBER
4 POSTS

I have seen here a replaced regulator overcame p0301 and other dtc codes on Toyota. Where would I find regulator on my car listed above, if there is one? Will be replacing EGR and plugs today so may want to replace that regulator as well. Thanks, rg

Jul 30, 2019 at 8:31 AM

KASEKENNY

✓ASE Certified Mechanic
18,907 POSTS

Hi,

Are you referring to the fuel pressure regulator? If so, they can cause misfires if they are not allowing the proper fuel pressure but it normally effects more than one cylinder. I attached the process of how to replace this. Plus a guide on how to test fuel pressure.

Let me know if you have more questions. Thanks

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

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Jul 30, 2019 at 2:51 PM

MASTEROFDISASTER

MEMBER
4 POSTS

Thanks Kenny.

Jul 30, 2019 at 9:04 PM

KASEKENNY

✓ASE Certified Mechanic
18,907 POSTS

You are welcome. Thanks for using 2CarPros. Come back if you have more issues. Thanks.

Jul 31, 2019 at 7:03 AM

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