1999 Honda Civic VTiS starting problems

SOURCE: honda civic ek3 1999 model

I assume you mean low idle speed 500 rpm. Genarally a tapping noise comes from the valve train, and a knocking noise comes from the crankshaft connecting rods. The way that a mechanic will narrow it down is to use a mechanics stethoscope. You can get one pretty cheaply at an auto parts store. Put the metal end of the scope on a part of the engine and listen for noise. On the other hand, if your car is idling at 5000 rpm, it would also be making ALOT of noise.

SOURCE: idling problem when ac turned on honda civic lxi 1999

Hi,

To my knowledge (at least in my country), some Honda Civics have a compensator solenoid the pushes on the throttle that adjust the engine's RPM to its standard idling when the A/C compressor is activated. Technically, this solenoid is nothing more but a coil and a plunger. When the compressor runs, the same relay activates this solenoid and pushes the plunger forward increasing the RPM. Pls check/clean/adjust/replace as deemed fit and necessary.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

SOURCE: 1989 honda prelude enigne idles high then low irratic

I had the same problem on a Rover. There was a leak in inlet manifold that was caussing the problem.
To verify, spray some sealant to temporarily seal the inlet manifold .and the eratic idling should disappear for some time.
If it does, you know there is leak in inlet manifold which you can take of and refit with a new gasket.

SOURCE: 1999 Honda Civic EX fault codes 1366 and 1399

This code is not documented so the code reader is giving a false reading.
If the car runs OK and check engine light is not on, I would forget about it.

SOURCE: 1995 Honda Civic 5 speed manual will not shift

It could be that your syncro for the reverse gear is gone. Which would have to be brought to a tranny shop not a do it your self type of job.