Question about 1993 Toyota Camry V6

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No spark in 93 toyota camry 4cyl

Will not start, has no spark. Where to start?? coil,ICM or what and where?

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  • Anonymous Aug 24, 2008

    car was running suddenly stalled noe ignates but no start

  • Anonymous Mar 29, 2014

    car has hesatation after installing battery and spark plugs other wise runs good

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The Toyota 4 cylinder engines have a problem with the electronic units inside the distributor. You will need to replace the entire distributor to fix the problem. You can get aftermarket distributorsat ebay or similar sites for alot cheaper than the originals. It's an easy swap that will take about an hour to do if you are mildly mechanically inclined.

Posted on Aug 18, 2008

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  • Toyota Master
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Hi leo_meadows,

First thing to do is to check the easy things.... Open the fuse cover and make sure that the fuse for the EFI system is ok...Check that the main EFI relay is secure and fitted correctly.

Once you've done that, then check the connections to the distributer are all secure...Next make sure the plugs have spark, by pulling out one of the plug leads and with a screw driver inserted into the business end and making sure you don't touch the metal part of the tool, hold it about five mm above the engine block....Make sure that the car is out of gear with the park brake on....Get someone to turn the starter and see if theres a spark.

If there's still no spark you can replace the distributer or you can replace the igniter, which you'll find inside the same unit....Let us know how you get on and we can give you more help if you need it...

Regards Johngee10

Posted on Aug 31, 2008

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On one of my customers camry's, no spark. Hmmm new distributor, still no spark, hmmm. We took the dizzy cap off and turned over the engine. Rotor button no turning. WTF ?? Solution timing belt broken.

Posted on Apr 05, 2013

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92 Camry, Was running ok but some problem with won't start due to bad Fuel Pressure Regulator and dirty Choke/Throtle, I Replace FPR and clean the Choke, Then it has no spark, I then replace Cap and Rotor and new spark plug connection was OK, but still no spark. Anybody know what cause it?

Posted on May 24, 2011

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If you have wiring diagram,start at icm,if not,start at distributor cap and work ur way backwards

Posted on Aug 12, 2008

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2004 chevy impala start car runs about10 minutes then stalls new fuel pump when stalls cut out like running out of gas then don't start till cools off if electical to me would cut out instantly help


Not if ignition module . Electronic componets when heated up will act just like that . When it dies check spark, fuel pressure right away an find out what quit . Test don't guess . Videos on youtube on testing GM ignition system. Which engine does yours have ? Had option of two different ones . 3.4 an 3.8L . Ignition module or cranhshaft position sensor could be the cause .
Three dual tower ignition coils are mounted to the ICM, and are serviced individually. The ICM performs the following functions:
• The ICM supplies a power and low reference circuit to the CMP and CKP sensors.
• The ICM determines the correct direction of the crankshaft rotation, and cuts spark and fuel delivery to prevent damage from backfiring if reverse rotation is detected.
• The ICM determines the correct coil triggering sequence, based on how many 18 X ON-OFF pulses occur during a sync pulse. This coil sequencing occurs at start-up, and is remembered by the ICM. After the engine is running, the ICM will continue to trigger the coils without the CKP sync pulse.
• The ICM inputs 18 X and 3 X reference signals to the PCM.
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Pull plug wires off same coil when it dies , crank the engine , is there spark ? Ignition Control Modules ICM by Wells featuring Sgt Tech

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What energises coil pack


Its not what energizes the coil pack, but what controls it, and that is the ignition control module, or ICM. The power to the coil pack is or should be constant, anytime the key is in on or run. The power may be from the switch or from the engine computer, but it is constant.

The ICM takes this primary circuit current from the coils and controls the coils that way. When a coils primary circuit is cut by the ICM, a spark is delivered out top of the coil. The ICM does this when the computer determines spark is needed and sends a signal to the ICM.

A few other things it could be, too, causing no spark, like the crankshaft sensor, or the pcm, but often it is the ignition control module.

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94 camaro wont start...no firefrom the coil has new icm , coil , fuel pump


Check the icm plug with a led testlight for pulse while the engine is cranking. Test the wire connector with the small wires going into the coil for pulse.The v8 has a opti-spark distributor behind the waterpump that is prone to failure. It has the pickup inside it that tells the icm when to spark. If no pulse at icm distributor is bad. If pulse at icm but not at coil, icm or wiring between icm and coil is bad.The coil also needs pos.+ power on 1 terminal to operate. Be SURE to check the security light on the dash. If VATS [vehicle anti theft system] fails its usually within the 2 wires going from the key chip in the ignition tumbler to the body control module. Mine were purple and tan.Trying to start it with the wrong key can put it in lockout mode also. There are bypass modules available online for vats problems or you can even install a resistor in the wire to bypass the keychip part and the door alarms still work.

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No spark from new coil


Sounds like the problem lies in the profile Ignition Pickup (PIP) i.e Crank Sensor or in the Ignition Control Module (ICM), once the ICM gets the PIP signal, it starts to switch the Ignition Coil on, Once the Ignition Coil gets this switching signal, it starts to Spark away, I think you are not getting signal from PIP to ICM to get spark. I did a quick search online and if you do need to replace your Ignition Control Module this site looks like it has cheap prices, free shipping and great reviews http://www.buyautoparts.com/ignition-control-module.html

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Where is the location and what is the appearance of the spout connector on 1993 3.0 ranger xlt ..it appears that mine is missing..would this cause engine knocking under acceleration in a high gear ??


The SPOUT connector, if disconnected, would prevent the spark from advancing. So, you would have less spark knock if disconnected. You only disconnect it when you are running a test for codes.
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Disconnect the single wire in-line SPOUT connector or remove the shorting bar from the double wire SPOUT connector. (In engine comartment)
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The internal circuitry of the ICM will have one of two possible arrangements, push start or computer controlled dwell (CCD). The push start system allows for increased dwell, or coil ON time, when starting the engine. The ICM on this system determines when to turn the coil ON based upon engine rpm information. The coil is then fired, or turned OFF, whenever a rising edge of a SPOUT signal is encountered (Figure 5 ). The SPOUT signal, short for SPark OUTput, is a digital signal generated by the PCM providing spark angle information to the ICM. The SPOUT signal on the push start system controls only the firing of the coil. The falling edge of the SPOUT signal is ignored. The CCD system, however, does use both edges of the SPOUT signal (Figure 6 ). The SPOUT signal for the CCD system is same as in the push start except that the falling edge is now generated to control the time at which the coil is turned ON. The coil ON time, or dwell, for this system is thus entirely controlled by the SPOUT signal. The ICM does not internally determine when to turn the coil ON as it does on the push start system. It responds directly to the SPOUT signal it receives.
In the case that the SPOUT signal line opens from the PCM, the ICM will use the PIP signal to fire the coil. This results in a fixed spark angle of and fixed dwell.
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What should a multimeter read on a continuity test on the coil packs? i'm getting 1.9,1.7,1.7


The multimeter can read the resistance and if it is not open or shorted out, I'd say that your readings are in the normal range, comparing each resistance with each other + or - 10%.

I looked up the resistance readings on my online resource, but they did not list it specifically.
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I looked up the following on autozone.com:

There are 3 dual-tower ignition coils that are part of the ignition control module (ICM). The ICM contains coil driver circuits that command the coils to operate. The Powertrain Control Module (PCM) controls each dual-tower ignition coil by transmitting timing pulses on the ignition coil control circuit to the ICM for the proper coil to enable a spark event.
  1. Inspect the spark plug wires for proper orientation.
  2. With the ignition OFF, remove the fuel pump relay.
  3. Crank the engine and test for a strong spark on each cylinder spark plug wire using a suitable spark plug tester. Ground the companion cylinder spark plug wire of each cylinder when it is tested.

    If a strong bright blue spark is present on all of the cylinders, remove and inspect all of the spark plugs for proper torque, proper gap, wear, damage, and fouling. Replace the spark plugs if necessary. If there is no spark on any of the cylinders, test the ignition voltage circuit of the Ignition Coil Module (ICM) for an open/high resistance or short to ground, or test the ground circuit of the ICM for an open/high resistance, or a faulty ICM. The wire circuit resistance should measure less than 3 ohms. If there is no spark on any of the cylinders, or spark is weak or intermittent, test the IC circuit for an open/high resistance, or a faulty ICM. The wire circuit resistance should measure less than 3 ohms. If spark is present on one or more of the cylinders, inspect and test the spark plug wires for arching, cuts, rubbing on other components, and proper resistance. If all tests are normal, then the system is operating correctly.
    ---

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1 Answer

How do you remove the ignition coil


Each ignition control module (ICM) has the following circuits:
An ignition 1 voltage circuit A chassis ground An ignition control circuit for each cylinder A low reference circuit
The PCM controls spark by pulsing the ignition control circuits to the ICM to trigger the coils and fire the spark plugs. The PCM and ICM are internally protected against shorts to power and ground on the ignition control circuits.

The spark plugs are connected to each coil by a short boot. The boot contains a spring that conducts the spark energy from the coil to the spark plug. The spark plugs are tipped with platinum for long wear and higher efficiency.


Ignition Control Module (ICM) Connectors

248af41.jpg

Fig. Ignition coil locations 2001-2004 4.8L, 5.3L, 6.0L Engines



Removal & Installation
2.2L (L61) Engine
  1. Turn OFF the ignition.
  2. Remove the accelerator cable from the bracket.
  3. Remove the accelerator cable bracket bolt.
  4. Remove the accelerator cable bracket.
  5. Disconnect the ignition control module (ICM) harness connector.
  6. Remove the ICM retaining screws.
  7. Remove the ICM from the ignition coil housing.

To install:
  1. Install the ignition control module in the ignition coil housing.
  2. Install the ICM retaining screws. Tighten the retaining screws.
  3. Connect the ICM harness connector.
  4. Install the accelerator cable bracket.
  5. Install the accelerator cable bracket bolt. Tighten the retaining screws.
  6. Install the accelerator cable to the bracket.

2.2L (Ln2) Engine
  1. Remove the air cleaner outlet from the air cleaner.
  2. Remove the ICM electrical connectors (1) and spark plug wires (2).
  3. Remove the ignition coils bolts (3).
  4. Remove the ignition coils and ICM assembly.
  5. Installation is the reverse of the removal procedure.

2.4L Engine
  1. Disconnect the negative battery cable.
  2. Remove the accelerator cable from the hold down clip.
  3. Remove the cruise control cable, if applicable.
  4. Remove the bolt from the fuel line retaining clip.
  5. Disconnect the 11-pin harness connector for the ignition control module (ICM).
  6. Remove the bolts from the ignition coil and the ICM assembly-to-camshaft housing.
  7. Remove the ignition coil and ICM assembly from the engine.
  8. Remove the screws that retain the housing to the cover.
  9. Disconnect the coil harness connector from the ICM.
    CAUTION When removing the housing from the cover, make sure the ground strap stays in place.
  10. Remove the housing from the cover.
  11. Remove the screws that retain the ICM to the cover.
  12. Remove the ICM from the cover.

    9f8592c.jpg
    Fig. Removing the ICM from the camshaft cover

To install:

CAUTION DO NOT wipe grease from the module or coil if the same module is to be replaced. If a new module is to be installed, a package of silicone grease will be included with the module. Spread the grease on the metal face of the module and on the cover where the module seats. This grease is necessary for module cooling.
  1. Install the ICM to the cover.
  2. Install the screws that retain the ICM to the cover.
  3. Install the ground strap, if necessary.
  4. Connect the ignition coils connector to the ICM.
    CAUTION When installing the housing to the cover, make sure the ground strap stays in place.
  5. Install the housing to the cover.
  6. Install the screws that retain the housing to the cover.
  7. Install the spark plug boots and the retainers to the housing, if necessary.
  8. Install the ICM assembly to the engine while carefully aligning the spark boots to the spark plug terminals.
    CAUTION The ICM cover bolts must be installed using isolator washers with the rubber side facing down.
  9. Install the bolts that retain the ICM assembly to the camshaft housing after coating the bolt threads with LOCTITE, or equivalent. Tighten the bolts to 16 ft. lbs. (22 Nm).
  10. Connect the ICM 11 pin harness connector.
  11. Install the bolt to the fuel line retainer clip.
  12. Install the accelerator cable into the hold down clip.
  13. Install the cruise control cable, if applicable. Connect the negative battery cable.

Hope this help (remember comment and rated this).

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1 Answer

02 cavalier with no spark on cyl 2 and 3


did u replace the wires? You might have power but a bad connection to the spark plugs or just bad spark plugs. just a thought

Aug 17, 2009 | 2002 Chevrolet Cavalier Coupe

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