Question about 2001 BMW 325

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Mechanic stated I had a a/c leak from my high pressure sensor. Is that something that I can change myself?

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No, Removing the sensor awitch itself means opening a pressurerized system. It has to be evacuated and recharged when the switch is changed so let an A/C tech with all the safety swtuff drilled into his head do it.

Posted on Jul 29, 2009


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Posted on Jan 02, 2017


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Leak in "high pressure tube" causing A/C to not work

There are a couple of high pressure lines in your a/c system. The high pressure side usually hovers around 200-225 psi on warm days so the lines cannot be spliced. The system, by law, must be recovered and evacuated before any repair can be made. I'm sorry to tell you but this is not a repair that can be done at home in your garage unless you have a Freon recovery and evacuation machine at home.

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2004 Honda civic 1.7 vetch. Car blew a spark plug out of head destroying coil and shorting out eld sensor. Put in heli coil, new plugs, ignition coil and eld sensor. Car started and ran perfect until...

If you had a head gasket leak then there would be higher oil pressure but I think you would notice other signs of problems. Air and oil are typically sucked into the carburetor or air intake from the top of the valve cover. This is the Positive Crankcase Ventilation (PCV) Valve. You could try changing this valve. They are cheap and it is pretty easy to do yourself. In Honda's they can have problems leaking oil from this point and if yours is clogged for some reason, that may help (not sure).

As far as blowing a spark plug out, that is a pretty big problem. Immense pressure has to happen for the threads to fail, unless the spark plug wasn't screwed in all the way. I would say there is a mechanical problem in your engine somewhere. Either timing is off slightly or a valve isn't working correctly, or there is something in the cylinder that hit against the spark plug.

How did they repair the spark plug problem?

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I have a 2001 pontiac aztek, just had the head gaskets replaced two weeks ago, along with new plugs and wires, new water pump, new pcv valve and new heater hoses. I now have a massive oil leak. I called...

I don't have any idea of the exact location of your sensor. Generally though, they aren't difficult to find.
Most are located near the oil filter.
What I'd do in your situation is to actually look for the leak source. Your mechanic says it sounds like a pressure sensor but, he can't verify that without actually looking at it. That sensor is screwed directly into a major oil passage and it can leak very badly. Don't drive it like that or you can do serious damage to the engine. In doing the kind of repairs you mentioned, it's possible that someone may not have tightened up your oil filter (oil change is required after a big job like that). As I said, you need to actually look and find the leak source or you can't fix it.
Many pressure sensors can be easily removed using a common box wrench. Some however require using a socket specifically made to fit them. (you need to look at it to see which kind you have).
You should not be on your own with this. Especially after doing a major repair, any reputable shop should willingly offer to send someone out to look at the problem (free).
If you need to do it yourself, buy a haynes or chilton manual and the tools to do the job. Combined that should cost less than one hour labor at any shop.
Good luck, hope it's something small and easy!!!

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I have a 2001 f150 supercrew 5.4 and it just turned off out of no where and I have took it to a few mechanics and they can't find the problem. It turns on for a couple of seconds then turns off. The...

Out of the blue I would try a TPS, throttle position sensor. The MAF could be cleaned with Electronics cleaner and the other defects sound reasonable.

The extra fuel is flooding the sparkplugs and the extra fuel is throwing off the O2 sensors. I think you need to check the Intake manifold for leaks. The way the system works is the Sensors have a priority order. Some can only report and some can make changes.

You have a Sensor detecting a lean condition and it is pouring the fuel to the engine. A lean condition can be created when there is a Vacuum leak near a Sensor. Your mechanic should also check the fuel pressure at the Injector rail.

There is a system for regulating fuel pressure and measurement of this pressure will point to a bad fuel Regulator or electronic problem.

I hope you find this advice useful. You can check for Vacuum leaks yourself if you want to use a water spray bottle on the engine while it is running. When the RPM changes you will find your leak.

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Oil gauge on a 2003 gmc sierra is reading beyond 80, its all the way down. could it be serious? Just had oil change last week.

I'm assuming that this reading is at idle? The range for oil pressure is more like 30-40PSI at idle and 10-20 more at speed. The reasons your pressure is reading too high could be:

--The gauge or the sensor itself is bad (not uncommon)
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--The mechanic accidentally knocked off the wire to the oil sensor when changing the oil
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This is a relatively new car and if this problem developed immediately after the oil change I'd suspect the wrong oil was used or the wire to the sensor was knocked off. If the problem developed near the oil change, but not right after, I'd suspect it was coincidence and that there is a problem with the gauge. Go back to your mechanic.

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Hey have you tried disconnecting and re connecting the battery? my mitsi carisma startd doing that so i rang up dealer and aparently they do it when the computer thinks there is something wrong with the engine, so it enters slow mode (or turtle mode or something) so that minimal damage is done while you drive it slowly to yr mechanic. Could be complettly wrong tho. Good luck.

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