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rough ideling when in gear

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Old Jun 19, 2002 | 11:59 PM
  #1  
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rough ideling when in gear

I just got a 1977 F-150. When in park or neutral it idles fine.But when it is in gear stopped at a light or stop sign it idles rough and vibrates he hood badly.

Any suggestions? It has a 302 engine with 118k miles. I stole it for $370.00
 
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Old Jun 20, 2002 | 11:10 AM
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rough ideling when in gear

i have the same problem. i just now put it in Nuetral. problem solved
 
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Old Jun 20, 2002 | 11:17 AM
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rough ideling when in gear

You could try turning the idle speed up a little.
 
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Old Jun 20, 2002 | 11:11 PM
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rough ideling when in gear

>i have the same problem. i just now put it in Nuetral.
>problem solved


Very funny. Wouldn't you think it might be a vacume hose or some thing?

I speeded up the idle.Idles fast in nutral and park. Jerks when put it in gear. I lowered the idle back down.
 
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Old Jun 21, 2002 | 12:01 AM
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rough ideling when in gear

[updated:LAST EDITED ON 21-Jun-02 AT 01:01 AM (EST)]I have the same engine type, same problem. I've checked out everything with the exception of the fuel pump. That will be my weekend project.

I too would like to hear other's sugestion...
 
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Old Jun 21, 2002 | 12:18 AM
  #6  
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rough ideling when in gear

>I have the same engine type, same problem. I've checked out
>everything with the exception of the fuel pump. That will
>be my weekend project.
>
>I too would like to hear other's sugestion...
Let me knowif the fuel pump solves the problem.
Thanks.
 
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Old Jun 21, 2002 | 02:59 AM
  #7  
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rough ideling when in gear

Double check all of your vacuum lines, especially your hose to your power booster. I had a similar problem, I replaced the hose, the check valve, and put hose clamps on both ends of the hose and the problem subsided greatly.

Tony

'77 F250, 4X4 460 transplantee, "Flamer"
'74 F250. 460, "beater" now "1 dead ford"
'73 F250, "midnight auto" now a trailer for the flamer

 
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Old Jun 21, 2002 | 03:22 AM
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rough ideling when in gear

I had the same problem. I agree with the vacuum diagnosis. I took off my EGR valve and blocked it off. Problem solved. It wasn't hooked up right anyway. I hooked it all back up right for my smog test and it idles just fine. I had to make new gaskets for my EGR plate and carb. It might be a good idea to check these too. Good luck.
 
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Old Jun 21, 2002 | 09:57 PM
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rough ideling when in gear


That's another thing, I need to make sure all the vacuum lines are connected correctly. Problem is, I don't have a diagram to follow. Does anyone know if I could find one on-line? I would greatly appreciate the info!!!

79 F100 302, C4, and must have California emissions. (Bummer!)

 
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Old Jun 22, 2002 | 08:14 PM
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rough ideling when in gear

Where's Dennis been?
 
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Old Jun 22, 2002 | 10:35 PM
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rough ideling when in gear

Well, I've been to London England to visit the queen.
I've been to Hawaii.
I've been in 16 US States besides Hawaii.

I just come in from BBQing for the family.

Tonight,we had "steer with no legs" up here we call it Ground Beef.

Now, about the vacuum diagram.
You will need to e-mail me directly to just reply back with the diagram.
Please use an e-mail addie that can handle numerous photo's.

[font color=red]Dennis

Calgary,Alberta,Canada[/font]



[link:www.ford-trucks.com/guidelines.html|FTE Moderator]

http://www.clubfte.com/users/mil1ion/Minimorleytruck.JPG

[link:www.clubfte.com/users/mil1ion/Mil1ion.html|My Website,"North Of The 49th"]

[font color=red]
Please Don't Ask Me Any Tough Questions,
"I'm Saving My Memory For When I Develop Alzheimer's" [/font]


[font color=blue]78 F-150 429CJ,Silver,Explorer Pkg.
[/font]

 
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Old Jun 23, 2002 | 08:44 PM
  #12  
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rough ideling when in gear

[updated:LAST EDITED ON 23-Jun-02 AT 09:45 PM (EST)]Well, it wasn't the fuel pump. I tested it, and it had good flow. But Dennis (mil1ion) did e-mail me a diagram for the vacuum lines on my 302. BINGO, I had a vacuum line going from the EGR to the manifold vacuum tee. It should of went from the EGR to the VCV. BIG DIFFERENCE in performance! After changing the line around, all I had to do was adjust the idle speed. Thanks a million for the assist Dennis! Believe it guys, one little vacuum line can ruin your day!

Have fun all!!!
 
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Old Jun 23, 2002 | 11:47 PM
  #13  
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rough ideling when in gear

Thank all of you very much. I will check those vac. lines and probably block up that EGR.
 
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Old Jun 24, 2002 | 10:35 AM
  #14  
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rough ideling when in gear

 
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