Very slow acceleration
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Very slow acceleration
First of all, I'm brand new to the forum. Second, I'm new to diesels. Third, I've searched the forum over, but can't get the exact problem thread. So, hello and here I go.
96 7.3 turbo, 130,000ish miles, I've owned for 1.5 yrs.
It is very....i mean very, very slow to accelerate. All gears engage and clutch, master and slave were all replaced last summer. So, I'm confident there's no issue there. It takes forever in each gear for the truck to get up to speed. The rpm's are there. I read a couple of threads here and did the easy ones. I replaced air and fuel filters. I changes the TPS/APS and made sure the IVS isn't sticking. I have disconnected EBPV. None of these thing made a bit of difference. Anything ideas?
Thanks for any and all input.
96 7.3 turbo, 130,000ish miles, I've owned for 1.5 yrs.
It is very....i mean very, very slow to accelerate. All gears engage and clutch, master and slave were all replaced last summer. So, I'm confident there's no issue there. It takes forever in each gear for the truck to get up to speed. The rpm's are there. I read a couple of threads here and did the easy ones. I replaced air and fuel filters. I changes the TPS/APS and made sure the IVS isn't sticking. I have disconnected EBPV. None of these thing made a bit of difference. Anything ideas?
Thanks for any and all input.
Lead Driver
Joined: Apr 2016
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From: Bahstun
mine would barely go 65 unloaded when I got it
Mine had low fuel pressure, clogged FRP screen, leaking fuel line, leaking injector orings
I replaced the pump, rebuilt the fuel bowl, replaced injector orings and it runs well now.
stuff I did and maybe a good read for you
https://www.ford-trucks.com/forums/1...sel-truck.html
Mine had low fuel pressure, clogged FRP screen, leaking fuel line, leaking injector orings
I replaced the pump, rebuilt the fuel bowl, replaced injector orings and it runs well now.
stuff I did and maybe a good read for you
https://www.ford-trucks.com/forums/1...sel-truck.html
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I'll have to nurse it to auto parts store
I have not tested fuel pressure, but I know fuel is being sent efficiently and pedal is responsive as I said rpm's are good. I guess I will have it read at the parts store. I just want to have "diesel guy" help. We have none in my area. I had to take it to the dealer before and it was the brake assist. Cost me $400 for what I found out to be a $60 part and 30 minutes of time.
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Lead Driver
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From: Bahstun
Tire pressure gauge 1-100 PSI can read fuel pressure
check at idle and WOT
I like to use a gauge with a long hose and check in WOT in third.
Under 40 PSI means starving for fuel
no fuel = no boost = no power
Also what RPM are you shifting at? these dont make a lot of power under 2k RPM
check at idle and WOT
I like to use a gauge with a long hose and check in WOT in third.
Under 40 PSI means starving for fuel
no fuel = no boost = no power
Also what RPM are you shifting at? these dont make a lot of power under 2k RPM
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Shifting
No problem with shifting. I can't wrap my head around fuel pressure being an issue. Pedal is responsive. My truck just doesn't hardly want to move. It's like something is telling it not to. It's not the first time I've driven this truck. It's not rpm's, or lack of. I am not looking for power, I'm wondering what's stopping my power.
Post Fiend
Joined: Dec 2010
Posts: 10,121
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From: Orrville, Ohio
Hey there, welcome to the forum!
What are we talking about when we say it's slow? That can mean a lot of different things and without anything to compare it to, we're really just grasping at straws trying to provide advice.
Also, it might be helpful to go ahead and fill us in on some of the details of the truck. What cab configuration, bed length, 4x4 or 4x2, and does it have oversized tires or a bunch of aftermarket stuff on it? Just kind of helps us know whether we're dealing with a standard cab, 2 wheel drive, F250 with an empty bed, or a loaded down F350 with a service body full of tools and a welding rig in the back!
Aside from that, how comfortable are you with electronics? There are several solutions out there that will allow you to read real-time engine data from the truck; some for as little as $25-30 if you're comfortable doing so.
And one more thing, where are you located? If you happen to be close to another member here, we're always willing to help and chew the fat a while if we're close by...
What are we talking about when we say it's slow? That can mean a lot of different things and without anything to compare it to, we're really just grasping at straws trying to provide advice.
Also, it might be helpful to go ahead and fill us in on some of the details of the truck. What cab configuration, bed length, 4x4 or 4x2, and does it have oversized tires or a bunch of aftermarket stuff on it? Just kind of helps us know whether we're dealing with a standard cab, 2 wheel drive, F250 with an empty bed, or a loaded down F350 with a service body full of tools and a welding rig in the back!
Aside from that, how comfortable are you with electronics? There are several solutions out there that will allow you to read real-time engine data from the truck; some for as little as $25-30 if you're comfortable doing so.
And one more thing, where are you located? If you happen to be close to another member here, we're always willing to help and chew the fat a while if we're close by...
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More deets
When I say slow, I mean time to get ip to speed. A block from 1 to 2, bout the same from 2-3, then about 200 yards from 3rd gears to 4th, and if there are hills, it can take a mile to get up to 55 and overdrive . It is all stock. 2 wheel drive, regular cab, 8"-6" bed. Even tires are standard. I live in Michigan between Flint and Owosso. I have been offered $1500 more than I paid for it because the farmers want it for pulling. It is a shame that all I do is drive it with no load-pullung, or hauling in the bed.It was an Indiana truck with little rust, no dents.
Post Fiend
Joined: Dec 2010
Posts: 10,121
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From: Orrville, Ohio
^^That's a possibility! Does the truck make a "whooshing" sound as you get on it?
Well, that configuration should be pretty spunky!
What about the electronics? Are you froggy with the pixies? Torque Pro is a free (or $5) download, and the OBDII dongle is about $20. That'll let you see exactly what is going on with the sensors in the motor.
Does this issue get better after the truck gets up to operating temperature? I know with a stock tune in it, mine was almost dangerously slow until it warmed up.
Well, that configuration should be pretty spunky!
What about the electronics? Are you froggy with the pixies? Torque Pro is a free (or $5) download, and the OBDII dongle is about $20. That'll let you see exactly what is going on with the sensors in the motor.
Does this issue get better after the truck gets up to operating temperature? I know with a stock tune in it, mine was almost dangerously slow until it warmed up.