1997 f450 algea problem and wont read computer - Ford Powerstroke Diesel Forum
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Old 08-15-2011, 03:24 PM
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1997 f450 algea problem and wont read computer

I have a 1997 f450/superduty that has about 115,000 on it 5sp 4.88 with dump/service bed and ran great (last 7 yrs)till I filled up and found algea in the fuel filter change the filter but as I thought it was sludge and I was on side of the road got home it ran fine. Went to restart it about week later and it runs about 45 sec slowly dies so thought needs a filter open filter and its solid black crap

I clean it all out of the tanks and notice the fuel line is full off it ran K1 in fuel line with seperate pump to clean the lines and then notice front fuel tank is real nasty in side so clean the back one and have not used the front one.
Still wont run seems to run out of fuel..... I checked the lift pump fuel pressure and it was about 15psi so I changed the pump and I am getting 60+psi at idle. runs great drive down the road for test drive and check engine light comes on and it dies just like I shut it off.

Well put try to restart but starter would not engage the siloinod gave up. I towed it home and had a tire blow out on the way (at this point I was real ready to burn it).

Let it set for a few weeks as I have other trucks and I am sick of working on this one.

Well put starter and tire on it and starts right up but dies just like I shut if off after 40sec, but runs great. Well get a diagonsitc computer and it wont read anything on it. yes I checked the computer it reads my other trucks fine.

Aside from burning it what would you do I am about ready to put a 5.9 in it.
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Old 08-15-2011, 04:34 PM
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Have you replaced the CPS yet.They are prone to give this very symptom,runs fine and cuts off as if turning key off.They are fairly cheap and easy to install
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Old 08-15-2011, 09:40 PM
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Check the lighter fuse in the cab. IIRC, it's the one that powers the connector.

As for your fuel issue, isn't there also a little screen somewhere in the fuel bowl you always gotta inspect when you have fuel-related issues?
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