check engine light- exhaust/timing/cam/engine 3 misfire.

[Cajun_Tiger_Hummer]

I brought the h3 into auto zone and this is what came up. Anyone know what this could be? It happen when i was driving on the interstate. H3 still runs fine. Idels smooth. Sounds good, just the engine light remains on.

 

[alrock]

Umm, do you have a code from when you went to Auto Zone? That would be helpful in the troubleshooting.

 

[Cajun_Tiger_Hummer]

Sorry, I don't have the codes. But the check engine light did go off this morning on my way to work. It could be that I left my H3 in the colder weather instead of in my garage for the first time this year. When I went to start it that morning it was idling a little rough b/c it was cold out. (50 degrees, lol, cold for Louisiana). I'll still bring it in this week and maybe get my plugs changed (have never changed them, 88k miles) and a once over done just to be on the safe side.

 

[Mr_Rich]

My GF recently had a CE light on her car and the local Autozone said they couldn't help diag the codes anymore; something to do with recent Calif. law. It figures....
Any preventative maintenance I would recommend would be to make sure you clean the MAF sensor and have a clean air filter. Those seem to be the two things that become critical (at 78K miles) for me.

 

[AlaskaDan]

Get a Scan Gauge. http://www.amazon.com/ScanGauge-Aut...TF8&qid=1383087214&sr=8-1&keywords=scan+guage Of the thousands dollars I've spent on mods, this is the most cost effective. Easy to hook up, and gives you tons of info on the performance of your hummer.