Thanks for all the tips. I couldn't find any vacuum leaks and I ended up taking out and cleaning the IAC motor, which instantly fixed my erratic idling problem. Ultimately I ended up adding about 750ml of 92% isopropel alcohol from the grocery store once I got down to 1/4 tank. It worked like...
I went to register my jeep today and I failed the emission test. It passed the equipment inspection and the Oxides of Nitrogren (NOX) test. It failed the Hydrocarbons and Carbon Monoxide tests however. The results are as follows:
HC: my truck = 3.16 standard = 3.00
CO: my truck...
