97 F350 - Surging? Fuel Problem?
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97 F350 - Surging? Fuel Problem?
My Truck is not running well. It feels like a fuel filter problem, starving for gas? I change the fuel filter every 5K, but the problem rasies it ugly head every 1k miles.
It surges when going up hills at about 3krpm
Truck Specs
97 F350, 460 7.5L, 4.10 rear, 215K miles.
KN FIKP, Cat Back system.
Just changed Plugs, wires & FI cleaned.
Cleaned MAS sensor.
It seems like there might be another inline fuel filter that I might be missing?
Any help is appriecated.
It surges when going up hills at about 3krpm
Truck Specs
97 F350, 460 7.5L, 4.10 rear, 215K miles.
KN FIKP, Cat Back system.
Just changed Plugs, wires & FI cleaned.
Cleaned MAS sensor.
It seems like there might be another inline fuel filter that I might be missing?
Any help is appriecated.
Posting Guru
Joined: Mar 2002
Posts: 1,429
Likes: 2
97 F350 - Surging? Fuel Problem?
Dual tanks?
If so,does it do it on both tanks?
What I am getting at,is that if it is a fuel starvation problem that acts like a filter it may very well be a marginal (worn out) fuel pump.
If so,does it do it on both tanks?
What I am getting at,is that if it is a fuel starvation problem that acts like a filter it may very well be a marginal (worn out) fuel pump.
Postmaster
Joined: Feb 2002
Posts: 3,496
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From: Calgary Canada
97 F350 - Surging? Fuel Problem?
4X4X4X4 is bang on
Unless you can isolate the problem to one tank or the other, I'd take a good look at both in tank fuel pumps. They wear out and cause the exact symptoms you're experiencing, I replaced both in my '89 and it solved the problem.
It fairly simple to do, run the tanks as close to empty as you can, get a buddy to help, and lower them down. It can be done fairly easily in an afternoon in your garage. A couple of bolts in the straps is all that's holding them there. Make sure you disconnect the filler hose first!
The fuel pumps just unscrew from the top of the tank. You can test them for operation, I forget what the rate they're supposed to pump is, but if they're shot, it's pretty obvious.
I replaced mine with units from a wrecker, I'm cheap. They worked great and I had no problems. I'm sure you can buy them from Ford, but I have no idea what they'll set you back.
Waxy
Unless you can isolate the problem to one tank or the other, I'd take a good look at both in tank fuel pumps. They wear out and cause the exact symptoms you're experiencing, I replaced both in my '89 and it solved the problem.
It fairly simple to do, run the tanks as close to empty as you can, get a buddy to help, and lower them down. It can be done fairly easily in an afternoon in your garage. A couple of bolts in the straps is all that's holding them there. Make sure you disconnect the filler hose first!
The fuel pumps just unscrew from the top of the tank. You can test them for operation, I forget what the rate they're supposed to pump is, but if they're shot, it's pretty obvious.
I replaced mine with units from a wrecker, I'm cheap. They worked great and I had no problems. I'm sure you can buy them from Ford, but I have no idea what they'll set you back.
Waxy
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97 F350 - Surging? Fuel Problem?
[updated:LAST EDITED ON 08-Dec-02 AT 08:16 PM (EST)]I have dual tanks, it happens on both tanks. I always run them dry, alternating each tank, hoping to keep the crap from building up.
Posting Guru
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97 F350 - Surging? Fuel Problem?
>I have dual tanks, it happens on both tanks. I always run
>them dry, alternating each tank, hoping to keep the crap
>from building up.
Not a good idea.
Running the fuel tanks dry is hard on the fuel pumps.
>them dry, alternating each tank, hoping to keep the crap
>from building up.
Not a good idea.
Running the fuel tanks dry is hard on the fuel pumps.
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Joined: Apr 2002
Posts: 35
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From: Corona
97 F350 - Surging? Fuel Problem?
Originally posted by ramarionjr
[updated:LAST EDITED ON 08-Dec-02 AT 08:16 PM (EST)]I have dual tanks, it happens on both tanks. I always run them dry, alternating each tank, hoping to keep the crap from building up.
[updated:LAST EDITED ON 08-Dec-02 AT 08:16 PM (EST)]I have dual tanks, it happens on both tanks. I always run them dry, alternating each tank, hoping to keep the crap from building up.
FYI
It was the fuel pump.
I am not running the tanks dry anymore.
Thanks for the help.
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Posting Guru
Joined: Mar 2002
Posts: 1,145
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From: IOWA
97 F350 - Surging? Fuel Problem?
Great work boys... The wife's chebby is doing something similar. We changed the filter a month ago and she said it is still acting up. (she was scared to tell me cuz I told her we were going to go trade it on a Powerstroke 
). I might check on how much it cost's for a fuel pump. Thanks one last shot before we trade it for a blue oval.
). I might check on how much it cost's for a fuel pump. Thanks one last shot before we trade it for a blue oval.
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