If you haven't had a load test done on your charging system, With a Voltmeter and engine running set meter to DC volts and read across the battery terminals. It should read 13.5-14.5 volts. If below this then suspect your alternator, or blet drive tensioner, or slipping drive belt.
If OK then I would assume a parasitic electrical drain - for example, one of the interior lights is on when it should be off. A trunk light maybe or a short somewhere. Something is not turning off when it should.

It is possible you are trying to replace the wrong sensor. I say this because usually after resetting a code, if the problem has not been fixed the code will return a short time later. I don't believe two new sensors would be bad

hello, i had this same problem with my 96 honda accord lx. Your car has 2 oxygen sensors, the bank 1 is usually the one that is on your cat, try replacing that one and see if that helps.

1. Check the FUEL SYSTEM PRESSURE
1993 Honda Civic 1.5L FI SOHC 4cyl
The Fuel System Pressure

40-47 PSI (Pounds per Square Inch)Remove the ground cable from the negative battery post and also remove the fuel tank filler cap. Slowly release system pressure at the fuel filter and cleanup spilled fuel. Remove the Banjo bolt and install a fuel pressure test gauge. Reconnect the battery ground cable and proceed to start the engine and allow the system pressure to stabilize. While the engine is at idle, block off/pinch the number (1) vacuum line to the fuel pressure regulator and visually verify the fuel pressure reading on the test gauge.If the fuel pressure system isn't in the specifications, replace the fuel pump.

2. A margin fuel pump could draw excessive current and damage the fuel pump main relay.

A. Are you asking " How to clean the fuel injectors " by adding a chemical into the gas to clean them.

Use Techron Chevron Fuel Injector to clean the fuel system.

B. Or did you want to clean the oil sludge deposits inside the engine ( like the oil pump and their oil galleries ). Use the Gunk MF3 High Mileage Motor Flush - 32 fl. oz.
See this site for their reviews.
http://www.amazon.com/.../B000AME4V4

Confirm that the compressor is turning on when you switch the ac to on while looking at the front of the ac compressor. If I understand correct, it does not stall when the car is running and not being driven and you put the ac on?

First, check your compressor. Make sure it is not locking or seizing up when you turn you a/c on. TXT "more" for further info.www.lightdeal.co.uk

When the a/c clicks on the computer is suppose to raise the idle-speed to compensate for the additional load the compressor is adding.So maybe it's not, which means it could also be a sensor not signalling the engine to increase the idle.Do a diagnostic and see if there's code.

is the vehicle automatic (CVT)?

here are two ways to gain bounty quickly in Need for Speed. The first is very commonly known as the 'Bus Stop Glitch. To pull this glitch off, you have to get to the bus station which is located almost right in the middle of the map. http://www.lightdeal.co.uk/

It sounds like an automatic to me ,and it could either be a transmission problem or engine losing power.It might help to have a diagnostic test done and see if there's a D.T.C.( code num.) signalling a problem.It can be done for free at Advance Auto. or other.

The O2 (oxygen) sensors (there are two) are located on the exhaust pipe; just upstream and downstream of the catalytic converter.

Hello Mike,

For your vehicle’s application (1993 Civic Del Sol, 1.5L) I am only showing one oxygen sensor on this vehicle. The Walker Part number is 250-24099.

If you have any further questions or concerns please contact us and we will be happy to help.

Walker Pro (www.walkerproducts.com)

First step - have the check engine light or stored fault codes scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' for more assistance.

Possible Causes of Engine Hesitation or Stumble:

Dirty fuel injectors (cleaning the injectors often fixes this)
Dirty air filter (change filter)
Dirty / clogged fuel filter (change filter)
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires

1) No auto parts stores have the ability to read the codes. They can't go older than 1996 (not a normal OBD 1 or 2 connector). Also the check engine list doesn't stay on constantly, it goes on and off as it wants to.
My husband (a mechanic of 20 years) read the codes and they are:
- 12 - Crackshaft positioning sensor (will be changed soon)
- 4 - EGR valve (has been bypassed)

2)
Fuel Injectors are fine, there is no missfire
Air filter is clean and good
Fuel filter has been checked and is clean except for very minor trash (that's normal)
The car turns on, so the MAP sensor is fine (he took it out and the car wouldn't start)
TPS was checked and is fine
MAF has been cleaned and is fine
Fuel Pressure has been checked and is perfect
Vacuum leak is possible and has already been thought of, will be checking that tomorrow
Gas is good

3)
Spark plugs are Brand New
Plugs wires are good and dry
All 3 ignition coils are good

You would never catch the hare then. ha !

If the noise goes away when operating the brakes, then suspect / check these items; loose caliper mounting bolt / hardware, faulty / loose brake pads inside the brake caliper.

First step, check the vehicle for fault codes to see if there are any sensors were involved to the malfunction of the engine.

1.Local auto parts stores such as Autozone ( not in California) or Advance Auto parts will scan and retrieve any diagnostic trouble codes ( dtc ) stored in the powertrain control module for free of charge..

2. Amazon.com has the code reader for $20.00 dollars + shipping

3.Re-post the dtc's in here " answer question " for further assistance.

Note: we need the dtc's to identify the sensor, there are a dozen different sensors to operate the car.

Visit this site and see all the different sensors.

http://www.freeautomechanic.com/car-engine-sensors.html

Navigate to this site and see the code reader
http://www.amazon.com/.../ref=sr_1_1

Never replaced the fuel filter? Start right there and install a new filter - and then replace regularly - according to the owners / maintenence manual recommended intervals, usually every 24-36k miles.
Recognize the fuel filter is the in-tank model - located inside the fuel tank. It's a simple task - you access the fuel filter from on top - through an access door / panel inside the trunk.

Try the many on-line auto parts sources, such as; www.autopartswarehouse.com, www.partsgeek.com and www.rockauto.com for the replacement parts. For example, they (RockAuto) list the fuel filter from around $29.00 for your vehicle (BECK/ARNLEY part # 0433015)