Right angle impact driver

I need an impact driver for removing seats in trucks (some have
slightly rusted bolts). Has anyone used a right angle impact
driver? If so, I would like your opinion as to whether it could be a
replacement for an air ratchet wrench? Is it the only right angle
impact driver on the market?


Thanks in advance for any information you might have.


You get what you pay for. If you really need a right angle driver
tool then I'd go and look into some of the high end Ingersol Rand
pnuematic tools. I'm sure that they sell an air ratchet that has
enough power to do what you want.

Battery dies in car.

Anybody got any ideas about where to start looking for a problem where a
good battery goes dead in a matter of a few hours setting my car? 1988
Taurus. Runs great, all fuses intact, just draws battery down real fast.

Thanks!

Put a digital multimeter on the battery. Watch the load. Start pulling fuses out until
the load goes away. Check whatever is on that fuse.

If the fuses are all pulled out and the load is still there, start looking
at anything on fusible links. Feel around for cabling that is warm.

A clamp-on DC digital multimeter makes this a lot easier, but you can always just
disconnect the ground strap and put an ammeter in series with it. The
clamp-on meter, though, makes it much easier once you've started to
track it down because you can just clamp it on any line and check the
current.

Note that most clamp-on ammeters can't handle DC, but an auto electrical
shop will have one right handy.

PS I would carry a jump starter in your trunk just in case your battery goes dead away from home.

Speciality Air Tools.

Red Hill Supply now offers an expanded selection of speciality air tools. There are many more air tools to choose from including: air nibblers, air hammers, air reciprocation saws, air cut-off tools and more.

Oxygen sensor

My 89 Chevy wagon with 307 engine has been using too much gas lately,
and the "check engine" light comes on every so often. While visiting
friends today, my friend has one of those diagnostic testers, so he
plugged it in. It indicated a problem with the Oxygen sensor.
He said that he heard something about a bad oxygen sensor causing the
engine to burn too much gas. Another friend said that he dont think
thats true, because the sensor only determines the vacuum advance.

Who is correct?

Also, how does a vacuum sensor work? I mean what does it do? From
what I can see, the one wire on it goes to the distributor (I think -
kind of hard to trace with all the stuff on this engine).
Having some electronics training, do these oxy sensors change in
resistance, or are they just an on + off device, or what?


There are a whole bunch of sensors that feed to the EMC to control
fuel and spark advance. Oxygen sensor senses oxygen (not enuff fuel
or too much) in the exhaust. This determines how much fuel is sent
through the engine. The oxygen sensor is a consumable item (like
tires) that needs to be replaced periodically. Your first friend
with the tester was correct - he pulled codes that indicated a fault
in the Ox sensor circuit. This does not automatically mean the
sensor is bad - it means that there is problem in that circiut
(although my money is on the sensor ). You can unplug the connection
and the engine will run in failsafe - meaning it will set the fuel at
a predetermined 'safe ' point. This is not a great long term plan -
replace the sensor.

Since computerized engine controlers, Vacuum advance is a thing of the
past. Ignition advance is controled by the values from various
sensors which are sent to the controler that continuously sets timing.
Your second friend is off.