2003 7.3L won't start
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2003 7.3L won't start
So my 2003 7.3L took a **** a week ago while driving. Lost power and was spitting oil all down the road. Couldn't get it to turn over again so I had it towed home. Here's what I did to try to fix the issue...
Thanks in advance and Happy 4th
** I forgot to mention, after I replaced the IPR, it started so I turned it off. Tried to start it again and blew a HPOP hose. Now it won’t start after replacing the hoses
- Replaced the IPR
- Changed out the HPOP Hoses because I found that one had a hole blown out of it
- Filled it back up with oil
- Checked the fuel bowl to make sure there is fuel in the fuel bowl
- Filled the HPOP reservoir up
- Hooked up a battery charger to the batteries so I could keep cranking it over to try to get any air purged form the HPOP lines
Thanks in advance and Happy 4th
** I forgot to mention, after I replaced the IPR, it started so I turned it off. Tried to start it again and blew a HPOP hose. Now it won’t start after replacing the hoses
More Turbo
Joined: Apr 2003
Posts: 502
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From: The Pas, MB, Canada
Did it turn over when you were cranking it to purge air?
Later in your post you state that it still won’t turn over.
Do you have a scanner to run tests?
I’ve been dealing with a no start condition for some time so will follow this thread.
Good luck.
Later in your post you state that it still won’t turn over.
Do you have a scanner to run tests?
I’ve been dealing with a no start condition for some time so will follow this thread.
Good luck.
Fleet Mechanic
Joined: Apr 2019
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From: South AR
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Fleet Mechanic
Joined: Apr 2019
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From: South AR
do any of your friends have 7.3’s? Pretty much everyone I know thatbhas one of these vehicles seems to keep one in the glove box. It certainly good insurance.
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definitely does need to be motorcraft. Even different versions of the Motorcraft one don’t work right!! Horror stories otherwise. If you’re in a real bad spot and tying prevent a tow you could try one I guess but just know you may be urinating in the wind. You will definitely want to replace it with a Motorcraft immediately. Frankly I’m a little shocked I even said OK with that. Makes me nauseous..
do any of your friends have 7.3’s? Pretty much everyone I know thatbhas one of these vehicles seems to keep one in the glove box. It certainly good insurance.
do any of your friends have 7.3’s? Pretty much everyone I know thatbhas one of these vehicles seems to keep one in the glove box. It certainly good insurance.
Fleet Mechanic
Joined: Apr 2019
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From: South AR
Did you see what sous wrote? Seems 2003 models don’t read the chart related to the tach. Sorry if I led you in the wrong direction. I’d still charge the batteries back up and try again and go from there. You may get lucky.
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Joined: May 2014
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From: Lake Hartwell, GA
Somewhere in 2001 things changed and the CPS stopped sending the engine revolutions to the tach as it did in earlier models.
See the tach move in my 2000 in the video below. I believe the only way to check a post 2001 tach move change is through the use of a scan tool.
See the tach move in my 2000 in the video below. I believe the only way to check a post 2001 tach move change is through the use of a scan tool.
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Just saw that. I think I’ll still pick one up to see if it fixes anything. If not, I’ll keep cranking lol. I’m not sure what else it could be.
Got Data?
Joined: Dec 2012
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From: Lake Stevens, WA
Really need to get a scanner on the OBDII port and read ICP and IPR duty cycle, and see if they are coming up into the normal range yet. If it ran before the HPOP hose blew, I would think getting the air purged is all that is needed to get 'er going.
I recommend the Forscan app on your phone and an OBDII bluetooth (android) or wifi (ios) dongle to read your codes and monitor engine parameters like ICP and IPR DC. See OBDII tools in my signature
I recommend the Forscan app on your phone and an OBDII bluetooth (android) or wifi (ios) dongle to read your codes and monitor engine parameters like ICP and IPR DC. See OBDII tools in my signature
