1988 Oldsmobile Delta 88 Shuts off randomly

Tiny
TONYD235
  • MEMBER
  • 1988 OLDSMOBILE DELTA 88
  • 3.8L
  • V6
  • FWD
  • AUTOMATIC
  • 165,000 MILES
Hello again: My car was shutting off so I changed the fuel pump and the car ran fine for a week or two, Not the car is shutting off again. But now it won't start until the next day. It's seems to be out of gas but I filled the tank myself. It also seems to have no spark How do I repair this problem? Thank you
Wednesday, April 15th, 2015 AT 6:39 AM

3 Replies

Tiny
FREEMBA
  • MECHANIC
  • 1,152 POSTS
If your check engine light is on you need to have the computer checked for codes. This is a simple process and most shops will do this for a very low fee (does not have to be a dealership or "high-end" shop).
Once you have the codes post them here for more help. This kind of sounds like a crankshaft sensor starting to go, but of course, there could be other reasons. (I need the code so that you wont waste money buying parts that may be unnecessary).
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Wednesday, April 15th, 2015 AT 7:49 AM
Tiny
TONYD235
  • MEMBER
  • 62 POSTS
Thank you! The codes (OBD1) are DTC 25 and DTC 15. I changed the Crank Shaft sensor about a month or so ago. I also changed the Temperature Sensor about a two weeks ago. The car rides along smooth then all of a sudden it shut off like the key was turned off or something. It use to start back up in less than a minute but now it takes a whole day. I have noticed that the Temperature light comes on while the car is shutting off, but the car is not running hot (hope this helps) thanks again. Also my gas mileage went from 350 to a tank of gas to 250 to a tank of gas.
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Wednesday, April 15th, 2015 AT 8:04 AM
Tiny
FREEMBA
  • MECHANIC
  • 1,152 POSTS
Have the fuel pressure checked. It sounds like a fuel pump going bad (pump works fine until it warms up and then it "overheats" and shuts down - will not work again until it cools down).
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Monday, April 20th, 2015 AT 7:19 AM

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