3800 service engine light

[puggz48]

I've got 99 gtp light just came on it has 96,000 miles on it the only mod i've done so far is cat-back exhaust 3 months ago just had tune-up about 5 months ago and change oil regulary i know it has something to do with emmissions but i don't know what to check any info would be appreciated.Thanks in advance.

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[framos242]

Go to Autozone and have them scan for codes. It's free. Be sure to write down/remember the code(s). Then, let us know.

 

[EmersonHart13]

Or find someone with a scan tool, but it helps to tell people where you live.

 

[puggz48]

I live in Mt. Greenwood Chicago

 

[framos242]

You're not that far from me. John lives in that area as well. But I don't have a Scan Tool.

 

[Sinister Drag Designs]

Originally posted by framos242@Nov 3 2005, 06:45 PM
You're not that far from me.  John lives in that area as well.  But I don't have a Scan Tool. 

[snapback]103023[/snapback]​

if u did a ubend removal with ur cat back, ill bet 10 bucks its ur rear o2 code, or do u have a thermostat its been getting colder it might not be heating up fast enough, my drilled 160 used to do that all the time when it was really cold its a 428 code, forgot what the o2 code number is

 

[puggz48]

went to auto zone they couldn't do it to dark for them, went to another local place they did it for me code P0304 they said it was a #4 misfire and reset it so hopefully it doesn't come back, but while i was there he said it sounded like my sc was going and told me to replace fluid and see if its any better so does anyone know how to do this!

 

[Sinister Drag Designs]

Originally posted by puggz48@Nov 3 2005, 08:36 PM
went to auto zone they couldn't do it to dark for them, went to another local place they did it for me code P0304  they said it was a #4 misfire and reset it so hopefully it doesn't come back, but while i was there he said it sounded like my sc was going and told me to replace fluid and see if its any better so does anyone know how to do this!

[snapback]103033[/snapback]​

wow, ok well that doesnt sound good, as far as i know the #3 and #4 are the weakest cylinders ive heard of this before and it might be a piston, anyone want to chime in

 

[framos242]

Originally posted by puggz48@Nov 3 2005, 07:36 PM
went to auto zone they couldn't do it to dark for them, went to another local place they did it for me code P0304  they said it was a #4 misfire and reset it so hopefully it doesn't come back, but while i was there he said it sounded like my sc was going and told me to replace fluid and see if its any better so does anyone know how to do this!

[snapback]103033[/snapback]​

Okay... check the spark plug and depending upon the condition (rich, lean or oil on it)... best case scenario is to change the plugs, wires or ignition coils. Maybe the injectors. Worst case scenario, you may have a chipped piston.

 

[EmersonHart13]

I can scan it for you, I have a scan tool. I live in Mt. Greenwood.