Q: Is it true that modern diesel engines can get damaged by repeatedly driving short distances? Something about a clogged filter that won’t regenerate because the engine hasn’t warmed up. I thought diesels were more robust than gas engines. Strange that a 21st century automobile engine would have such a design flaw.
—M.Y., Schaumburg, Ill.
A: Have you noticed that diesels don’t belch as much black smoke as they used to? In fact, you don’t see any smoke. This is due to the particulate filter in the exhaust system. It traps the soot then cleans itself after the engine has warmed up and been driven for 10-15 minutes. If you don’t do this at least every week or two, the filter will clog up and require expensive replacement. If you only use the vehicle for short trips, get out on the highway occasionally. Sure, you waste some fuel, but it is cheaper than a new particulate filter. Design flaw? Nope. Emission control device.
Q: In your Nov. 10 baiduhai column there was a question regarding a recall on leaky power steering hoses in 2006 Buick Lucernes and a recall notice was listed as NHTSA Campaign No. 06V105000. I had my 2006 Lucerne scheduled for service today for the recall on the ignition switch issue and I showed this article to the service advisor and they advised that the campaign listed for power steering hoses is not one that they even recognize based on the campaign number and there is no issue with the car. I am a little confused and wondered if you could you possibly clarify this for me to confirm if this is a valid recall?
—G.X., Chicago
A: Yes, that is a valid NHTSA recall number and you can use it to see the recall information on the NHTSA website, http://www.nhtsa.gov. It is not General Motors’ campaign number, which is 06026. The recall also covers the 2006 Cadillac DTS. Owners may contact Buick at (866) 608-8080 or Cadillac at (866) 982-2339.
Q: Recently you answered a question about a TPMS problem with a Honda Accord. I recently had the same problem with my 2009 CRV. When I took it to the dealer the diagnostic test showed low tire pressure plus some error codes. The service attendant asked if there was anything left plugged in all the time. Yes, a phone charger. He said if it’s a cheap one that’s probably causing the problem. It was a cheap double charger. Realized after he said it that the light came on when two of us were using it. Went back to my single charger and have not had a problem since.
—D.S., Danielsville, Pa.
A: Thanks for sharing your solution, which we are happy to pass along. Strange things can happen to autos. Some years ago, when we worked in a shop, we got a car whose horn would rhythmically honk along with the turn signals. It turned out to be a bad electrical ground.
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