davkir
Gold Member
I was helping a delivery guy unload today. It was a brand new Ford F450 with a custom bed. After 3 minutes of idling it shuts itself off. He said it's REALLY annoying.
Diesel versus gas maintance
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I was helping a delivery guy unload today. It was a brand new Ford F450 with a custom bed. After 3 minutes of idling it shuts itself off. He said it's REALLY annoying.
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sandman2234
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You get used to it, or you figure out how to get around it. I talked to my boss about me waking up cold and starting the truck, and it shhutting off before the engine warmed up. Since the computer told the whole story about my low idle times, he had the idle shutdoown disabled on my truck
David from jax
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sandman2234
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Ok, just to add a little bit to my lack of knowledge, now that I have the truck...
Left the house, after 5 minutes of warmup, drove 2 miles, stopped for traffic at a light, and when I started to go, no go. The truck never left idle, "service engine soon" light came on, and since I was holding up traffic, I let the clutch out and it idle'd around the corner, and a 1/4 mile up the street before the light went out and the truck decided to "go". Up on startup the next day, as I started to go, and the light popped on, engine stayed at "idle". It did that "light on, idle only" three times yesterday. After the first time, I dropped by one of the local parts stores, and they brought their trusty tester out and checked for codes, but none were available. That either means their reader doesn't read diesel trucks codes OR the truck doesn't retain the codes once the light goes off.
Any clues on what types of code readers I need, or better yet, anyone have any idea what might be the problem. Things that run through my head are the throttle sending unit, or for some reason the CPS (isn't that the catch-all for 7.3???).
Thanks guys, David from jax
Left the house, after 5 minutes of warmup, drove 2 miles, stopped for traffic at a light, and when I started to go, no go. The truck never left idle, "service engine soon" light came on, and since I was holding up traffic, I let the clutch out and it idle'd around the corner, and a 1/4 mile up the street before the light went out and the truck decided to "go". Up on startup the next day, as I started to go, and the light popped on, engine stayed at "idle". It did that "light on, idle only" three times yesterday. After the first time, I dropped by one of the local parts stores, and they brought their trusty tester out and checked for codes, but none were available. That either means their reader doesn't read diesel trucks codes OR the truck doesn't retain the codes once the light goes off.
Any clues on what types of code readers I need, or better yet, anyone have any idea what might be the problem. Things that run through my head are the throttle sending unit, or for some reason the CPS (isn't that the catch-all for 7.3???).
Thanks guys, David from jax
Soundguy
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i think the cps would just leave you stranded till you grabed the 10mm wrench and spare part and changed it.
the ce lamp and 'limp mode' might be some sort of position sensor error reading the position of the foot throttle... dunno.. that's guess.
as for the codes. there are many proprietary codes per manufacturer, and plenty for a diesel. the regular code readers just read the common ones.
soundguy
the ce lamp and 'limp mode' might be some sort of position sensor error reading the position of the foot throttle... dunno.. that's guess.
as for the codes. there are many proprietary codes per manufacturer, and plenty for a diesel. the regular code readers just read the common ones.
soundguy
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sandman2234
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What code reader will read a 7.3? If I am going to keep this truck, I might as well be prepared to buy what it takes to fix it.
Some of the CPS stories I read gave me the indication that "some" of the initial querks of the CPS was a couple of blips, then all out "call a wrecker" (or in our case, open the glovebox and get the wrench and spare part). That was one of the reasons I called the CPS a catch-all, is it gets blamed for a lot of stuff it seems, depending on the intelligence of the owner, or at least the mechanical ability.
David from jax
Some of the CPS stories I read gave me the indication that "some" of the initial querks of the CPS was a couple of blips, then all out "call a wrecker" (or in our case, open the glovebox and get the wrench and spare part). That was one of the reasons I called the CPS a catch-all, is it gets blamed for a lot of stuff it seems, depending on the intelligence of the owner, or at least the mechanical ability.
David from jax
Rhon
Bronze Member
Any code reader that will read OBDII should pick up any codes. Another sensor that can cause issues is the VSS sensor in the rear end. It went out on me hauling horses and I went from first to overdrive in about 10 feet. Besides a CPS, the VSS is another one I keep. Not sure if it could do what's happening to you but you never know.
Soundguy
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the can/obd readers read the generic codes.. not the manufacturer specific ones. for those.. you need the super expensive stuff or so I hear..
soundguy
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LBrown59
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You are correct in what you posted. :thumbsup:
56FordGuy
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Regular, cheap 'code readers' (like they have at auto parts stores)will not work on a 7.3 diesel. I've had 7.3 trucks since 1996, and have worked on more than I care to count. The least expensive diagnostic software that will work for your truck is AutoEngenuity, with the Ford Enhanced package. It runs between $300-400.00, presuming you already have a PC based laptop to run it on. It can do much, much more than simply 'read codes' though, so it's well worth the money.
If you have a Service Engine light, there should be trouble codes stored in the IDM (injector driver module). Check with Bob at dieselsite.com, he can set you up with the AE software. I'm not sure how far you are from Crystal Rivers, but he might be able to pull the codes for you if you're in the neighborhood. Tell him Blake from Tennessee said hi.
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sandman2234
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Regular, cheap 'code readers' (like they have at auto parts stores)will not work on a 7.3 diesel. I've had 7.3 trucks since 1996, and have worked on more than I care to count. The least expensive diagnostic software that will work for your truck is AutoEngenuity, with the Ford Enhanced package. It runs between $300-400.00, presuming you already have a PC based laptop to run it on. It can do much, much more than simply 'read codes' though, so it's well worth the money.
If you have a Service Engine light, there should be trouble codes stored in the IDM (injector driver module). Check with Bob at dieselsite.com, he can set you up with the AE software. I'm not sure how far you are from Crystal Rivers, but he might be able to pull the codes for you if you're in the neighborhood. Tell him Blake from Tennessee said hi.
Thanks 56,
Appears Bob has eased back on his working, now by appointment only, during the week. I might look for someplace closer that does Saturdays so that I don't have to take off from work. I don't mind spending a few hundred dollars to get the software, so that isn't a problem but I am working on another project that I have commited all my available extra funding to. As soon as that is done, I will probably give some software a whirl. Might be interesting to get into the brains of my truck, lol.
I probably should find somebody local that works on diesels regularly, just in case this problem gets worse.
David from jax
