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1998 Chevy Truck

Tiny
SR10247
  • MEMBER
  • 1998 CHEVROLET TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 204,553 MILES
IDLES ROUGH AND MAKES A TAPPING NOISE WHEN FIRST STARTED UP. AFTER A FEW MINUTES WHEN IT WARMS UP IT RUNS OK. SOMEONE TOLD ME IT MIGHT BE THE TORQUE NUTS HAVE BACKED OFF AND MAKES THAT NOISE UNTIL IT WARMS UP. SOMEONE ELSE SAID IT MIGHT BE THE TRANSMISSION.A 98 SIVERADO 2500 4 BY 4 350 ENGINE. NO SLIPPAGE FROM THE TRANSMISSION. JUST STARTED A FEW DAYS AGO.
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Tuesday, February 26th, 2008 AT 1:49 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light or has flashed before?

IDLES ROUGH AND MAKES A TAPPING NOISE WHEN FIRST STARTED UP.

The tapping noise could be lifter/s leakdown problem-rough idle inspect the tune parts: plug/wire/cap/rotor/both fuel/air filter. When in order start by checking the idle air control valve/EGR valve
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Tuesday, February 26th, 2008 AT 3:44 PM

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