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1990 Ford Aerostar Starts, runs briefly, then dies

Tiny
EZEARLN
  • MEMBER
  • 1990 FORD AEROSTAR
Howdy, I have a 1990 Ford Aerostar Cargo Van 277,000+/- miles. Engine will start, runs for between 45 seconds and 2 minutes then dies, originally checked fuel pressure at the fuel rail discovered it was low >20PSI, replaced fuel pump and strainer, fuel pressure improved 38-40PSI but problem persists. Pulled a plug to confirm spark, starts out bright blue fades to yellow and the engine dies. Suggestions as to probable cause greatly appreciated
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Wednesday, March 7th, 2007 AT 3:02 PM

2 Replies

Tiny
BUBBA_KOSKI
  • MECHANIC
  • 129 POSTS
Now try checking the coil for a deep blue spark, if its a good spark then remove the cap, and check under to see if there is corrosion on the terminals of the cap., But before anything is it injected? If not then calibrate the fuel mixtures, and see what it gives you. What kind of plugs do you have? Autolite is made just for ford, id go with either autolite, or motorcraft.

Let me know so I can actually help.
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Wednesday, March 7th, 2007 AT 4:33 PM
Tiny
EZEARLN
  • MEMBER
  • 3 POSTS
Hey, I pulled a plug previously, to check spark, started hot and blue then to yellow then the engine dies. I just replaced the ignition coil But the problem persists. Any suggestions? Thanks
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Wednesday, March 7th, 2007 AT 4:46 PM

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