1987 Other Buick Models

Tiny
DAVE87GNX
  • MEMBER
  • 1987 BUICK
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 50,000 MILES
My Car When Its Cold It Runs Great, After It Reaches 160 Degree Temp, It Starts To Hesitate.
Tuesday, November 18th, 2008 AT 7:09 PM

1 Reply

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
It is going into closed loop at that temp. This is when O2 startes adj. Fuel ratio a slow to respond O2 can cause hesitation. If you can find someone with a old OBDI scaner you can read component info. If O2 is got alot of miles on it a good place to start. Let me know and I'll try and get it running smooth.
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Saturday, November 22nd, 2008 AT 11:05 AM

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