Emissions wise, all I really did to my 1989 244DL before the test was clean my K&M air filter. Spark plugs and cables are two years old, distributor cap is 4 years old. Everything else that comes to mind, o2 sensor, cat, must be over 4 years old because that is how long I have had the car and I have not replaced. I drove about 60mph on the freeway a couple of miles to the test site and kept the car idling while I waited.

I guess what I am wondering, is if it is worth a shot at just changing spark plugs and wires, taking her on a good long drive to get her really nice and warm, and taking it back in for a retest. Oh, I also read a thread where someone recommended replacing the coolant temp sensor to reduce HC levels. Any tips on a quick fix to at least get my HC to drop a point or two so I can pass?

Here are the full test results:
15MPH 14.5% Co2 --- 0.4% o2
HC 117ppm (max 116) ---FAIL---
CO 0.26% (max 0.74)
NO 323ppm (max 791)

25MPH 14.7%Co2 --- 0.1%o2
HC 61ppm (max 91)
C0 0.13% (max 0.62%)
NO 92ppm (max 730)

Thanks,
Ryan