Check Engine Light
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New User
Joined: Apr 2004
Posts: 3
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Check Engine Light
I have a 1995 F-250 with a 351 auto. trans. I recently decided to do some minor mods to improve the performance of the vehicle. It seemed to make sense to do them one at a time to see how they would effect the speed density FI. The first thing I installed were FPP 'shorty' headers. Everything else was left original, including the rest of the exhaust system. The truck runs fine, but now the Check Engine Light comes on after the engine is warmed to operating temperature. This seems like an awfully minor modification to warrant a code, being I retained all original attachments. What gives?
Posting Guru
Joined: Apr 2003
Posts: 2,123
Likes: 2
From: WA
Did you take off the Oxygen sensor by chance?
You can pull the codes yourself with a paperclip, paper and a pen at http://www.broncodata.com/tech/codes.htm you could also goto autozone and they'll pull them for free.
You can pull the codes yourself with a paperclip, paper and a pen at http://www.broncodata.com/tech/codes.htm you could also goto autozone and they'll pull them for free.
