20 Most Recent 1991 Honda Civic - Page 8 Questions & Answers

have to remove the center pad of the steering wheel(should be 2 6mm bolt holding it on)on the back side of the steering wheel. once you have that off there should be (i think) a yellow wire that wire goes to the horn contact switch. replace that contact.

Not that I know of.Are you getting spark to the plugs when it won't start, and how long do you have to wait for it to start ?

The expansion valve is located after the receiver-dryer, just at the firewall, before the evaporator. murf427

does it crank if not a relay is bad if it cranks I would look for a shorted wire or wires

Your neutral (clutch) safety switch needs adjusted or replaced. murf427

Does the engine always turn over? murf427

Might be a problem with the key switch. Can you jumper the relay to make the pump run and start the engine ?

Weakening fuel pump or clocked fuel filter(s)

Blue smoke on decel is due to valve guide wear, you will need the head pulled and the valve guides replaced.

Best will be to remove the distributor and to use as a sample.

The cylinders are probably washed down with fuel and it doesn't have enough compression to start. You need to also check to see if it is getting ignition spark. There are several thing it may be. The quickest thing you can try is let it sit overnight and then in the morning push the gas pedal to the floor and try starting it to clear flood it if it is not starting due to being flooded and cylinders being washed down with fuel.You should pull out a spark plug and see if its wet with fuel. If it is remove all the plugs and dry them out and maybe squirt a very small amount of oil down each cylinder to help seal the rings to bring up the compression. Do not get carried away with putting oil in the cylinders so you dont hydro lock the engine.

if your car is still using a carburetor, clean the carburetor first. If it is already Fuel injected, clean your MAF sensor.also, it is ideal to replace your fuel filter everytime you do a change oil (normally this is done every 6 months)

bummer,gotta be the 3rd syncro,has to come apart to fix it.

1991 will have a throttle cable for this car i would have thought ,just not familar with this what is obviously a american market model and possibly even a californian spec so this is way out of this europeon mechanics league .But if it does have a idle control valve then its possible that the ECU is faulty try measuring the voltage going to the valve ,4 wires and it reverses the current to go backwards or forewards ,so two wires go one way and the other two make it go the other way ,use a multi meter and see what you get ,also check the brake servo as if a diaphragm leak the it will **** in air making it idle high