Check Engine Light

[kmoose44]

I have a 2000 Audi A4 1.8 with 83K. A couple of months ago my check light engine went on after I filled up the tank. I don't know which Octane # this was was it was the best you can get at the pumps in CT. I phoned the service center and they informed me to tighten the gas cap and cold start it a couple of times and this should go away. Lo and behold it did. This also happened the next time I filled up the tank. However - the light is back on again and I have not fill up the tank. I tried the tighten the gas cap trick and it did not work this time. Is there any insight to this problem prior to me taking my car into service?

[ctesla]

moose,
welcome to AF.
if this took care of it first time;
go buy a new cap (probably $10 at a parts store, $38 at dealer)
either way, the new gasket may seat, and no more light.

if this does not solve the dilemma, then it may need other maint.
(O2s probably)

hope this helps,
chris
nrt racing

[prospect2002]

Originally Posted by kmoose44

I have a 2000 Audi A4 1.8 with 83K. A couple of months ago my check light engine went on after I filled up the tank. I don't know which Octane # this was was it was the best you can get at the pumps in CT. I phoned the service center and they informed me to tighten the gas cap and cold start it a couple of times and this should go away. Lo and behold it did. This also happened the next time I filled up the tank. However - the light is back on again and I have not fill up the tank. I tried the tighten the gas cap trick and it did not work this time. Is there any insight to this problem prior to me taking my car into service?

hey did you ever get to fix your check engine light ? i have my engine light on and dont know wut it is. i changed my o2 senser and still on may be you can help me. thank you.

[kmoose44]

I bought a cap at the auto parts store and the light was off before I got home. Hopefully, it stays that way. Thanks for the advice!

Originally Posted by ctesla

moose,
welcome to AF.
if this took care of it first time;
go buy a new cap (probably $10 at a parts store, $38 at dealer)
either way, the new gasket may seat, and no more light.

if this does not solve the dilemma, then it may need other maint.
(O2s probably)

hope this helps,
chris
nrt racing

[kmoose44]

I bought a new fuel cap as advised and the light went off before I got home (w/i 10 mins).

Originally Posted by prospect2002

hey did you ever get to fix your check engine light ? i have my engine light on and dont know wut it is. i changed my o2 senser and still on may be you can help me. thank you.