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Jeep Cherokee Grand Cherokee Engine and Performance Problems
I recently took my jeep in because the engine began vibrating really bad during cold starts (in the morning) and after hot starts (?) after it had been running for over a half an hour, turned off then started again within say 15 minutes. When it would begin to vibrate the jeep would almost appear to be on the verge of stalling but never did. I ended up taking it in to a dealer and after looking at it determined it was the timing belt (mechanic told me it was set ten degrees ahead) and reset it. At first everything seemed fine but after 3 weeks now the vibrating seems to be returning (but no way near as bad as it was before). I'm also noticing that fan seems to be always running (though the heat gauge never goes over half) and what sounds like a pump (water pump maybe?) constantly working. I'm looking for some opinions on what could be going on before I take it back in again. My jeep has about 115,000 miles on it and I've been good about the maintenance. Like I said earlier I'm not really mechanically inclined so I apologize in advance if this seems to not make sense. Any advice is greatly appreciated.