Check engine light

[SHOGHOST]

I just put on an intake on my 99 and now my check engine light is on, has anyone encountered this or know why it might have come on. I also got new mufflers put on right before it went on but it came on the next day after i did both of these things, but the car seems to be running fine still. headbang

 

[MilTownSHO]

Maybe you knocked a sensor loose?! shrug

 

[SHOGHOST]

would it be the sensor that was in the airbox then? headbang

 

[SHOZ123]

If you went somewhere and they read the code they could tell you what is wrong. Many places do this for free.

 

[SHOGHOST]

so you dont think headbang i need to have the dealership do it

 

[SHOGHOST]

I got it figured out i took the negative terminal off and put it back on and it reset the computer finger

 

[MilTownSHO]

SHOGHOST:
I got it figured out i took the negative terminal off and put it back on and it reset the computer finger

On OBD-II that will not reset the computer, the code will still be stored and if the problem is still there the light will come back on. If it does take it to Autozone or Advance Auto and they will read your codes for free!

 

[Wess]

What type of intake?

 

[Chis Randolph]

Whenever you do an intake mod or any mod to a sho I'm told you should reset your computer especially if it's an air intake mod. The computer just needs to relearn and get used to the new and improved airflow.

Chris

 

[Funmart6]

What if you just have the sax and the mousetrap removed, should the computer be reset? shrug

 

[stephen newberg]

When I pulled my sax and put on the cold air intake, I did not reset the computer, nor did I get a check engine warning.

pax, smn

 

[SHOZ123]

I reset my PCM at least once a week. Found out the car runs faster on the OEM base programming.

If you pull the battery cable off it will erase any and all PCM codes and wipe out the data tables of learned data.

I have not gotten any codes from messing with my intake except the times I left the MAF or IAT unplugged. Or the time the MAF fell off.... headbang

 

[mholhut]

Some folks with the 98 and 99 SHO's get sporatic CE lights from doing the open cone filter installation. The problem doesn't seem to manifest itself with the 96's and 97's.

Disconnecting the battery will clear the CE light until the problem returns, if it does. It will also allow the car to "learn" new table parameters with the new intake... but like Paul said, these cars seem to run best on the stock programming.