Last post on Sep 19, 2012 at 5:35 PM
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Ford F-150, Truck
Dec 01, 2011 (12:06 am)
1990 ford f150 6 cylinder, bought this truck 2 months ago, would not start , was not getting fuel to spark plugs, spray gas or eather in throttle body would run till it was gone, put new fuel pump, fuel regulator, and just put in new fuel injectors, still not getting fuel to spark plugs, put nodes on wiring to check power to fuel injectors, nodes blink real fast, so i am getting power to the injectors, this truck has duel tanks, it was running off of the back tank only, if you push the selector switch from back to front tanks,you can hear the pump run, i took out the front tank, and left it out because it had water dirt build up and the fuel pump was no good, since i put in this new stuff i have not check the fuel pressure, bot it is getting fuel to the relief valve on the fuel rail, if anyone can help me i would really be thankful,
#181 of 193 Re: fuel problem [3312jeff]
Dec 01, 2011 (2:42 am)
The fuel pump should run for a few seconds after turning on the ignition switch. You should be able to hear it run during this time...Have someone turn the ignition switch on while you listen at the tank...If you cannot hear the pump run I would check the fuel pump relay. It should be located on the drivers side inside fender well just behind the air filter box. Also, check the inertia switch on the inside of the cab next to the steering column where it goes through the firewall, reset it if necessary.
#182 of 193 Re: fuel problem [mike9408]
Dec 01, 2011 (7:56 am)
mike, fuel pump runs, it runs about 3- 5 seconds, iam getting fuel up to the fuel rail, my fuel injecters are not spraying, does fuel pressure open the injectors or does the computer do it when start up, thank you
#183 of 193 92 f-150 fuel problem
Dec 13, 2011 (9:42 pm)
I have a 92 with a 302 duel fuel tanks...The truck starts up and drives great on a cold start up, after driving for appox. 15 min. if i shut the truck off it won't start back up..just turns over..if I wait for about a half and hour..it will start back up..but runs rough. i have replaced fuel filter,pressure regulator. Also, When I do try to start it when hot..if I hold the pedal to the floor it tries to start but usually for a second and then stalls. I only use the front tank..the back never worked...but I can hear both pumps kick in when I turn the key. Just looking for some help..thanks
#184 of 193 Re: 92 f-150 fuel problem [jrrchr]
Dec 15, 2011 (11:10 pm)
do this, next time it does it. pull one of your spark plugs off and see if you are getting any gas in your cylinder,if not it might be your sock on your fuel pump, or your fuel pump might be getting hot and not pumping enough
#185 of 193 Re: 92 f-150 fuel problem [jrrchr]
Dec 16, 2011 (6:43 am)
have you got any codes ? could be pick up coil .
#186 of 193 1992 f150 5.0 fuel relay chatter
Apr 18, 2012 (8:10 pm)
I've seen a lot of talk about fuel pump relay chatter but very few answers from people that found their problems. I've checked grounds, inertia switch and connections and wiring. One thing that I did find is when I can catch the relay chattering, I can pull the relay and insert a noid light across the control connections and the noid light continues to flash,(a regular test light would only stay lit) My question is, is the relay controlled only by the ECM or are there other moduals to consider? This is an intermittent problem. Sometimes runs fine but can act up while you're driving or after it's been shut off and won't re start. Thinking I'm headed for a new ECM, but first i'm pulling the bed so that I can check the electrical connections at the tanks. Thanks for any comments.
#187 of 193 Hard start problem on F150 STX 4.6 2006
Jul 28, 2012 (1:33 pm)
Hi, I have a 2006 ford f-150 4.6L with hard-starting issues. The truck often cranks longer than usual, which tends to happen after it's been shut off for at least 15 minutes. When the hard-start happens the engine also often "stumbles" into a start and then has a rough idle for 10-30 seconds. After that, it runs and drives fine. I've noticed the truck tends to start better right after it's been shut off and also after it has been sitting overnight (though not always), but usually *not* after it's been shut off for 15-120 minutes (still warm)- in fact this seems to be when the issues are most frequent, at least 15 minutes after vehicle has been shut off.
I have had the code checked and always says "number 6 cylinder missfire" I have replaced the plug, replaced the coil twice as I evidently broke the first one, replaced the fuel pump, replaced the fuel filter and replaced the fuel rail pressure/temperature regulator. STILL no solution. I am going broke here.
I have seen where others have had the same problems but I can never seem to see their solutions if any.
Could someone help me PLEASE?
Aug 19, 2012 (12:31 pm)
I have a 96 F150. My question is, do the fuel tanks run off each other? In other words, do they empty at the same time?
#189 of 193 Re: 96 F150 [cakedude]
Aug 19, 2012 (3:07 pm)
No, the tanks do not run at the same time. There is a "fuel switching valve" in the drivers side frame rail right behind the cab. You should be running off of one tank at a time, if your not, there is probably a problem with the valve. Locate the valve then check to be sure power is getting to the valve. If you are getting power to the valve then you probably need a new valve. If you are not getting power to the valve then you may have a blown fuse.