Question about 1992 Jeep Cherokee Sport

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No spark after changing ignition - 1992 Jeep Cherokee Sport

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  • Mark Mar 13, 2011

    after changing ignition what? switch/ coil? wires? cap? rotor?

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Coil might be wired backwards.

Posted on Mar 14, 2011

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Why my 94 Astro van will not fire


this generation of gm vehicles is easy to troubleshoot. the engine needs 3 things to run: compression, fuel, and spark. since you mention fire, i assume you have no spark.

disconnect any random spark plug wire and connect the end to a hei spark tester. crank engine and observe for spark. if you have no spark, disconnect the center terminal of the distributor cap and use the hei tester in the same manner. spark means cap and rotor bad or bad plug wireset. no spark means make more checks.

check for battery voltage and good ground on distributor. check for open or shorted ignition module or ignition coil windings. if power and ground is present and ignition coil tests ok, check for ignition pulses at coil primary. if you have no ignition pulses feeding the coil, change the distributor.

with that generation of vehicle, the ignition system will operate without help from the computer. don't even troubleshoot the guts of the distributor, if you change the cap, rotor, and anything else, it will be the same price as a remanufactured distributor, and might not fix the problem. if you troubleshoot a low volrage related issue (no pulses, shorted or open circuit, unstable timing, etc), change the whole thing.

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If you have no spark, changing plugs will not help. Did you check the ignition coil to make sure that it is not open? Is the coil receiving power when ignition is turned on?

Best bet is to get a hold of the electrical schematic for car and check out the ignition circuit for culprit.

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Car cranks but wont start? No spark. Changed ecm relay no help. Ignition harness is good. No fault codes. Battery is good. changed ignition relay, no help. I think its the ECM but need more info to spend...


Yes, the ECM is the last thing to replace after all other possibilities. No spark could be bad ignition coil, bad Ignition Control Module (controls the coil circuits for spark), bad plug wires, the crank and cam sensors (for ECM to determine spark timing).

Check the ICM -it can be tested at a parts store. If good, check the crank sensor.

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could be the ignition coil (you can check for a spark on the ignition coil by holding the power cable coming out of the ignition coil close to an unpainted metal part of the frame. if the ignition coil has spark, then change your spark plugs (if the tips look burnt, crusty or oily), spark plug wires and distributor/coil packs.

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How to change spark plugs on 5.4l


Your van uses a coil on plug ignition system. Use the following procedure to change the plugs.

  1. Remove the engine cover and air cleaner assembly.
  2. Disconnect the ignition coil electrical connector.
  3. Remove the ignition coil mounting bolt.
  4. Remove the ignition coil.
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1 Answer

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I had the same problem, I was the Igniter in the distributor, controls power to fuel pump and spark to plugs, I changed coil, fuel pump only to find out it was so simple, try changing the igniter in dist.
Good luck

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My 2004 Verona had factory installed "NGK BKUR6ETB" regular spark plugs which I replaced at 30,000 miles. The 2005 model year is supposed to have Iridium spark plugs. To replace the spark plugs: 1. Remove plastic top engine cover. 5 nuts 10mm socket. 2. Unplug connector from each ignition coil. qty 6. 3. remove 2 hold down bolts per ignition coil. 10mm socket. 4. remove ignition coil, lifting straight up. 5. Spark plug is now accessible, use deep well 5/8 spark plug socket to remove.

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