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2003 Chevrolet Astro Motor shaking.

Tiny
KITMS7
  • MEMBER
  • 2003 CHEVROLET ASTRO
  • V8
  • RWD
  • AUTOMATIC
  • 130,000 MILES
My van motor shakes when I drive it but it doesn't have a miss in it. It has also been using more gas. The problem started when I put Marvel Miracle Oil into the engine. Can you tell me what could be causing it to do that?
Tuesday, December 17th, 2013 AT 3:26 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It may be carbon broke off someplace, but scan for codes and check fuelpressure first with a gauge. Then check for a broken motor mount.
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Wednesday, December 18th, 2013 AT 7:54 AM
Tiny
KITMS7
  • MEMBER
  • 48 POSTS
Could it be?The spider inside of?The engine that?The gas run through? Its not?The motor mount. Its more of a vibration that runs through it
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Wednesday, December 18th, 2013 AT 10:46 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It may be but tht would normally set a code. Checkfor a vacuum leak, hoses etc. It may be that. If a spider goes bad normally the vehicle won't start.
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Wednesday, December 18th, 2013 AT 11:58 AM

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