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Old Jul 11, 2012 | 06:21 PM
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Default barn find that needs help

Hi guys i just bought this 96 f150 with only 50,k original miles the truck runs and drives perfect the only problem it has it that the CHECK ENGINE LIGHT is on i took it to a auto parts store to get it scanned and it was reading codes (P1443,P0171,P174 AND P0385) the only symptoms are that the truck doesnt want to start when its hot.. i figure out that when it does that i switch over to the rear tank and starts fine does anybody have the same problem??
thanks!
heres a pic
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Old Jul 11, 2012 | 07:58 PM
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P0171 and P0174 means lean on all injectors. Bank #1 and #2

P1443 is an emissions codes for the evap purge valve.

P0385 is a crank position sensor malfunction.

The fuel pump in the front may be going bad, you will need to check fuel pressure when the engine is cold vs hot.

The evap code is not something i'd worry about unless you have emissions testing where you are.

As fo the crank sensor, you will have to see if its build up with crud, if its getting power and generating a signal.
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Old Jul 11, 2012 | 08:33 PM
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Originally Posted by sylver91
P0171 and P0174 means lean on all injectors. Bank #1 and #2

P1443 is an emissions codes for the evap purge valve.

P0385 is a crank position sensor malfunction.

The fuel pump in the front may be going bad, you will need to check fuel pressure when the engine is cold vs hot.

The evap code is not something i'd worry about unless you have emissions testing where you are.

As fo the crank sensor, you will have to see if its build up with crud, if its getting power and generating a signal.

well evap lines where full of junk i clean them and seafome it.. i reset the computer and the check engine light was off for the majorly of the day but it came back on but this time the only codes it was giving me where P0171 and p0174 pending could it be a bad fuel pump?
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Old Jul 11, 2012 | 08:35 PM
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Mine did the same thing.. Changed the fuel pump, and ran like a champ. Still does.
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Old Jul 11, 2012 | 08:37 PM
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Originally Posted by silveradobeast
well evap lines where full of junk i clean them and seafome it.. i reset the computer and the check engine light was off for the majorly of the day but it came back on but this time the only codes it was giving me where P0171 and p0174 pending could it be a bad fuel pump?
Maybe, but first I would clean the MAF sensor to see if its not plugged up, check for vacuum leaks, especially if they are full of crud. Then check for fuel pressure.

What engine ?
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Old Jul 12, 2012 | 06:59 AM
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Check the fuel pressure on both pumps. I think AutoZone has loaner gauges. Make sure the truck is warmed up.
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Old Jul 12, 2012 | 11:30 AM
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Originally Posted by Warlockk
Check the fuel pressure on both pumps. I think AutoZone has loaner gauges. Make sure the truck is warmed up.
they do, idk about where y'all are but here they are $150. but you get your money back when you take it back so not a bad deal
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Old Jul 16, 2012 | 11:52 AM
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Originally Posted by sylver91
Maybe, but first I would clean the MAF sensor to see if its not plugged up, check for vacuum leaks, especially if they are full of crud. Then check for fuel pressure.

What engine ?
its got the 300..im pretty sure its the fuel pump
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Old Jul 18, 2012 | 05:23 PM
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well i filled my rear tank(re-set the computer) and drove the truck for two days and the check engine light never came back on..once i switch over to the front one and it came back on after a couple of runs... it has to be the fuel pump right??
thanks
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Old Jul 18, 2012 | 05:43 PM
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Originally Posted by silveradobeast
well i filled my rear tank(re-set the computer) and drove the truck for two days and the check engine light never came back on..once i switch over to the front one and it came back on after a couple of runs... it has to be the fuel pump right??
thanks
or clogged filter from sitting
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