E C U Codes

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Dec 5, 2003 | 07:52 PM

RazzMaTazz

Thread Starter

Freshman User

Joined: Nov 2003

Posts: 28

Likes: 1

From: NC

E C U Codes

Pulled codes today,got a 58 run code but my haynes book did not list it. I have replaced the entire ignition systom since Oct. Now I have a bad low rpm miss.It is worse at factory timing (10 degrees before) Thanks in advance. P.S. 85 f-150 4.9 4 speed,new; ECU, ignition module, stator, cap, button, wires, plugs, O2 sens,harmonic balancer.

Dec 5, 2003 | 08:03 PM

luckild

Senior User

Joined: Jun 2003

Posts: 400

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Are you sure the code is 58? New one on me. Let us know and we'll dig deeper.

Dec 5, 2003 | 08:14 PM

brown 4x4

Posting Guru

Joined: Jan 2001

Posts: 2,358

Likes: 3

From: Nebraska

Code 58 is an idle speed control motor code. Check your connections there. Make sure your idle screws are set properly, and/or set the idle according to the emissions sticker under the hood. Let me know if you need more info on it.

Dec 6, 2003 | 06:58 PM