![]() ![]() But the most common problem is a faulty mass airflow (MAF) sensor. There are numerous things that could trigger that P0171 trouble code including vacuum leaks, intake manifold gasket breaks, an air/fuel ratio sensor problem and others. Fix the new pot as you removed the old one. Remove the vacuum hose on the brake line and thread it into the new brake pot by hand. ![]() What should my mechanic look for?Ī: This is a very common code on Vibes. Find the bolts holding the wheel cylinder in place and uninstall them. I am planning a trip to Virginia in April and want to get this resolved. However, in the past couple of months the light has gone off, but then came back after three or four days after the following events: car wash, after a heavy snow, and most recently after sitting two days during a damp weekend. I cleaned the MAF and throttle, but the light remained on. The diagnostic code as tested by an auto repair store is P0171. It remained off for a week or so, and then came back on. Q: The check engine light on my 2007 Pontiac Vibe (51,000 miles) first came on last fall, which prompted me to have the PCM replaced as per recall notice. Is it an expensive repair for a dealership to get into radio and antenna? If it is, I would live without the AM band. It would seem that the am antenna (if the car has one) is disconnected or not working. The FM and the Sirius Satellite options work fine. ![]() A couple of months ago, the AM radio stopped working completely. Replacement of the hydro-boost unit is the common repair to correct this concern. Q: I have a 2007 Volvo S-80, with about 70,000 miles. Problem Description Power brake systems using 'hydro-boost' may leak power steering fluid from the hydro-boost unit located behind the brake master cylinder. As a backup plan, you may want to look into getting a solar battery charger to place on your dash. Ask your shop if anyone there knows this trick. Most techs will look for current draw in excess of 50 milliamps, but a super tech will check for voltage drops as a more accurate way to find problems. I bought a new master cylinder and bled the air out as per instructions that came with it. Since the battery is not vey old, that would go to the bottom of the suspect list. Either the battery is weak or there are more electric current draws than the dealer found. But four days is not normally enough to kill the battery. A: It is true that there are several circuits that must be kept alive, even while the vehicle sits. ![]()
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