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HELP ! 86/87 fuel problem

 
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Old 11-26-2009, 10:19 PM
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HELP ! 86/87 fuel problem

800 miles from home, no manual. I own 3 86/87s, I just bought Tysons 91 and an NSX and NEVER had this happen. I know these cars nut for bolt.
Changed fuel pump because installed one was making unfamilliar buzz with known good one just in case
While I was there I changed plugs, fuel filter, cleaned throttle body. Car runs great UNTIL !
After 15 or 20 minutes or so it jerks and cuts out, has to be fuel starvation to FI system?
This pump is now making the same buzz as the previous one.
If I pull off the interstate and shut the car off and wait just a minute or so it runs great for 15 or 20 minutes and then cuts out, jerks and misses from fuel starvation. If i'm gentle with the pedal I can get it to go on for a few minutes with slowing top speed usually tops around 50 or so and again pull over and shut it down and it runs great again, the cycle begins again.
NO fuel smell anywhere. When I remove the fuel cap NO pressure hiss.
Car has sat for legnthy time but driven for the last few months, no problem until now.
?Possible fuel pickup cloged or seal on fuel tank top leaking?? Again NO fuel smell or leaks anywhere.
Code if flashiung 3 times, I don't have my manual with me to look up 3 flashes. I'm at friends house and have all tools necessary and have to be back 800 miles sunday night.
Thinking of pulling tank and just checking things over.
Help!
I'm in Indy.

Cheers
nigel

Last edited by nigel; 11-27-2009 at 11:39 AM.
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Old 11-27-2009, 11:38 AM
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Re: HELP ! 86/87 fuel problem

More info. The 3 code must have been a dormant code because the PGM-FI light didn't come on the whole 800 miles up here.
This morning the PGM-FI light came on and flashed a 12 code.
It still runs the same and without my maintenance manual i'm lost.
Please help.

Cheers
nigel
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Old 11-27-2009, 06:18 PM
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Re: HELP ! 86/87 fuel problem

More info again.
Found MM and code list. It says 3 code is MAP sensor and the 12 code is EGR valve.
Fuel pump is growling like a cat in a blender and it still runs great before it bucks and misses.

Cheers
nigel

Last edited by nigel; 11-28-2009 at 09:24 AM.
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Old 11-30-2009, 04:54 AM
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Re: HELP ! 86/87 fuel problem

So whats going on with this? Did you get it going? Are you gonna be able to drive her home?
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Old 12-07-2009, 07:59 PM
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Re: HELP ! 86/87 fuel problem

Limped back home, no problem !
Pulled the fuel tank while in Indy just to check for anything out of the ordinary but nothing.
Thinking maybe check valve on fuel tank ? This one as well as my other Preludes, (3) have always built pressure in the fuel tanks but this one isn't.
Just cant figure it out.

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nigel
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