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Engine Rattling/Check Engine Light after repairs

Tiny
KNHAUSER
  • MEMBER
  • 1998 BUICK LESABRE
  • 3.8L
  • V6
  • AUTOMATIC
  • 113,000 MILES
After resealing/repairing the intake manifold gasket, I am getting a Check Engine Light and my vehicle is vibrating when idling and on the highway. There has been no loss of control but the rattle is very noticeable. Where should I start checking for troubleshooting? The nearest place with a code scanner is about 3 miles away.
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Wednesday, November 18th, 2015 AT 9:51 AM

4 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
What is the code number being set in the computer when the light comes on?
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Wednesday, November 18th, 2015 AT 11:06 AM
Tiny
KNHAUSER
  • MEMBER
  • 3 POSTS
Codes are P0305 - Cylinder 5 misfire and P0113 - Intake Air Temperature Sensor Circuit High Input
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Wednesday, November 18th, 2015 AT 11:10 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
You are going to have to find the cause for the cylinder #5 misfire. Check all you coilss and plug wires.

The air temp sensor code was probably due to turning the key on while the snorkel was off and the sensor was unplugged. Make sure it is plugged in now and clear the code.
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Wednesday, November 18th, 2015 AT 11:17 AM
Tiny
KNHAUSER
  • MEMBER
  • 3 POSTS
Will do. Thanks!
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Wednesday, November 18th, 2015 AT 11:20 AM

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