Hi:
I am having problems with my '91 Honda civic DX when I drive for a while, then I stop the engine for 5-10 minutes to do some shopping or whatever...and then try to start again. It doesn't start at all. But if I wait another 5 or 10 minutes and i try again, usually starts. I don't have any idea what the problem is. It never happens in the morning when the car is cold. The
battery is new. Please, if you can help me, i will apreciate it

thank you in advanced

gunyvw

a lot of honda products and acura's around 89 thru 91 suffered from bad ignigters a jumpstart almost always worked when you couldnt get the car started... which made figuring this problem out more difficult... they had a recall at one time on them...
replacement of the ignigter should do the trick
hope this helps

damuho

When the problem occurs, listen for a clicking sound under the dash on the left end when you turn the ignition to the ON position (without starting). If you don't hear a click, you may have a bad main relay. When you hear a click, your car will likely start fine.

The main relay is a common problem with your model year Honda. You can actually fix it just by reworking all the solder on the board.

bdb

I have been reading and have had all the same problems, I too checked the ground and the timing, everything is ok. I have also replaced a lot of the same parts. What should I try next?

labman

Coils on their way out sometimes quit working first when they are hot. If you have power to the coil, but no spark, the coil is bad.

CroCivic91

What exactly are "a lot of the same parts"?

Main Relay, Igniter Unit and an Ignition Coil?

bdb

I have replaced the Fuel pump, the ECU. I am getting spark, I am getting fuel, the ECU comes on, and blinks once. The main relay is coming on, you can here the click. The timing is ok. The grounds are ok. My injectors are working fine. I guess my next question is what could there possibly be left. My only thought is there a valve or another sensor between the injectors and the intake?

labman

I saw your post here earlier today and didn't reply because I don't have much more to help. If you have spark at the spark plugs, and gas coming out the injectors, there isn't too much more to keep it from starting. A long shot is the timing being off 180 degrees. Turn the engine to where the mark on the crankshaft pulley lines up with the 0 on the scale. Pull the cam cover and distributor cap. Check # 1, next to the pulley, and #4, next to the transmission. One will have both cam lobes up away from the valves, and one will have the exhaust lobe just past the valve and the intake lobe ready to open the intake valve. The rotor must point toward the one where the lobes are away from the valves.

bdb

Timing has checked out fine. Does anyone know if the MAP sensor will keep it from starting, if it has gone bad? My other question is, how about the EACV?

labman

If the timing is dead on, checked with a light, it can still be 180 degrees off. Firing the plug between the exaust and intake strokes will not start the car.

Usually a bad sensor will only make the car run poorly.