straight piped problems?

gtpitstop · #1 (**permalink**) 10-23-2007, 10:36 AM

i recently went with the mbrp 3.5 downpipe and 4' straight pipe all the way back and since then i had my check engine light come on with many dtc codes. i had the stock exhaust straight piped before with no problems. can it be because of the bigger exhaust mod?

**TwinTurboStroker** · #2 (**permalink**) 10-23-2007, 10:47 AM

Quote:

Originally Posted by gtpitstop

i recently went with the mbrp 3.5 downpipe and 4' straight pipe all the way back and since then i had my check engine light come on with many dtc codes. i had the stock exhaust straight piped before with no problems. can it be because of the bigger exhaust mod?

What are the codes?

**WEWILLE** · #3 (**permalink**) 10-23-2007, 11:21 AM

Yea, first of all what are the codes, and no a larger exhaust will not through any codes, if done right. Maybe you bumped a connector loose or something while working underneath the truck, do a visual inspection of everything and its probvly something simple like a disconnected something.

#4 (**permalink**) 10-23-2007, 11:22 AM

What are the codes? I would go to the stealer and get the latest reflash.

gtpitstop · #5 (**permalink**) 10-23-2007, 11:25 AM

the truck is home but the codes were for:
fuel level sensor, cruise control lamp indicator, glow plug #2 circuit low, something with the FICM and a couple more. they didn't pop up until i changed the exhaust.

#6 (**permalink**) 10-23-2007, 11:41 AM

must have hit something. Exhaust wouldnt cause that.

720Deere · #7 (**permalink**) 10-23-2007, 12:17 PM

You didn't do any welding on the exhaust did you? It's odd that they all seem to be codes related to electronic devices.

**Logan** · #8 (**permalink**) 10-23-2007, 12:23 PM

I have never had an issue on any of my straight piped trucks.

gtpitstop · #9 (**permalink**) 10-23-2007, 01:46 PM

HERE ARE THE CODES:
P0460- FUEL LEVEL SENSOR CIRCUIT MALFUNCTION
P0480- FAN 1 CONTROL CIRCUIT
P0649- CRUISE CONTROL LAMP CONTROL CIRCUIT
P0672- GLOW PLUG #2 CIRCUIT FAILURE
P1378- FICM SUPPLY VOLTAGE CIRCUIT LOW
P2285- INJECTOR CONTROL PRESSURE SENSOR CIRCUIT LOW

**TwinTurboStroker** · #10 (**permalink**) 10-23-2007, 01:48 PM

I agree with everyone else, I think some thing was knocked loose or broke off....but 720 has a apoint, was anything welded, cuz that could cause a short in the truck if it wasn't grounded????

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