Please help!
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4th Gear
Joined: Dec 2022
Posts: 4
Likes: 1
Please help!
Have a 2000 Model 7.3 165k miles, just got the truck probably a month back. Haven’t had a single issue with it, yesterday morning got in it started fine got 1 mile down the road and it started sputtering/surging wouldn’t run right jerking inside the cab. Would lope and sometimes die at idle. Threw a SES light. Limped it back home to shop, noticed it was smoking. Read some forums checked fuel filter, changed ICP changed IPR most forums with my issues said one of the two fixed it. Truck supposedly just had new injector wiring harness this year. Neither fixed it went and bought a scan tool, since no fix and it receives power from obd2 port to power the tool but doesn’t give any information to it. Had a buddy bring a snap on one cause mine was a harbor freight special same problem couldn’t locate the vin and when entered manually it would say connecting and never connect. I’ve check the fuse cigarette lighter works. Could a bad PCM be the culprit of all these issues? I don’t want to keep just throwing parts at it. Minimal experience with these trucks.
Cargo Master
Joined: Mar 2019
Posts: 2,907
Likes: 788
From: Kinnula,Finland
Welcome to the FTE!
You need a scanner that supports J1850 PWM protocol.
Generic scanner won't work with these engines.
Forscan APP and BAFX or OBDlink dongle,for example.
What was the fuel level when this happened?
Below 1/4 tank problems start If you have a broken pickup tube in a tank.
You need a scanner that supports J1850 PWM protocol.
Generic scanner won't work with these engines.
Forscan APP and BAFX or OBDlink dongle,for example.
What was the fuel level when this happened?
Below 1/4 tank problems start If you have a broken pickup tube in a tank.
Thread Starter
|
4th Gear
Joined: Dec 2022
Posts: 4
Likes: 1
Welcome to the FTE!
You need a scanner that supports J1850 PWM protocol.
Generic scanner won't work with these engines.
Forscan APP and BAFX or OBDlink dongle,for example.
What was the fuel level when this happened?
Below 1/4 tank problems start If you have a broken pickup tube in a tank.
You need a scanner that supports J1850 PWM protocol.
Generic scanner won't work with these engines.
Forscan APP and BAFX or OBDlink dongle,for example.
What was the fuel level when this happened?
Below 1/4 tank problems start If you have a broken pickup tube in a tank.
Yes I have noticed the 1/4 tank issue already was made aware soon after getting the truck it almost acts the same way as it did when I ran it out of fuel. However it’s got a full tank.
Cargo Master
Joined: Sep 2015
Posts: 2,857
Likes: 365
As Finnish suggested the forscan app and a obd Bluetooth dongle is now your best friend ( and will continue to be as long as you own the truck), especially if you are throwing codes. You can get the dongles on Amazon pretty quickly, I have had good luck with the bafx model. This will help eliminate throwing random parts at the truck and make diagnosis much easier. There are some write ups on forscan in the tech section at the top of our sub forum.
Lead Driver
Joined: Jul 2017
Posts: 6,846
Likes: 2,326
From: WV
Originally Posted by 7.Slow
Yes I have noticed the 1/4 tank issue already was made aware soon after getting the truck it almost acts the same way as it did when I ran it out of fuel. However it’s got a full tank.
Better check is to confirm fuel pressure. There’s an easy method in the tech folder at the top of our forum. Here’s a link to it. https://www.ford-trucks.com/forums/a...4&d=1592859516
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4th Gear
Joined: Dec 2022
Posts: 4
Likes: 1
I believe they were Dorman I wanna say however I will double check this statement in the morning. I ordered a Bluetooth dongle that will be here by 6 am so hopefully can get this resolved tomorrow!
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4th Gear
Joined: Dec 2022
Posts: 4
Likes: 1
Quick check, open the fuel bowl drain and cycle the key. You should get plenty of fuel flow.
Better check is to confirm fuel pressure. There’s an easy method in the tech folder at the top of our forum. Here’s a link to it. https://www.ford-trucks.com/forums/a...4&d=1592859516
Better check is to confirm fuel pressure. There’s an easy method in the tech folder at the top of our forum. Here’s a link to it. https://www.ford-trucks.com/forums/a...4&d=1592859516
I believe my fuel pressure is good however I will check it also if problem persists after I read these codes.
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Tuned
Joined: Nov 2018
Posts: 292
Likes: 64
From: PA
Remember, all Motorcraft parts for engine regarding sensors and the like.
Keep this in mind, you may be fuel starved at WOT, which could indicate a weak HPOP. Could be other issues but a little research on this website will give you some good advice. There is a No start or engine dying thread that gives a logical list of what to check first.
My quest is there's a item not fully functional or able to communicate to your PCM causing problems. The beauty of these dinosaurs is that there is not a whole, complicated system running these engines.
. And once you get familiar with them, you will be ably to pinpoint problems quicker. Even, perhaps, replacing parts BEFORE they fail.
That way. You will have a known good spare part in your parts bin for future use.
Logistics Pro
Joined: Aug 2009
Posts: 3,609
Likes: 324
From: Arizona
Also are you sure what part of the wiring was replaced and was it new or used? It is a common issue for the harness to short where it crosses over the valve cover, and it is also common for the under valve cover harness to come unclipped, or loose resulting in burned contacts. If you shoot the exhaust manifolds with a temp gun while it is running you can see if one side is not firing which could mean the harness on that side came undone inside the valve cover..
3rd Gear
Joined: Dec 2022
Posts: 3
Likes: 1
From: Virginia
As mentioned, next stop would be UVCH since they’ve supposedly been “repaired” not long ago.
Good luck and let us know what you find
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