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I have an invacare perfecto 2 oxygen concentrator that I have been using for my oxygen feed to my glass blowing torch I turn it on it starts blowning air then quits followed by a loud ringing sound and stays that way till I shut it off and back on just to repeat the same thing can I fix it myself or any suggestion what it might be

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Posted on Jan 02, 2017

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SOURCE: 2001 BMW 330ci Blower Fan quit working

sounds like the resister for the fan is failing. it is located under the dash on the duct work for the blower (fan). you will see two wires going to it. unscrew the bolts or screws that hold it in and replace it with a new one. it should work fine after that.

Posted on Sep 02, 2009


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I am having trouble charging an invacare portable oxygen concentrator in a 12 volt adaptor ( cigarette lighter plu in) without it blowing fuses

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Driving one day,car died,never start again,change plugs,distributor cap and rotor,car is getting spark and gas

In order to run an engine, you need the following:

1/ spark at the right moment

2/ Adequate compression

3/ sufficient fuel of good quality

4/ oxygen at a ratio of 14.7 parts of air to 1 part of gas at sea level

Unless the crankshaft is frozen or broken, the engine will run when cranked when these conditions are present.
There are *many tests to try to make this happen but I caution you: Do not mess with the gasoline; I got 2nd and 3rd degree burns doing exactly that when trying to start a recalcitrant engine... blow torch kind of experience that I am not eager to repeat (and I was a professional mechanic)


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1996 ford escort has no dash or parking lights.

tracing short circuits can be tricky you need a good electrical knowledge and a bit of luck.what items are not working when the fuse has blown? concentrate on these items first follow the wiring back from these loads looking for chafed wires . if you cant see anything put in a fuse and switch the affected loads on one at a time until the fuse blows when this happens youll know which circuit to concentrate on.

Mar 27, 2009 | 1996 Ford Escort 4 Door

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The canister vent valve and the oxygen sensors get their power from this fuse(along with some other things) wich means you could have a bad component or a wiring problem anywhere between them and that blown fuse. You can try to unplug each component and try it again. just a suggestion - try the oxygen sensors first as they have a heater circuit inside them wich can short out. The pink and black wire going to the vent valve should be 12 volts with a good fuse in that circuit. Get a circuit breaker from radio shack or napa to go into that blowing fuse so you don't keep having to throw all your fuses out after you blow them. The po440 means you have a small leak in the evap system but you need to repair the blowing fuse first wich could also have something to do with the vent valve- they go bad very often.- good luck

Sep 14, 2008 | 2001 Pontiac Grand Am SE

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2003 Ford Focus ZXT

Oxygen sensors do go bad, but having the code there doesn't necessarily mean a bad sensor.

In your case P2195 means your front oxygen sensor (on the exhaust manifold) read a lean mixture for more than 25 seconds on 2 consecutive drive cycles (2 times you turned your engine on, then off).

Ford does have a service bulletin out for that code and the code usually indicates you have a vacuum leak somewhere around the engine.

If your car drives well, I wouldn't worry about it right now. It's not a condition that will leave you stranded in any way, the worst that can happen is decreased fuel mileage.

I'd run the car for a while and see if the light comes back on, and if it does, how often. It may never light up again. If it does light up, and/or if you notice any increased fuel consumption, erratic idle (engine feels like it wants to stall at idle), or any other driveability issue, i'd start by looking for a vacuum leak before anything else...

Other possible causes could be
-Bad Oxygen sensor (possible, but i wouldn't jump to this)
-Bad injector(s) (unlikely, you'd probably notice in the way the engine runs)
-Fuel pressure issues (you'd notice this too)
-Bad engine computer (very unlikely)

A vacuum leak can a lot of times be pin pointed easily:
Start the engine and let it idle. Get a propane torch (the kind used to solder plumbing pipes) and open the gas valve slightly (without lighting the torch). Pass the torch around vacuum lines and connections (they run from the intake/throttle body to the transmission, brake booster, PCV valve etc...) When the torch comes around where the leak is, the engine speed will increase noticeably.

There are pumps available to check for this but I find this method to be quite easier, cheaper and more reliable.

Aug 28, 2008 | 2003 Ford Focus

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