5.0 efi won't start
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New User
Joined: Aug 2007
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5.0 efi won't start
I've got a 1996 f-150 that was parked for 6 months, running well. I put in 5 gallons of gas, checked all the fluids and tried it. It turns over fine, comes close to starting, but won't. Here's a list of things i have changed:
fuel filter
throttle position sensor
crankshaft position sensor
distributor cap
rotor
coil
checked fuel pressure-35 lbs.
pulled plug wire- got spark
tried starting fluid
checked codes- got 1 showing cps, that's why i changed it. no codes since
fuel pump comes on for couple of seconds when key turned on
Any help with this would be appreciated.
fuel filter
throttle position sensor
crankshaft position sensor
distributor cap
rotor
coil
checked fuel pressure-35 lbs.
pulled plug wire- got spark
tried starting fluid
checked codes- got 1 showing cps, that's why i changed it. no codes since
fuel pump comes on for couple of seconds when key turned on
Any help with this would be appreciated.
Cargo Master
Joined: Jan 2004
Posts: 3,118
Likes: 149
From: South Dakota
The timing shouldn't be off unless somebody messed with it. Where are you spraying the starting fluid? Do you have a can of starting fluid that comes out in a mist rather than a stream? Other than that I would remove a couple spark plugs and see what they look like wet with gas or cruddy, or clean and dry.
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New User
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The starting fluid was a mixture of gas and liquid, depending on whether the can was tilted or not. I took both of the air intakes off the throttle body, held the throttle open, and sprayed directly into the throttle body as someone else tried to start it. I will pull a couple of plugs tommorrow. Could some of the injectors got fouled up with crud while the truck was parked?
Cargo Master
Joined: Jan 2004
Posts: 3,118
Likes: 149
From: South Dakota
That's possible, but that's partly the reason for trying the starting fluid. With the starting fluid you should atleast get a pop out of it to confirm that the spark is good.
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New User
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With the holidays, i haven't had time to work on the truck until today. I changed the spark plugs, tried to start it. it cranked for a while and when i depressed the pedal all the way to the floor, it started. It was idling fast, but i let it run about 5 minutes, oil pressure good, water circulating. When i tried to give it a little gas, it died. When i tried to restart it, the only way it would try to start was if i held the accelerator all the way to the floor. Came real close to restarting but not quite. Checked the codes and got a P0385, crankshaft position sensor, same one as before i changed the cps. I feel like i am getting close, just need some help. Happy holidays to all u guys, Thanks.
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Laughing Gas
Joined: Nov 2006
Posts: 1,125
Likes: 4
From: Olive Branch,Ms
Heres a great site to go to for info on the EFI system. Hope this helps. http://www.fordfuelinjection.com
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New User
Joined: Aug 2007
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still at it
okay, the truck will only start when the pedal is held all the way to the floor. Black smoke comes out of exhaust, so it must be running rich. went to ford fuel injection website and they say when pedal pushed to floor, the injectors are cut off. what would cause the truck to act like it is "flooded"? Could old gas in the tank cause such a problem? I put in 5 gallons of new gas. Still getting trouble code p0385, crankshaft position sensor. i really need some help with this, i'm losing my mind.
Senior User
Joined: Nov 2003
Posts: 318
Likes: 1
From: Cantonment, Fl
Even though you are getting spark you could still have a bad ignition module. I fought my 92 until I finally decided to change the module. Also check the fuel pressure at the rail. It could be low or it even could be too high if the pressure regulator has failed.
You could be getting the 385 code because of corosion on a plug, in fact a corroded electrical connector could be the cause of your problem.
You could be getting the 385 code because of corosion on a plug, in fact a corroded electrical connector could be the cause of your problem.
Elder User
Joined: Nov 2008
Posts: 668
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From: Northfield, MI
Ck the MAF sensor to make sure no spiders or anything made a nest in it. They shouldn't be able to get in there, but they do.
Also, disconnect the MAF connector and see if it will start normally.
Jay
Also, disconnect the MAF connector and see if it will start normally.
Jay
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New User
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got it running, new codes
Thanks for all the help. I found a wire that was pulled out of the cps connection, far enough to cause a problem, but hard to see. If i would of seen that sooner, could of saved the price of a new cps - oh well. the truck started and actually restarted without holding accelerator all the way down. It was idling fast, so i was checking the connections on the sensors while it was running and lo and behold, when i tapped on the ect, it idled down to normal. replaced the ect and now it idles like it should just a little rough. pulled the codes and got p1401, p1132, p1152. egr and running rich. Could it been a vacuum leak for staying parked so long? Thanks.
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