SOURCE: 1991 honda accord "no spark"
There is a relay mounted way up under the dash on the driver side. It is about 1"x1"x2" and it says Mitsuba on it. This is the PGMFI relay, sometimes called the main relay or fuel injection relay. It is very likely the problem. You can buy another one, or there was a bulletin on how to repair it. You need to take it out, pop the cover off, and resolder the cracked solder joints on the pc board that the relays are mounted on. Really not that hard if you have a little soldering experience. If not, just buy another one, about 50 bucks.
SOURCE: 1997 honda accord no spark, motor turns over
Could be the ignition coil or ignition module. Also check the ignition fuse.
SOURCE: 92 Honda accord no spark to the plugs I've changed
Check all of your grounds: There is one in front of the transmission leading from the negative wiring from your battery. Another goes from your battery wiring to the inside of your fender area. 10mm bolt. There is another on your driver's side motor mount to the valve cover. Check all relative fuses too.
or...
Main Relay : Up above your gas pedal. Above your cruise control computer. It will be a gray box or a brown box about 3" square. TO DIAGNOSE: Try to tap it while you try to start it, you might need a helper. If this is it... Don't
buy a new one, just pry the cover off of it and look close to find the
broken solder connection. Heat the faulty pin until the solder puddles
around it and your good to go. It's smaller than a human hair, look
close and you'll see the loose connection.
Testimonial: "I'm going to check that first thing in the morning.I really do appreciate your help with this the holidays are over.Thank you very much"
SOURCE: 1996 Honda Accord Rough Idle Even After tune up
Perform a valve clearance inspection and adjust if necessary. Tight or sticking valves will cause a misfire or rough running concern. Note: Perform valve adjustment when the engine is stone cold. 4cyl: INT 0.26mm EXH: 0.30mm (V6 engine are hydraulic and no adjust necessary.) Also check for a sticking or stuck open EGR valve. For diagnostic purposes only: Remove the EGR valve. Place a business card over the EGR passage and bolt the EGR valve back on. This plugs the EGR ports and if the misfire goes away the EGR valve is partially stuck open and is defective.
Check for low fuel pressure. Check for low compression. Check cam timing. Check for a weak ignition coil. Also don't over look the possibility of worn or broken engine mounts which cause excessive engine movement and engine vibration. -hope this helps
SOURCE: my honda oddessey 1995, my
Hi, since you've replaced everything else, about the only thing left is the crankshaft position sensor. This is the sensor the computer uses to time the spark signals. Because this sensor is expensive, I recommend you test it first to verify it's bad before replacing. I have pasted test procedures below as well as replacement procedure in case it fails the tests. You will need an ohmmeter for the test. If you don't have an ohmmeter, you can buy one for as little as $10, or maybe you can borrow one. You will also need a timing light if you replace the sensor. Please let me know if you have questions, and thanks for using FixYa. Fig. Fig. 2: The Crankshaft Position (CKP) Sensor rotor looks like a small gear in the lower distributor housing- CRV and 1995 Odyssey models 7. Check and reset the ignition timing as outlined below. Fig. Fig. 1: The inductive lead of the timing light is placed around the No. 1 spark plug wire; and the light is aimed toward the marks on the crankshaft pulley. Fig. Fig. 2: The red ignition timing mark on the crankshaft pulley is lined up with the pointer. The two small notches on either side of the red colored notch represent the plus (+) or minus (-) 2° increments. The white notch to the far right is Top Dead Center (TDC)
TESTING CRV and 1995 Odyssey Models
CRV models: The blue and white wires. The resistance should be 300-700 ohms.
1995 Odyssey models: The blue/green and blue/yellow wires. The resistance should be 700-1,300 ohms.
REMOVAL & INSTALLATION CRV and 1995 Odyssey Models
To install:
ADJUSTMENT CRV and 4-Cylinder Odyssey Models
If equipped with an automatic transaxle, place the shifter in Park or Neutral. If equipped with a manual transaxle place the shifter in Neutral. Make sure to apply the parking brake and block the drive wheels.
Odyssey models with 4-cylinder engines: centrally located on the passenger side, under the dash. The connector has two wires; one is brown with a black tracer, and the other wire is red.
See Figures 1 and 2
The white mark on the crank pulley is Top Dead Center (TDC).
2.2L/2.3L Odyssey 2.2L models: 13-17° at 650-750 rpm
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