Car sounds like popcorn popping

Tiny
GIRLIETAT
  • MEMBER
  • 2003 HYUNDAI ACCENT
  • 178,000 MILES
I examined the car and it is coming from the rear driver's side underneath. I am told that it may be a "DMTL" or "charcoal canister."My check engine light is always on and the diagnostic is saying that it is an emissions code. The car runs fine, I just want to know what is wrong with it as I have to get an Etest this month.
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Tuesday, March 13th, 2012 AT 6:20 PM

16 Replies

Tiny
SATURNTECH9
  • EXPERT
I need the exact trouble code number you have in the computer to help you further.
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Tuesday, March 13th, 2012 AT 6:43 PM
Tiny
GIRLIETAT
  • MEMBER
P1401, P0442 and P0440 are the codes that I have gotten. My concern is the sound that it is making and the fact that I have an etest coming up.
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Tuesday, March 13th, 2012 AT 7:15 PM
Tiny
SATURNTECH9
  • EXPERT
The only code I can find info on is for the P1401 says diagnostic module tank leakage malfunction. It also says no manufactors diagnostic info available. Thats on mitchell ondemand. Cant find any info for the other two codes for that car iam still checking though.
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Tuesday, March 13th, 2012 AT 11:08 PM
Tiny
GIRLIETAT
  • MEMBER
P0442 is EVAP Emission Control System Leak (small) and P0440 is EVAP Emission Control System Malfunction.
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Wednesday, March 14th, 2012 AT 2:02 PM
Tiny
SATURNTECH9
  • EXPERT
I know that but looking up those codes for your car couldnt even find them listed.
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Wednesday, March 14th, 2012 AT 4:40 PM
Tiny
GIRLIETAT
  • MEMBER
Ok. So now what?
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Wednesday, March 14th, 2012 AT 6:26 PM
Tiny
SATURNTECH9
  • EXPERT
I asked another moderator on here to look into it so iam waiting to hear back from him.
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Wednesday, March 14th, 2012 AT 6:31 PM
Tiny
GIRLIETAT
  • MEMBER
Alright
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Wednesday, March 14th, 2012 AT 7:29 PM
Tiny
SATURNTECH9
  • EXPERT
Here is what I have so far.
DTC P1401 Diagnostic Module-Tank Leakage: System malfunction. Manufacturer does not provide flow chart testing information about this DTC. Refer to Powertrain Management/Computers and Control Systems/Emission Control Systems/Evaporative Emissions System/Diagnostic Module-Tank Leakage (DM-TM)/Testing and Inspection/Procedures. See: Emission Control Systems Leak Detector Testing and Inspection ***************************************** DTC P0442 Evap. Emission Ctrl. System Small Leak Detected (1.0 mm) NOTE: Manufacturer does not provide any information about this DTC. Refer to Powertrain Management/Computers and Control Systems/Emission Control Systems/Evaporative Emissions System ******************************************** No PO440 listed
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Wednesday, March 14th, 2012 AT 8:24 PM
Tiny
SATURNTECH9
  • EXPERT
So do you only hear the noise with the key on coming from the charcoal canister?Or all the time?Is the noise constant or only certain times?
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Wednesday, March 14th, 2012 AT 8:26 PM
Tiny
GIRLIETAT
  • MEMBER
The noise is only when the car is running and driving. When the car is shut off, it does not make the noise.
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+1
Thursday, March 15th, 2012 AT 11:39 AM
Tiny
SATURNTECH9
  • EXPERT
Is the noise coming from the external solenoid I see in the pic you posted with hose going to the charcoal canister?
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Thursday, March 15th, 2012 AT 3:41 PM
Tiny
GIRLIETAT
  • MEMBER
I believe so.
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Thursday, March 15th, 2012 AT 4:13 PM
Tiny
GIRLIETAT
  • MEMBER
This is the part that is vibrating when the sound is being made.
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Thursday, March 15th, 2012 AT 4:48 PM
Tiny
JROLDAN84
  • MEMBER
I have the same problem! My car (Accent 2003 Automatic) has a sound in the rear-left side when I m driving (like a stone in the wheel, only when i'm driving). Also, the "Check Engine Light" is lit (code 1401. I rebooted the codes after test). Yesterday I replaced the fuel filter, and cleaned de injectors, but the light is on again today! My mechanic checks the fuel system and can't find leakage en the fuel system. I need some solution for it! Thanks very much
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Monday, April 30th, 2012 AT 3:59 PM
Tiny
JROLDAN84
  • MEMBER
I think i'm a problem with the canister but i'm not sure. I have problems when I try supply the gas tank (not matter if it's empty!). I think two problems they're related.
Somebody knows any solution?
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Tuesday, May 15th, 2012 AT 3:55 PM

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