1987 Other Buick Models

1987 BUICK
50,000 MILES • 6 CYL • 2WD • AUTOMATIC
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DAVE87GNX
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  • 2 POSTS
My Car When Its Cold It Runs Great, After It Reaches 160 Degree Temp, It Starts To Hesitate.
Nov 18, 2008 at 7:09 PM
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DOCFIXIT
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  • 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.
Nov 22, 2008 at 11:05 AM