Top 10 1993 Honda Civic 4 Door Questions & Answers

The PCV valve is located directly under the fuel rail on the driver's side, right behind your valve cover. Should be very easy to spot if you know what it looks like and you're looking right in that location.

Hope this helps :)

Sounds like you might have a caliper that is stuck and is not fully disengaging. If it is in the rear then you may have a bad rear caliper. Twoo things you can try. One is to crawl under the ca and adjust the tension two nuts on the emergency brake line. If that does not resolve the problem then remove the back tire and try to spin the drum or rotor whichever you may have. If it does not spin then try adjusting the e brake cable more if it still does not respond then you need to do a brake rebuild. Also does it pull while it is dragging? If it is then you will need to rebuild the brakes no matter what.

Check the cables and connector for the speed sensor. It's located on the transmission towards the firewall. The connector has three pins on it. I just had to replace mine, went to the junkyard and paid $3 for the connector, because it was corroded. If the cables are clean and OK then replace the speed sensor. It ranges in price from $65 to $105.

the only thing that is related is the d4/rough gear changing
speed/ rpm malfunction is caused by your speed sensor on the trani (common problem) change it

Buy a Haynes manual (about $20) from an autostore; you're going to need it for this task

I THINK this is correct. Not a great pic, but I hope that it helps you. This is supposed to be "typical" for a 93 Civic.

Pull the rubber trip reset pin out slowly so all you see is the hole & the shaft. Take a long tin-tie (about 5 inch) & fish it inside the speedo to the needle & carefully bring it back counterclockwise when its back at least to "2-3 O'clock" hold it & turn your switch to coil...the needle will go back to zero. keep the tin-tie in your coin box if ever it happens again!

Hi Friend:

#1) I'm Putting a Diagram of your Firing Order up.1st.

Clockwise 1--3--4--2 On Distributor Cap

#2) Your Ingnition Timing , Make sure engines temp is at normal operating temperture, #3) Pull out Engine Service Connector, which is located behind RIGHT SIDE KICK PANEL .

#4) Now take a Jumper wire and Jump the BROWN WIRE with the GREEN AND WHITE Wire Terminals on the Connector.CAUTION: DO NOT JUMP THE 3PIN Data Link on Vehicles 1993 and Up.

#5) Now Connect Timing Light There is a Mark on your Bottom (Crankshaft Pully) Its Red in Color,NOTE: you might have to clean this up before even beginning anything.!

#6) But Look Down to lower Crankshaft Pulley the Timing Light should be Lined up to the RED Mark.Your Timimg Sets at 16 Degrees Before Top Dead Center and Idle should be 670 RPM

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Try this first, and lets see what happens. Turn key to on, but not start, then off. do that about four or five times, then try to start. See if it starts, runs, then dies. Let me know. Have you had fuel pressure tested at all? If it doesn't start and run for a short while at least, take air intake hose off at throttle body intake, open throttle and spray a good shot of WD-40 into throttle body, then try to start. If it starts, you have a fuel delivery problem, maybe fuel pump or plugged filter would be first to check. Just because you hear the pump, doesn't necessarily mean it's getting proper pressure to run. Let me know what happens when you try this, and we'll go from there.

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