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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old Aug 31, 2012 | 11:50 PM
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1991F35075L's Avatar
1991F35075L
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Issues

Had a couple issues develop in my truck, I would have the details in my sig but I don't have enough posts yet.

1991 F350
7.5L engine
CC LB
4x4
stock tires and height
110k miles

I see my truck idle at about 600-650 rpms and at those rpms it seems to run a bit rough. Condition happens throughout the day no real specific time to pin point. I have also been seeing my check engine light come on when the truck is warmed up or it is warm outside, the check engine light stays on about a minute then goes away. I am not able to go to a mechanic so was just posting to see if anyone had some insight. Thanks for all the help in advance, really enjoy being here!
 
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Old Sep 1, 2012 | 12:39 AM
  #2  
2007F150FX4's Avatar
2007F150FX4
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Joined: Jun 2010
Posts: 77
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From: Gilbert, AZ
Pulling the codes is where I would start.

The link below will help walk you through the process:

Ford Ranger/Bronco II EEC-IV Testing
 
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