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Ford F-Series Fuel Pump/Fuel System

193 messages,  Last post on Sep 19, 2012 at 5:35 PM

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What is this discussion about? Ford F-150, Truck

Messages Page 11 of 20

#98 of 193 Re: 93 F150 P.U. Fuel system [tgj1] by hazymoon

Sep 12, 2009 (1:50 pm)

Replying to: tgj1 (Jun 15, 2009 9:09 pm)
I don't know about the pancake part but I have 2 1992 f150 fords 6 cyl 4.9 and on both trucks my fuel pumps would not stop running and it would not start. Had gas had spare but the pumps would not stop running when the key was on! I took it to a 35 year ford man he didn't even look at it all he said was it is your IIC box, both times I had him put a new one on and the way I went Part is about $100.00 same with other truck IIC box!!

#99 of 193 1990 ford F 150 Fuel pump wont cut off by wannaname

Sep 20, 2009 (12:54 pm)

Hello, I have a 1990 F 150 . I replaced the fuel pump and now the fuel pump won't shut off resulting in the truck won't start unless I spray gas in carb. first. I have check fuel filter and gas is coming thru to engine.I also used the check valve in rail to check for fuel,I have replaced the fuel relay, fuel regulator, also. Could any one help with this problem.? I really appreciate all help.

#100 of 193 f-350 6.0 fuel sensor by bmarshall57

Oct 05, 2009 (8:32 pm)

I have a 2004 F-350 6.0 the sensor shows water in the fuel, today I drained the water seperator and there was only a couple drops, last week I changed the fuel filters and added a salution to obsorb the water, also it seems that when I loosen the fuel cap then put it back on the lite goes out for a while,could it be the sensor.
thanks for any suggestions

#101 of 193 1992 F-150 by broughan

Nov 17, 2009 (8:40 am)

I have a 1992 F-150 straight six. The problem is that when i turn the key to on the fuel pumps run continuously and wont shut off and check engine light is on but the truck will start but runs very very rough. This is and intermitent problem. I can turn the key back off and try it again and then they will work fine and the truck will run fine. Even while driving and seems to be running fine the check engine light will come on and it will run rough again. This just seems to happen whenever and wherever. I have changed the fuel filter, changed relays, cleaned both tanks. Fuel pressure was correct. Any ideas?? Do you think this is a computer problem.

#102 of 193 1991 f150 by dayna11

Nov 24, 2009 (2:49 pm)

when fuel selector is on front tank, engine idles rough and sill stall. If selector is on rear tank, truck idles smooth and runs well. But front tank will start overflowing throwing gas out. and the rear tank loses gas. Can anyone help me?? any ideas of what it could be??
 
thanks
**Dayna**

#103 of 193 Re: 1991 f150 [dayna11] by mike9408

Nov 24, 2009 (3:18 pm)

Replying to: dayna11 (Nov 24, 2009 2:49 pm)
You could try reversing the fuel return lines (front and rear).Now As far as running rough on front tank, check for an air leak (cracks etc) on front tank suction hose. (Most of this will be at the fuel switching valve, I believe located inside the left frame rail.)

#104 of 193 Re: 93 F150 P.U. Fuel system [hazymoon] by poli3

Nov 25, 2009 (8:03 am)

Replying to: hazymoon (Sep 12, 2009 1:50 pm)
I have a '92 460 in a motorhome and is doing the same thing - pump won't stop running and won't start. Hasn't run much in the last 5 years. Could you tell me exactly what the "IIC Box" is and where it's located? Thanks in advance.

#105 of 193 Re: 93 F150 P.U. Fuel system [poli3] by mike9408

Nov 25, 2009 (9:13 am)

Replying to: poli3 (Nov 25, 2009 8:03 am)
I do not know where the IIC Box is. But if I were you I would check the fuel return control valve as well. It may be returning all the fuel to the tank even though I beleive it is supposed to fail closed which would send all the fuel to the injectors I think. Not very sure about any of this as this is a lot different engine than the 300 6.
I would like to know what you find so please return to the site and let me know.

#106 of 193 Spark plugs on 460 by poli3

Nov 25, 2009 (12:35 pm)

Any help with how to get to the front spark plugs (and next one on passenger side)? '92 Ford 460 on a motorhome with E350 chasis. Thanks in advance.

#107 of 193 Re: 93 F150 P.U. Fuel system [mike9408] by poli3

Nov 25, 2009 (1:07 pm)

Replying to: mike9408 (Nov 25, 2009 9:13 am)
Checked with a mechanic and he didn't know what it was either. Traced the problem down to bad plugs -- creating my last post and how to get the last two plugs out!

Messages Page 11 of 20

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