Volvo S40 rough idle

Tiny
JCARR43683
  • MEMBER
  • 2000 VOLVO S40
  • 156,000 MILES
Have a code P0300 on my car and need to find out how to correct the problem. Checked fuel preassure with 38psi with key at on position 34psi with car running. Replaced fuel filter and cleaned screen on bottom of fuel pump. Found replacment fuel line clip and did fuel preassure check again. Got 52-54psi with key at on position but drops down to 34-36 psi with car running. Any thoughts what my next step should be?
Sunday, January 23rd, 2011 AT 12:04 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
P0300-Random misfire are usually caused by vacuum leaks and bad gas.
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Sunday, January 23rd, 2011 AT 2:00 PM
Tiny
JCARR43683
  • MEMBER
  • 26 POSTS
Broke down and took the volvo to the shop. I was beside myself with what was wrong. Only 2 things wrong, had 2 coil wires in wrong spot and one of the lines to the turbo not in all the way. Wanted to thank you guys for all the advice. You really helped me out. THANK YOU!
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Saturday, February 19th, 2011 AT 3:51 PM

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