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Why CEL after putting in gas?? All the time?

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Old 04-11-07, 12:21 PM
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RedPhoenix
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Default Why CEL after putting in gas?? All the time?

This is the 3rd time I filled up my tank all the way and my CEL came on. 2 times at Hess and another time at BP. All 93 octane.

Code 13 = rpm signal or knock, everythign tells me something different.


but why? how can I fix this?

im goign to change my fuel filter, but what else can it be?
Old 04-11-07, 12:24 PM
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DaveGS4
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Sounds like you aren't putting your cap on tight enough.

Or (lower probability) do you leave your car running while you fill up?
Old 04-11-07, 12:28 PM
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mkorsu
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Faulty gas cap (bad seal). Fairly common and an easy fix.
Old 04-11-07, 01:35 PM
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ElitistK
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Originally Posted by mkorsu


Faulty gas cap (bad seal). Fairly common and an easy fix.
yep, had that on my old car too.
Old 04-11-07, 06:55 PM
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RedPhoenix
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that will throw a CEL?

i shut off the car to fill.

the seal "looks" fine

it doesnt hiss while the car is on or anything

Last edited by RedPhoenix; 04-11-07 at 07:00 PM.
Old 04-11-07, 10:22 PM
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SimonR
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I thought that knock sensor errors were code 53. My manual says that code 13 is as follows:
Attached Thumbnails Why CEL after putting in gas??  All the time?-error_13.jpg  
Old 04-12-07, 05:17 AM
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RedPhoenix
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so what does that mean? LoL
Old 04-12-07, 11:29 AM
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aaronjz
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isnt the codes different for obd 1 and 2 what year is ur car?
Old 04-12-07, 08:41 PM
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RedPhoenix
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obd1 1992

thanks
Old 04-15-07, 01:34 AM
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GRAND_LS 4
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most likely the gas cap seal. I've seen it happen before, but im not sure if it should throw out a code 13 though.
Old 04-15-07, 05:57 AM
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RedPhoenix
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well i replaced my fuel filter... seems to gotten rid of the code almost 100%
Old 04-15-07, 06:31 AM
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96gti2.0t
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my sc has this same problem and i changed my gas cap thinking the same thing
Old 04-15-07, 09:43 AM
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RedPhoenix
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when was your fuel filter done?
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