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#1 (permalink) Old 09-16-2009, 05:36 AM
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hello guys,

i just brought a 2005 tc like 2 months ago. the engine check lamp was on 1 month after purchase. i took the car to someone who has a diagnostic code reader. i forgot what the diagnostic code manual said, it seemed that the gas was slightly leaking or something. the guy told me that normally, the reason is due to that i did shut down the gas tank cap properly. so we tighten the cap and he helped me to clear the engine check lamp. the car seemed to be ok until recent, the lamp went on again. i have refilled the gas several times and since the car drives just ok, i'm guessing it is again the gas tank cap problem. but i don't have a diagnostic code reader. i'm still a little worrying about the engine.

now i want to buy a code reader. but i don't know which one i should buy. i only need a cheap reader that tells me the code and clears the lamp, and then i can look up the code on the internet. so it needs not to be very expensive. but people say that cheap code readers don't support the new "can protocol". does 2005 tc support this new protocol? i know 2006 tc does, but what about 2005 tc?

do you guys have any recommendation on a cheap code reader? or could you please tell me what my "engine problem" might be?

my gas tank cap is really weird, because no matter how hard you turn clockwise to close it, it is very easy to open it by slightly turning it counterclockwise.

thank you very much!
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#2 (permalink) Old 09-16-2009, 07:00 AM
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try getting a replacement gas cap.
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#3 (permalink) Old 09-16-2009, 09:44 AM
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Was it the CEL or the Maint Req'd light?

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#4 (permalink) Old 09-16-2009, 10:22 AM
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cheap code reader - scangauge... 150$. with Doc's panel turns into a very neat stationary tool.

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#5 (permalink) Old 09-16-2009, 11:10 AM
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Well first i would go to you mechanic and ask him to get you the code again, this way you know exactly what it is and can fix it now before worrying about permanent damage. and then look into a cheap code reader because they are a cool tool to have if you are big DIY person.

On that note, anything with the gas tank and stuff like that the first thing i would check is the gas cap, a cracked gas cap that isn't completely sealing could throw the CEL.



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#6 (permalink) Old 09-16-2009, 11:33 AM
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1. Autozone will read the codes for free and give you a printout of what the code means.

2. CEL's are 99.9% of the time something emissions related, there are other lights for engine damage stuff.

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#7 (permalink) Old 09-16-2009, 12:10 PM
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There is no Gas cap code on the tC. It might have been an evap purge problem. Check the green cap uder the hood atached to the intake as well as make sure all the vaccum lines are connected.

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#8 (permalink) Old 09-16-2009, 03:05 PM
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QUOTE (bluesciontc @ Sep 16 2009, 12:10 PM)
Quote:
There is no Gas cap code on the tC. It might have been an evap purge problem. Check the green cap uder the hood atached to the intake as well as make sure all the vaccum lines are connected.[/b]
no code but it will set off the light. had it happen to me before. can't say I felt dumber than when the service guy went "make sure that the cap clicks once or twice when you put it back on"




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#9 (permalink) Old 09-16-2009, 03:07 PM
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Yea its the EVAP code

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#10 (permalink) Old 09-16-2009, 03:26 PM
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QUOTE (bluesciontc @ Sep 16 2009, 03:07 PM)
Quote:
Yea its the EVAP code [/b]
oh ok regardless it throws a code lol... stupid gas cap




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