diesel backfire???
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New User
Joined: Aug 2007
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diesel backfire???
OK so for a week now my 2000 7.3 has backfired whenever it feels necesary. Like once every 700 miles to 3 times in 50 miles. It threw a engine light today took it to autozone and no codes. I had a guy hook it to a ford machine and he told me it was the turbo going out but I don't understand how if it runs strong and only misses every now and then.
truck has 6 pos chip
4' exhaust straight
6637
AIH delete
WW
380000 miles
Any help would be greatly accepted.
truck has 6 pos chip
4' exhaust straight
6637
AIH delete
WW
380000 miles
Any help would be greatly accepted.
Thread Starter
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New User
Joined: Aug 2007
Posts: 18
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i didnt get exact codes he kept a secret which i didnt like i am in the same kinda industry and he sounded fishy but he told me to put the air intake heater back in and that something was upp with the exhaust back pressure was jacked up is there a place yall know of that would give me aprint out of the codes or atleast let me write them down he just wanted me to leave truck and give him $ 17000 to fix it lol Also i dnt hear a backfire i feel it but the truck sounds like it shuts off and picks right back up
Cargo Master
Joined: Apr 2006
Posts: 2,153
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From: Concord NC
change the cps my truck did the same thing. at hiway speed if the engine cuts out the tc is locked up and just rolls the engine back to life if it cuts out at a stop you have to re crank it. this is what mine did and it was the cps
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Where in Texas are you? Did you pay the guy for the diagnostics? If he charged you, then you've paid to see the codes, so he needs to offer them up.
From your description, it kind of sounds like your CPS is acting up on you. When mine acted up, it reminded me of an intake backfire (without the sound) on an old gasser. The CPS costs about $30 from Ford (stay away from NAPA etc. for this) Here's the instructions on how to change it. Welcome to guzzle's CPS R&R Web Page
The CPS is also under recall. If you haven't had it done, you could have Ford do it for free, but there have been some rough idle issues with the new one, so if you have a black CPS in your truck, I'd spend the $30 and swap it out yourself to see if that makes a difference. Keep the black one as a spare.
From your description, it kind of sounds like your CPS is acting up on you. When mine acted up, it reminded me of an intake backfire (without the sound) on an old gasser. The CPS costs about $30 from Ford (stay away from NAPA etc. for this) Here's the instructions on how to change it. Welcome to guzzle's CPS R&R Web Page
The CPS is also under recall. If you haven't had it done, you could have Ford do it for free, but there have been some rough idle issues with the new one, so if you have a black CPS in your truck, I'd spend the $30 and swap it out yourself to see if that makes a difference. Keep the black one as a spare.
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Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
They can make a noise like a back fire, but I'm not sure it's the textbook definition. Apparently out the tail pipe OR out the intake. Here's an old thread on the subject:
https://www.ford-trucks.com/forums/3...-backfire.html
I remember an issue about a POP noise while into the throttle heavy too. In fact, mine did it once some time ago. Scared the fire out of me. Pun intended. I squeezed a hell of a crease in the seat that day, too.
https://www.ford-trucks.com/forums/3...-backfire.html
I remember an issue about a POP noise while into the throttle heavy too. In fact, mine did it once some time ago. Scared the fire out of me. Pun intended. I squeezed a hell of a crease in the seat that day, too.
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Thread Starter
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New User
Joined: Aug 2007
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i am in denton tx and i did pay for a diag (dnt point and laugh) but I had read this site alot and I wanted to replace cps but wanted to seek input so tomorrow I will go to Ford and get one and fill yall back in Thanks for all the help so far guys
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
You're right up the road, man! I'm in Lewisville...
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
You need to find a few more things to say here on FTE so your post count reaches 25. Then your private messaging feature will be enabled (unless you become a supporter to get that now). We can figure out how to meet up through PM's so personal contact info isn't floating around on the WWW.
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New User
Joined: Aug 2007
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i would completely be into meeting up and seeing what the codes do read I would pay in beer or cash but i am at my ends in this I haul a trailer most of weekends and this backfire with a 30ft trailer is for the dogs
