Runs Rough
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Freshman User
Joined: Mar 2004
Posts: 37
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Runs Rough
Help! I Have A 92 F-150 4x4 With A 302 Motor And Auto Trans. It Is Not The Original Motor In It. It Was A Couple Years Off But Everything Interchanged, At Least I Think. (i Did Not Install The Motor) All The Connections Seem In Tact. When I Start The Truck In The Morning And Drive, It Will Run Rough. I'll Drive Till The Point That It Is Warmed Up Then I'll Shut It Off And Restart It While Moving. Then It Will Run Like A Dream. If I Stop To Get Gas Or Just Shut It Off For A Few, It Will Run Rough Again. I'll Repeat The Shut Off And Restart Process And Again It Will Run Great. Where Should I Start Looking? Egr, Map, O2, Computer? While Its Idling (when Its Running Fine) I Unplugged The 02 And It Ran Real Rough. I Figured It Would But Not This Bad. Could This Be It? Any Help Would Be Great. Thank You.
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Joined: Jun 2003
Posts: 3,549
Likes: 71
From: Calhoun GA
Try pulling the codes from the PCM with a code scanner or using this method:
http://fordfuelinjection.com/selftest.html
That's where I would start.
http://fordfuelinjection.com/selftest.html
That's where I would start.
