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Engine sporadically rumbles in idle

Tiny
BATTERY76
  • MEMBER
  • CHEVROLET S-10
1999 chevy s10, 120000 miles. The engine sporadically rumbles in idle, and hesitates momentarilly when gas is pressed down firmly. Problem seems worse when air conditioning is on. Changed air filter, pcv valve, and fuel filter and nothing has really changed. Scanner isn't reading any codes. Just wondering if you had any tips on where I should look next to fix this problem?
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Wednesday, June 27th, 2007 AT 5:52 PM

1 Reply

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
Check the plugs to see if one is going bad. When put under pressure even though the car is running all right it will start to miss, Check the plug wires also
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Thursday, June 28th, 2007 AT 9:03 AM

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