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1996 F-350 will only run smooth on one tank


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jaswag
New User

Oct 2, 2012, 9:02 PM

Post #1 of 7 (897 views)
1996 F-350 will only run smooth on one tank Sign In

1996 F-350 with 460 engine and duel tanks. had a fuel pump stop working, had both pumps replaced. after that only the rear pump would work, it ran really rough on the front tank. later had the front pump replaced, now the rear tank is running super rough???? any ideas, I had the work done by a qualified shop and they are puzzled and want to send it to the electrical shop. thank you


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 3, 2012, 3:18 AM

Post #2 of 7 (865 views)
Re: 1996 F-350 will only run smooth on one tank Sign In

I'm betting it has something to do with the quality of parts being used.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



jaswag
New User

Oct 3, 2012, 6:40 AM

Post #3 of 7 (858 views)
Re: 1996 F-350 will only run smooth on one tank Sign In

All parts are name brand from parts supplier, not chain stores. and both pumps have been replaced twice. they alternate running like crap....... could it be electrical?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 3, 2012, 7:09 AM

Post #4 of 7 (853 views)
Re: 1996 F-350 will only run smooth on one tank Sign In

And what brand would that be?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Discretesignals
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Oct 3, 2012, 7:11 AM

Post #5 of 7 (850 views)
Re: 1996 F-350 will only run smooth on one tank Sign In


Quote
rear tank is running super rough


What do you mean by this? Is the pump making some type of odd noise?

Could be contamination in the bottom of the tank that had gotten into your new pump. Important to be sure the tank is clean when installing a new pump. The sock doesn't filter everything.





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jaswag
New User

Oct 4, 2012, 6:28 PM

Post #6 of 7 (827 views)
Re: 1996 F-350 will only run smooth on one tank Sign In

they replaced both tanks with new as well. im thinking there has to be a problem in the tank selector valves or switch because everytime they work on one pump, the other starts messing up. now its running rough on the front as well, checked the codes and it said IAC/ACT sensor. doesnt make sense.....


jaswag
New User

Oct 4, 2012, 7:07 PM

Post #7 of 7 (825 views)
Re: 1996 F-350 will only run smooth on one tank Sign In

(Airtex pumps)






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