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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

93 5.8 stalling?

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Old May 3, 2010 | 11:46 AM
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From: Nixa
93 5.8 stalling?

I had a 93 5.8 swapped into my 93 F-250 with a 5.8 recently and it has a stalling problem. It seem like it is running out of gas when it shifts from 1st to 2nd, or at about 20 to 30 mph.
The truck had this problem before the engine swap, after I started driving it again after a few months of sitting, but it eventually went away after a few days of driving it.
At that time I could drive it like 12 to 15 miles before it started acting like it wasn't getting fuel. Now it does it like I described earlier.
1. Any ideas what is causing this?
It's about the only thing stopping me from getting my truck back.
Oh I'm having a new fuel filter and oxygen sensor put in this week and having the fuel pressure checked.
2.What should the pressure be?
3. Anything else I need to check?
Thanks in advance.
 
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Old May 3, 2010 | 11:55 AM
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From: Easton,Ks
With the engine not running and pin #6 of the test plug grounded with the key on and the pump running 45 PSI.
 
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Old May 4, 2010 | 08:10 PM
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From: Hollister MO
Well hummmm
 
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Old May 5, 2010 | 06:55 PM
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From: Hollister MO
40psi with key on. 30psi when running. If I pull the vac hose off the Fuel pre reg. 40psi when running.

Not sure what pin 6 is?
 
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Old May 5, 2010 | 07:23 PM
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From: Easton,Ks
Pin 6 of the EEC Self-Test Connector.
Sound a little low or you gauge may be off some.

EEC Self-Test Connector:


/
 
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Old May 5, 2010 | 07:33 PM
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From: Hollister MO
New gauge off the Oreillys shelf. but I know that dose not mean any thing.

So while waiting for a reply, I was working on changing the fuel filter. some one tried before and smashed the filter and bent the inlet and messed up the teeth on the outlet side hose. So I had to pull really hard and pulled the teeth out with the filter. will get a new set of teeth tomorrow.

will post results.

Also the filter was way nasty.
 
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Old May 6, 2010 | 06:59 PM
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From: Hollister MO
with the 6 pin grounded the best I could get is 42psi
idles at 30psi drives at about 30psi the more gas I give it the higher the psi gets max 40ish stalls at 1900rpms and 40ish psi about 25mph.

also new O2 sen tonight
 
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Old May 6, 2010 | 08:03 PM
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From: Laquey, MO
Fuel pressure regulator?

In all reality it sounds like a sensor issue...
 
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