Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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pretty bad
Typical Repair Cost:
No data
Average Mileage:
63,500 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
2004 Nissan Sentra AC / heater problems

AC / heater problem

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2004 Nissan Sentra Owner Comments

problem #1

Dec 012009

Sentra S 1.8L

  • Automatic transmission
  • 63,500 miles


I've been having this problem with my car for about 2 years now and it is worse than ever now. When it first started, the heat in my car would work when the fan level was on 1 or 2, but if I put it on 3 or 4, heat would only come out when accelerating. Otherwise, cold air would come out when the heat was on. I had a mechaninc friend that fixed this a couple times for me for free, so not sure what he did. But now, the heat only works every other time I turn my car on, regardless of the fan speed. It seems like every other time my car is turned on it's either hot air one time, then the next time, cold air is blowing, even when accelerating. Wit winter coming, I won't even be able to defrost my windows...

- , Philadelphia, PA, canada

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