EGO NOT SWITCHING - 1989 Ford Mustang

An eGo starter kit is two complete vape pens including; two small tanks, two rechargeable batteries and a USB charger. There should be some atomizers in the package as well.
Flip the tank over, unscrew the bottom, dribble the e-liquid down the side of the tank being careful not to fill further than the middle tube. Screw the bottom back on, screw on to the battery then press the button to vape. When the vapor production drops off or it tastes funny change the coil in the bottom of the tank, should be a week or two.

I think it is all about popularity and powerful battery, eGo has gained good reputation among vapers what makes it very demanded on the market. Talking about batteries for vaping in general, I highly recommend to check this one https://gypsyvapes.com/evod-twist3-battery (Vape pen battery with 510 thread and eGo connections).

Exhaust Gas Oxygen or otherwise known as the O2 sensor ford used this term up until 1994 when the federal regulations mandated industry standard terms and the implementation of the enhanced computer diagnostic system known as OBDII your O2 sensor is staying above .5v more than it should could be running rich,fouled plugs, plug wires excess fuel or a bad o2 sensor

The 172 code on my Snap On Modus Edge says "172 - EGO NOT SWITCHING, LEAN EXHAUST, BANK 1"
Then I also get the 176, says same thing only Bank 2.. so I have almost 90k on my '94 Crown Vic, just serviced the trans, just changed my fuel filter and cleaned the MAF sensor. I have new O2 sensors, it only requires 2, I need to put them in and see if the issue goes away.

p0172 means bank 1 of your engine is rich. Need more info on vehicle make model year ect. Could be a sticking fuel injector or on a single bank engine (4 cyl or inline 6 cyl) too much fuel pressure or mass airflow malf.

Are you sure it's the right 02 sensor and it should set other codes again also are you sure you didn't unplug anything else and check the catalytic convertor to see if there's a big temperature difference one may be clogged or the egr is stuck closed is there a very rich exhaust? What size motor?check spark plugs and wires or boots for cracks and the coIL or packs we need precise info on your car so please post back with it

May be plugged catalytic converters, you need to get the exhaust dropped to tell, if when the exhaust is dropped it runs better then the cats need replacing

it is possible you have a leaking injector on that bank. how does the vehicle run?

Have u checked for vacuum leaks or poss leaking EGR valve? use carb spray around the upper intake manifold where it bolts to the lower manifold, spray vacuum lines where they are connected to the engine vacuum ports, the idle speed will change if u hit a leak, as far as the EGR valve goes see if it gets hot at idle, if it does it is leaking, if all checks ok replace the O2 sensor, but i suspect u will find a leak at the upper intake plenum.