Question about 1991 Chevrolet S-10 Blazer

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Stopped 1991 S10 engine and could not start again. Suspected coil problem because no spark present from coil when turning ignition. Replaced both ignition module (under distributor) and the coil. Still same behavior... It won't start and still not getting a spark from the main terminal on the ignition coil.

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Check to see if the coil spins when you crank the motor the other thing is the crankshaft sensor is bad

Posted on Nov 12, 2009

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No fire to plugs on 1991 ford aerostar 4.o replaced crank sensor,coil pack and switch what else is there


If the engine cranks but has no spark, you need to know if the coil is getting voltage and a ground signal. The coil gets power from the ASD relay and a fuse.
Have you checked the compuer for trouble codes ?

Jul 08, 2012 | 1991 Ford Aerostar Extended

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Hello Ryan, start by checking the battery terminals and cables. The cables on these Camaros are known to corrode and cause intermittent starting problems. The next time it stalls & won't start, check for spark. If no spark, the ignition module, pickup coil, or ignition coil is likely the problem. This model did not have a crank sensor. If spark is present, check for fuel pressure. I hope this information is helpful.


10_8_2011_9_36_27_pm.jpg

Sep 19, 2011 | 1991 Chevrolet Camaro

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I have a 1991 honda accord I started it like I always do to let it warm up. It started right up like it always does. I went inside to let it warm up. I came outside and it wasn't runnung. I tried to start...


Please see my tip at http://www.fixya.com/cars/r6223989-ignition_coil_doesn_t_spark . These are generic instructions--specific instructions are pasted below from Autozone.com. If you get stuck, please get back to me.

Use a test light to check for power to the coil on the black wire with a yellow stripe--see procedure below and other tests you can run. You will need a volt-ohm meter to run most of these tests.

The system used on 1990-95 Accords and 1989-95 fuel injected Preludes uses the distributor components to signal the engine computer. The ECU triggers the spark through the igniter unit and coil. This spark timing is controlled by the computer as an integrated function of the fuel management system. The distributor contains a crankshaft angle sensor and a No. 1 Cylinder Top Dead Center (TDC) sensor. Using these and other electrical inputs, the computer controls spark timing electrically.

1990-91 ACCORD
See Figure 6

  1. Remove the distributor cap, rotor and shield.
  2. Label and disconnect the 4 wires from the igniter unit.
  3. Switch the ignition ON . Use a voltmeter to check for voltage between the black/yellow wire and ground. Battery voltage should be present. If the voltage is not present, check the black/yellow wire between the igniter and the ignition switch.
  4. Check for voltage between the white/blue wire and ground. Battery voltage should be present with the ignition ON . If voltage is not present, check the white/blue wire from the igniter to the coil and test the ignition coil.
  5. Turn the ignition OFF . Check for continuity in the yellow/green wire between the igniter and the ECU.

jturcotte_639.gif


Fig. Fig. 6: Terminal identification on 1990-91 Accords

  1. Check the blue wire for continuity between the tachometer and the igniter.
  2. Check the resistance between the terminals which connect to the blue and white/yellow wires. It should be between 1,100-3,300 ohms. If not, the igniter must be replaced.
Coil test:
1990-91 ACCORD

See Figure 16
  1. The ignition coil is contained within the distributor. With the ignition OFF , remove the distributor cap.
  2. Remove the screws securing the black/yellow wire and white/blue wires from the terminals. The black/yellow wire is connected to the primary positive terminal and the white/blue wire is connected to the primary negative terminal.
  3. Measure resistance between the terminals. Resistance should be between 0.6-0.8 ohms.
  4. Measure the resistance between the primary positive terminal and the secondary terminal. Resistance should be 12,800-19,200 ohms.
jturcotte_640.gif

Fig. Fig. 16: Coil terminal designation on 1990-91 Accords

  1. All test conditions must be met. If any test condition is not satisfied, the coil must be replaced.

jturcotte_641.gif

Dec 27, 2010 | 1991 Honda Accord

1 Answer

The Jeep has set for about 6 months. A week ago: battery dead, jumped it but would not start. I replaced the coil, jumped it and it started instantly and ran better than it has in years. Yesterday, I...


Check to see if you have spark at the coil. If you have spark at the coil and no spark at the plug, you probably have a bad distributor cap and/or rotor.

If there is no spark at the coil, you need to find out if there is voltage present at the B+ terminal of the coil.
No B+ could be anything from a bad ASD relay to a broken wire or burned fusible link.

If B+ voltage is present at the coil, the "NO-SPARK" condition could be caused by anything from a bad Crankshaft Position Sensor (CKP) to a bad Ignition Control Module (ICM) To a bad Electronic Control Unit ((ECU) - AKA Engine Control Module)

Nov 02, 2009 | 1989 Jeep Grand Wagoneer

1 Answer

A 1991 accord -- the car was running (being driven) when the engine stopped running. There is power to the coil but no spark. I have replaced the distributor cap with a new one -- still no spark.


dizzy cap?? 91?? try changing the ignition module ,not sure where it is on this model it will be either under the coil or inside the distributor

Nov 01, 2009 | 1991 Honda Accord

4 Answers

2001 Ford Focus stopped running while i was driving and wont start. Makes a churning sound but no power is going to engine. I changed the ignition coil, still wont turn on. Any suggestions?


Can you explain more so I can help. What do you mean still wont turn on, engines doesn't start or starter motor doesn't turn. Have u taken out a spark plug and connected it to the cable put the end of the spark plug to a ground and make someone turn on the engine for a few seconds you should see some blue sparks. Carefully use gloves. If no sparks, spark plug is bad next thing to check instead of putting the spark plug in the cable put Philips screwdirver put the screwdriver near a ground not touching about one inch make someone turn the engine for a couple of second you should see the spark jumping from the screwdriver to the ground, If there are no sparks ignition coil or spark plug cables are not good. But u say u changed ignition coil so maybe your cables are not good. There is a connector near the ignition coil disconnect it and turn ignition switch on measure the voltage you should have in between 12vdc + or - .5 vdc if no voltage present there is a blown fuse, Check for it

Jul 23, 2009 | 2001 Ford Focus

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