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CEL comes on when towing light loads

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Old Jun 5, 2020 | 07:19 AM
  #1  
TripleJAmmunitions's Avatar
TripleJAmmunitions
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From: Texas city texas
CEL comes on when towing light loads

Hello I’m brand new to the sight as a member, but have been using y’all’s wisdom for over 2 years now. (Thank y’all for that by the way!)

Any way I have an 02 F-250 (technically a 2000 consider I have had the engine replace due to a bad seal causing a run away) and for some reason when towing light loads of 3,000/4,000 my check engine light comes on after roughly 3 to 4 miles it is chipped with a TS 6 position (plan on replacing with a PHP hydra), and I tend to keep is in the “50 horse power range”. I’m not sure what’s going on but could seriously use some help considering this isn’t just my business truck but also my personal truck.

P.S. if you need all of the info I have available about my truck I have it posted in my profile details.
 
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Old Jun 5, 2020 | 07:25 AM
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Need to get the codes read

Possibly catalytic converter clogged, but just a wild guess

 
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Old Jun 5, 2020 | 09:26 AM
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Try it with another trailer to rule out a problem with your trailer. As said above, the trouble codes would help narrow down the problem.
 
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Old Jun 5, 2020 | 01:21 PM
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TripleJAmmunitions
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It can’t be the cat, I have completely removed my exhaust from the cat back, she’s missing about 10’/12’ of exhaust. But I will try and get codes next time I’m towing to give y’all reference.
 

Last edited by TripleJAmmunitions; Jun 14, 2020 at 02:54 AM. Reason: Typo
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Old Jun 13, 2020 | 11:47 PM
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You are setting a code, since its a 7.3 with a tune Im sure you are defueling when your boost hits 23psi.
 
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Old Jun 14, 2020 | 02:57 AM
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Originally Posted by z31freakify
You are setting a code, since its a 7.3 with a tune Im sure you are defueling when your boost hits 23psi.
If that is my issue, is there a good/safe way to keep this from happening without removing or altering my tuner? I’m still fairly ignorant to diesel motors.
 
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