New to site with problem
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Senior User
Joined: Nov 2009
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From: Dayton MD
New to site with problem
I am in need of front ball joints and started looking for info. Found this site on google and all the info to try the ball joints. ( Great Site)
My problem is on wet or damp days when I start my truck it will start missing on the # 5 cylinder on and off. I can get under the hood and push on the connectors going into the valve covers or the harness in the same place and get it to run right. After it runs for awhile, and warms up it won't do it again. and I can go a month or more with no problems. I have spent 600 -700 for a fix and still does this. The harness under the valve cover has been replaced but to no avail. Has anyone had a problem with this. It's a 99 f 350 dulley 7.3. Thanks A Curtis
My problem is on wet or damp days when I start my truck it will start missing on the # 5 cylinder on and off. I can get under the hood and push on the connectors going into the valve covers or the harness in the same place and get it to run right. After it runs for awhile, and warms up it won't do it again. and I can go a month or more with no problems. I have spent 600 -700 for a fix and still does this. The harness under the valve cover has been replaced but to no avail. Has anyone had a problem with this. It's a 99 f 350 dulley 7.3. Thanks A Curtis
Posting Guru
Joined: Jan 2007
Posts: 2,174
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From: Millersburg, OR
Have you tried sticking some dialectic grease on it? Maybe you are in need of a new engine harness if you already changed out your valve cover harnesses. Or you need to solder in a new connector...
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
I would say it's time to pull the valve cover and check the wires. Remember new does not always mean good. If they only replaced the under valve cover harness (UVCH) you also need to check the pins that pass through the valve cover for continuity. Make sure to wiggle the pins around while testing. A loose, broken, or burnt pin can cause an intermittent connection.
If that checks out, we'll find a diagram for you to ohm the wires from the valve cover back to the 42 pin connector to see if there are any problems in that stretch of the harness, but if wiggling the connector makes it better, it sure sounds like it's between the connector you grab and the injector.
Welcome to FTE.
If that checks out, we'll find a diagram for you to ohm the wires from the valve cover back to the 42 pin connector to see if there are any problems in that stretch of the harness, but if wiggling the connector makes it better, it sure sounds like it's between the connector you grab and the injector.
Welcome to FTE.
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Senior User
Joined: Nov 2009
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From: Dayton MD
Thanks for all the leads. I guess if it keeps doing it I'll change the harness under the valve cover. I got the ball joints on today Just waiting for a couple seals and brake covers and will finish that tomorrow. If I had'ent found Racerguys post I don't think I would have tried that job. Great site. A Curtis
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From: Dayton MD
I took the truck in for the recall today. I talked to the tech that was working on it . He seems to think that with the work done (valve cover gasket uvch) that it's most likey the fuel injector drive module. I have a post on finding that. Looking for something less than 900.00 from ford. Thanks
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Snowboard season cometh..
Joined: Jan 2006
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From: Gulf Coast of Florida
Andrew - first, welcome to FTE!!
Before you replace the IDM, please go back and see post#4 in this thread and start with that.
Also, out of curiosity, in your first post you said:
"The harness under the valve cover has been replaced but to no avail."
but then later (post#6) you say:
"I guess if it keeps doing it I'll change the harness under the valve cover."
so I'm a bit confused as to what harness exactly was replaced.... the UVCH or some other one? If indeed it was the UVCH do you know if the "retainer clips" were installed to help keep that harness from coming loose? Ford part# for the clips is 2C3Z-14A163-AB. I just bought a set last week for ~$14, but here's another tip: For OEM parts, call up Ed (www.partsguyed.com). He's a member here and will give you hands-down, the best prices & service on OEM parts. Absolutely great guy to deal with!
Some users on here have made their own 'clips' by grinding down a quarter so it can be know as the 50¢/quarter clip mod.) See THIS THREAD. Post #2 shows loose UVCH. Post #8 shows modified quarter, installation of said quarter, and also covers a great maintenance item of checking & re-torquing injector hold-down & rocker arm bolts.
Before you replace the IDM, please go back and see post#4 in this thread and start with that.
Also, out of curiosity, in your first post you said:
"The harness under the valve cover has been replaced but to no avail."
but then later (post#6) you say:
"I guess if it keeps doing it I'll change the harness under the valve cover."
so I'm a bit confused as to what harness exactly was replaced.... the UVCH or some other one? If indeed it was the UVCH do you know if the "retainer clips" were installed to help keep that harness from coming loose? Ford part# for the clips is 2C3Z-14A163-AB. I just bought a set last week for ~$14, but here's another tip: For OEM parts, call up Ed (www.partsguyed.com). He's a member here and will give you hands-down, the best prices & service on OEM parts. Absolutely great guy to deal with!
Some users on here have made their own 'clips' by grinding down a quarter so it can be know as the 50¢/quarter clip mod.) See THIS THREAD. Post #2 shows loose UVCH. Post #8 shows modified quarter, installation of said quarter, and also covers a great maintenance item of checking & re-torquing injector hold-down & rocker arm bolts.
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
Also, not all ford dealers know their stuff when it comes to these trucks. Some are good, some are not. FTE has many threads concerning that topic.
Thread Starter
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Senior User
Joined: Nov 2009
Posts: 106
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From: Dayton MD
I do get a check light while it's doing this. It goes out when it starts running right. I had the valvecover gasket with connector replaced. the injectorwireing harness on right side. The # 5 injector quits. the codes are p1249 p1316 p1211.
Thread Starter
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Senior User
Joined: Nov 2009
Posts: 106
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From: Dayton MD
That did work a couple times but no more. This problem only comes up in wet weather high humidity. If I let the truck get warm it goes away till it gets wet again.
Thread Starter
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Senior User
Joined: Nov 2009
Posts: 106
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From: Dayton MD
Andrew - first, welcome to FTE!!
Before you replace the IDM, please go back and see post#4 in this thread and start with that.
Also, out of curiosity, in your first post you said:
"The harness under the valve cover has been replaced but to no avail."
but then later (post#6) you say:
"I guess if it keeps doing it I'll change the harness under the valve cover."
so I'm a bit confused as to what harness exactly was replaced.... the UVCH or some other one? If indeed it was the UVCH do you know if the "retainer clips" were installed to help keep that harness from coming loose? Ford part# for the clips is 2C3Z-14A163-AB. I just bought a set last week for ~$14, but here's another tip: For OEM parts, call up Ed (www.partsguyed.com). He's a member here and will give you hands-down, the best prices & service on OEM parts. Absolutely great guy to deal with!
Some users on here have made their own 'clips' by grinding down a quarter so it can be know as the 50¢/quarter clip mod.) See THIS THREAD. Post #2 shows loose UVCH. Post #8 shows modified quarter, installation of said quarter, and also covers a great maintenance item of checking & re-torquing injector hold-down & rocker arm bolts.
Before you replace the IDM, please go back and see post#4 in this thread and start with that.
Also, out of curiosity, in your first post you said:
"The harness under the valve cover has been replaced but to no avail."
but then later (post#6) you say:
"I guess if it keeps doing it I'll change the harness under the valve cover."
so I'm a bit confused as to what harness exactly was replaced.... the UVCH or some other one? If indeed it was the UVCH do you know if the "retainer clips" were installed to help keep that harness from coming loose? Ford part# for the clips is 2C3Z-14A163-AB. I just bought a set last week for ~$14, but here's another tip: For OEM parts, call up Ed (www.partsguyed.com). He's a member here and will give you hands-down, the best prices & service on OEM parts. Absolutely great guy to deal with!
Some users on here have made their own 'clips' by grinding down a quarter so it can be know as the 50¢/quarter clip mod.) See THIS THREAD. Post #2 shows loose UVCH. Post #8 shows modified quarter, installation of said quarter, and also covers a great maintenance item of checking & re-torquing injector hold-down & rocker arm bolts.