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1991 Oldsmobile Delta 88 CHECK ENGINE LIGHT FLASHIES.

Tiny
THEBABYPUD1
  • MEMBER
  • 1991 OLDSMOBILE DELTA 88
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 105,475 MILES
Driving down road at 55 mile a hour and speedommiter drops down to 40 mpr then shoots back to 55 mph, and check engine light flashies along with the temp, light

I already replaced the coil and modulator along with the fuel filter. Last week.

After replacing these parts it stoped and now it is starting over agane.
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Sunday, July 5th, 2009 AT 1:55 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
CEL flashing pull the code/s from the computer might lead you somewhere to start


https://www.2carpros.com/forum/automotive_pictures/12900_GM_ALCL_35.jpg

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Sunday, July 5th, 2009 AT 2:01 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS


https://www.2carpros.com/forum/automotive_pictures/170934_aldl_17.jpg



Hello, did you check for codes? You place a jumper between the the A&B terminals of the datalink connector, turn the key on, no crank. The check engine lite starts flashing, you count the flashes to get the codes. Let us know what you find.
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Sunday, July 5th, 2009 AT 2:01 PM

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