Running rough

Tiny
RNEWSOM101
  • MEMBER
  • 2003 DODGE RAM
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 221,000 MILES
Cut off catalytic converter straight piped. Now it spits sputters runs high rpms, then lows but still bounces back in fourth roughly. Is this the cause of cutting of converter? Or could it be something else didnt do this before I cant even drive my truck at this point.
Saturday, January 23rd, 2016 AT 5:26 PM

22 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
I don't know why you would cut off a converter. All that gets you is problems.
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Saturday, January 23rd, 2016 AT 6:05 PM
Tiny
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It was rattling and smelt like rotten eggs. I was told by several people to just cut off converter for time being till I can get a converter. I know a lot of older trucks I haven't had this problem. Any solutions on what I need to do to fix this problem.
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Saturday, January 23rd, 2016 AT 6:19 PM
Tiny
WRENCHTECH
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The first thing you need to do is put the Cat back on. Have the computer scanned for codes. You will probably have Cat codes also now. The rotten egg smell was caused by the way the engine was running, not the converter.
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Saturday, January 23rd, 2016 AT 6:22 PM
Tiny
RNEWSOM101
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So most likely putting the cat back on can clear up the problem. Or there still will be cat codes that come on. How do I reset codes.
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Saturday, January 23rd, 2016 AT 6:24 PM
Tiny
WRENCHTECH
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We will find out once the Cat is back on. You will need a code reader to read or clear the codes.
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Saturday, January 23rd, 2016 AT 6:31 PM
Tiny
RNEWSOM101
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OK I have a reader I'll do that and get back to you tomorrow. Thanks for your help. But your opinion is that not having cat is where my problems are none of this happen till it was cut off
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Saturday, January 23rd, 2016 AT 6:33 PM
Tiny
MHPAUTOS
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You issue is probably a combination of existing faults compounded by removing the cat, as mentioned, re fit the cat, clear all codes and do a drive cycle, re code even if there is no check light and start from there.
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Saturday, January 23rd, 2016 AT 8:11 PM
Tiny
WRENCHTECH
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I think I already said that.
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Sunday, January 24th, 2016 AT 5:00 AM
Tiny
RNEWSOM101
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  • 12 POSTS
OK I put cat back on cleared codes and truck still running rough. It dies when trying to drive still reving high and then flexuating back and forth.
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Sunday, January 24th, 2016 AT 11:21 AM
Tiny
WRENCHTECH
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Did you read the codes before deleting them? What were the numbers?
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Sunday, January 24th, 2016 AT 11:23 AM
Tiny
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P0032 p0700 p2706 p0750 and now it p032 and p038
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Sunday, January 24th, 2016 AT 11:32 AM
Tiny
WRENCHTECH
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P032 and P038 are not real codes. You are missing a digit there.
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Sunday, January 24th, 2016 AT 11:35 AM
Tiny
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We also need the engine size
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Sunday, January 24th, 2016 AT 11:36 AM
Tiny
RNEWSOM101
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P0032 p0038
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Sunday, January 24th, 2016 AT 11:37 AM
Tiny
RNEWSOM101
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V8 5.7 hemi
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Sunday, January 24th, 2016 AT 11:37 AM
Tiny
WRENCHTECH
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Those codes indicate you have transmission issues and a problem with the circuit for the 0/2 heaters. Since it's more than one 0/2 with a heater problem, I doubt the sensors themselves are to blame. You need to start troubleshooting these codes one at a time.
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Sunday, January 24th, 2016 AT 11:43 AM
Tiny
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Well if its not the 02 not to blame where should I trouble shoot sorry just trying to figure out my steps
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Sunday, January 24th, 2016 AT 11:47 AM
Tiny
WRENCHTECH
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You have to follow the wiring circuit and determine if an where you have lost either power or ground for the 0/2 heaters. If you don't know how to do that, you are going to have to pay someone to do it for you.
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Sunday, January 24th, 2016 AT 11:51 AM
Tiny
RNEWSOM101
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OK just wondering is it possible that I should let it run some and it could pick the 02 sensor by running and it being reset
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Sunday, January 24th, 2016 AT 11:54 AM
Tiny
RNEWSOM101
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Can someone tell me what the flashing lightening bolt on dash is
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Sunday, January 24th, 2016 AT 2:32 PM

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