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Website Publishing

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Welcome...This page is a catchall for interesting information on a myriad of subjects that may help some people.

AUTOMOTIVE:

CAR BATTERY DIES OVERNIGHT:   You may have a vampire drain condition going on;  GPS draws about 170 millamps  which is enough extra to drain your car battery 1 or 2 nights . 

  TO isolatet the circuit that is draining your car, get standard mulitmeter (volts amps ohms), put it on the 10 amp setting (or you'll damage your meter), take off negative battery cable on car battery and hook the ampmeter between the cable and the neg terminal on the battery itself,  get a fuse puller (or needle nose plyers ; be careful not to break fuses), and pull one at a time starting with lowest amp fuses first , when the amp reading falls below approx 50 millamps ( it will look like .05 amps on the meter), then you have found the circuit that  has the problem, now put fuse back in and check one by one each device that is on that fuse..    ours read .22amps which is 170 millamps too high until we unplugged the GPS>>

Other reasons that car batteries drain overnight can be:

1.  lights left on (obvious)  check all dome lights , glove box lights, rear door lights inside and outside .

2.  Faulty brake switch ,, occasional sticking can quickly drain a battery in a few hours, because the brake lights remain on.  Lights left on may be hard to see in the daylight.

3.  Ignition switch old and worn, some cars when you turn of the engine, some little dash lights may remain on, which means part of the system is still on, that can also drain you down over a few hours or overnight.

4. Short in heater motor.

You can get your car scanned by a garage (not the autoparts store type of free miniscan) this is the full scan on the expensive machine Probably cost you $20 for such a scan.

CAR HEATER WORKS POORLY OR NOT AT ALL:
 Check heater fan comes on, check all vacuum hoses for wear both in dash controls, and external heater switch to firewall, also vacuum supply from engine *Usually from power brake assist, insure that ext heater switch is opening fully ( you can take any vacuum line and plug it into ext vac inlet in ext heater switch, you should see it move fully from normal closed to fully open towards the vacuum inlet; if you do not see the movement and you are sure the vacuum is there.. the ext switch is either jammed or bad).    If the car is old and you get heat with the above test method.. you might consider leaving the alternative vacuum source connected in the test mode (YES jerry rigged) for the winter and re-connect them as normal in the spring?   The usual alternative source of vacuum is simply the one going into the firewall that is supposed to give the interior dash controls the vacuum that comes back out to operate the ext switch.   In any case don't degrade any important vacuum lines,  make sure they are in good cond and not leaking , as it can degrade fuel economy if you are not careful about where you take the vacuum from.

If the switch is working with alternative vacuum source, start looking very closely at the vacuum lines to from firewall, ext switch, and vacuum source and also inside the dash controls.  if the ext htr switch is good and activated open, and you still get little or no heat; check the both water hoses going into firewall (to heater core) are both hot (not lukewarm; if one is hot and the other only warm then the heater core may be clogged, you can disconnect both heater hoses at firewall and with LOW pressure of no more than 18psi (normal house water is 45 psi) back flush the heater core to remove debris and slag (corrosion by product).    

If both heater hoses are hot.. the core is not clogged and you then need to start looking at the heater "door" that blends the heated air with the outside air, sometimes they jam.. and need a little oil.. you might if possible depending on model, drill very lightly a small hole just above the hinge point and inject some oil.. then work the temp lever back and forth hoping to unjam the door.. other methods (if car is old )are to get some kind of wire attached to the blend door and push pull it manually to adjust heat level. 

 IF you are getting steam into car you have a heater core or hose leak.  bad.. fix it quick or disconnect heater hoses altogether.. or you won't be able to see or breathe.

  

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