bobaab

iTrader: (5)

well i FINALLY went to autozone to get the code checked, it turned out to be the catalytic convertor or something..the code was P0421. I took off the cat when i was going to put on my test pipe but i didnt have enough time so i ended up putting the cat back on. Now the CEL didn't come up immediately after that, it took about 3 weeks until it finally came on..so my question is, should i take it to the dealer? or should i just get it cleared? thx in advance!

bobaab

iTrader: (5)

anyone?

dsmtuner23

If you havent reset the ecu then that would be the first thing i would try, then if that didnt work id try dealer

blackmantis

iTrader: (1)

you may have damaged your o2 sensor when you were taking out the cat reset your batt...

what other mods do you have?? thet may be the cause of the cel.

bobaab

iTrader: (5)

cause i didnt even TOUCH the o2 sensor, i took off the bolts on the cat, and then put it back on..so i doubt that damage. the car runs fine too..so yea, ill try resetting the ECU. i just hate taking off the negative because the ****in car alarm goes on when i put the negative back on..it's so startling and annoying..but ill do it, thanks for your replies

dsmtuner23

I always hated to reset my old cars ecu for the same reason

pickleknock

just pull the #8 fuse from under the hood. that will reset the ecu.

bobaab

iTrader: (5)

oo thanks a lot man..that'll be much easier for me

bobaab

iTrader: (5)

ok, pulling out the #8 fuse didnt reset the ecu so i just pulled the neg, put it back on and hear that nice alarm go off. lol.

anyways, that CEL is off! seemed like it was just a misread that the ECU had a while back..not really sure what the problem was but there seems to be no problem.

sdhotwn

iTrader: (2)

yeah I didn't have much luck with the #8 fuse either. I'm letting it sit right now.. I also pulled the other engine fuse which is a 15 amper at the end of the row.. that didn't get it either. Letting it sit, and we'll see. Otherwise alarm and negative terminal here I come!

bobaab

iTrader: (5)

well my CEL is back on, i gotta get that checked again and see if it's the same code.

sdhotwn

iTrader: (2)

the stupid MIL fixes don't work.. I'm in process of sorting that out.

KAOTIK

iTrader: (1)

after reseting your ecu should your car run a little bit funny cause i got that p0421 code and i reset my ecu by unpluging my battery and then when i plugged it back in my car was idling at 500 rpms and then when i put my car in park it would just shut off, i was wondering if it is supposed to be like that for a little while or what?

bobaab

iTrader: (5)

ive never had that happen..my car runs perfectly fine still.

KAOTIK

iTrader: (1)

well after i reset my ecu cel light came back on reset my ecu again but car is running like **** again what should i do