Car sat for about two weeks over the holidays. Drove around town upon return without incident. This morning 4F outside. Started right up with one glow cycle. But, in the early going, it was extremely sluggish....trouble even getting to 30 mph. After 10 miles or so, things improved considerably...could get up to highway speed. But still not as responsive as normal. And to top off my morning the horn doesn't work.

FYI leaking fuel thermostat was replaced a couple of months ago.

I will drive it home another 10 miles in a few hours, so we'll see.

Any ideas?

__________________
14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 159k miles
06 E320 CDI "Rutherford", Black on Tan, 178k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 75k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife