Flashing check engine light, codes P0300 and P0507, engine rattle noise

Tiny
BKTOURANGEAU
  • MEMBER
  • 2008 CHEVROLET EQUINOX
  • 3.4L
  • V6
  • AUTOMATIC
  • 200,000 MILES
Rattle noise in engine and 2-codes: P0300 and P0507, check engine light always flashing.
Do you
have the same problem?
Yes
No
Monday, June 20th, 2022 AT 5:49 PM

1 Reply

Tiny
STEVE W.
  • EXPERT
P0300 is a random multiple misfires and the P0507 is a high idle speed. The common cause for both of those could be a vacuum leak.
Try this guide to see if you can find it:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

You will want to look at all the vacuum lines and fittings as well as the brake booster for the leak. The plastic pieces get brittle and the rubber lines rot from the heat and fluids under the hood.
Was this
answer
helpful?
Yes
No
Monday, June 20th, 2022 AT 8:35 PM

Please login or register to post a reply.

Sponsored links