SPONSORED LINKS

2007 Chevrolet Colorado driviliti problems

Tiny
BROSVGS
  • MEMBER
  • 2007 CHEVROLET COLORADO
  • 2.9L
  • 4WD
  • AUTOMATIC
  • 791,890 MILES
Hi everyone can someone help me with the diagnose rough idle. And code p0300 on 07 chevy Colorado 2.9 engine. I check fuel pressure and = 80psi when running but ones I turn the truck off fuel pressure drops. Hope someone can help me Thank you an advance.
SPONSORED LINKS
Saturday, September 20th, 2014 AT 8:13 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
300 code is random misfire. It can be a bunch of things causing it however you fuel pressure seems tobe a bit high. Pressure shold be 50-57 psi with key on engine off and should hold for 1 minute if not it can be leaking through injectors as well as blockages on return lines.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Sunday, September 21st, 2014 AT 3:45 PM

Please login or register to post a reply.

Related Fuel Pressure Content

Fuel Pump Pressure Test
VIDEO
Fuel Pump Pressure Test
Instructional repair video

Sponsored links