Question about 1998 Ford Explorer

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Ignition has no spark in 1998 ford explorer

My 1998 ford explorer will turn over but the ignition has no spark. Ihave changed the coil and crankshaft sensor

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  • Anonymous Mar 26, 2014

    battery saver is off re start vehicle

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  • Expert
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Check for power at the coil wiring harness

Posted on Mar 03, 2009

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  • Master
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At the base of the distributer is small ignition module board. Remove it and take it into autozone for testing.

Posted on Mar 03, 2009

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03 ford explorer has orange spark from plug wires


check both the disributor cap. and your rotor arm.

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4x4 v8 1998 dodge truck won't start


well if ur not getting spark and u changed all of the ignition components lets think about the computer in order for the ignition to work you have crankshaft position sensor that fires the fuel injectors and the spark change that and if still nothing then change the camshaft postion sensor that sensor tells the computer that the 1 piston has came all the way up and it tells the crankshaft sensor to do its thing

Feb 21, 2013 | 1998 Dodge Ram 1500 4WD

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1998 v8 eddie bauer ford explorer does not start at all


Does the engine turn over? If the starter is turning the motor, then your issues are going to be no fuel, no spark. If not fuel means that your fuel pump, fuel pump relay, fuel filter is bad (common issues first). If you have fuel and no spark then your coils are bad, crankshaft position sensor, cam shaft position sensors are bad. Are there any check engine lights on? If so read the codes with a scanner. If not, then you are going to have to check electrical with a multi-meter to see what the problems may be.

Oct 01, 2011 | 1998 Ford Explorer

1 Answer

1998 Ford Explorer, 4.0 SOHC No Spark. Engine will crank but it won't start. Replaced the Crankshaft Sensor, Coil Pack, & Spark Plugs. Still no spark. What next?


You are at thhe right trail what controls spark is coil pack crank sensor sparkplugs and plug wire but the most important is power . I mean 12 volt connections and ground This includes checking fuses you need a simple volt meter doesnt have to expensive or fancy just to pick up 12 volts let start with fuses in the engine juction box (there not mark to what it belongs to) make sure none are open. especially fuse 19 and 24 , next go to the crank sensor make sure the tabs are snuggly on now to the coil pack there is a red and light green wire this comes from ignition and feeds 12 volts at the coil pack measure that voltage is it 12 volts if not correct it this is from ignition switch ( you can make a tool that feed 12 volt with a wire and a fuse in series and attatch it to battery and the primary wire this is known as hot wire) next go to the ECM wiggle the wires see if that get a connection going if not go back to the ICM here are the wire you are to measure the tan light green, this is from ECM and it is pulsed it measure 5vlts to 0 volts switched then measure the tan orange the same thing 5 volts to zero,then tan white again 5vlts to zero. any one of these 5 to zero fails you fix is the ecm

Aug 21, 2011 | 1998 Ford Explorer

3 Answers

Engine light is on, flashes when driving above 100 Km


stop by local parts store (Autozone,Advance, etc) and have them do a free fault code test. They can print out a list of faults and clear the codes

Jan 02, 2011 | 1998 Ford Explorer

1 Answer

1998 durango 5.2 wont turn over. changed computer,dist,crank and cam sensors,changed ignition module. no spark to coil...has ignition pulse... any ideas? thanks!


Crankshaft position sensor? Did you check for a trouble code??? I would have to say at this point there is a code stored in memory.

Nov 23, 2010 | 1998 Dodge Durango

1 Answer

Firing Order diagram for 2006 Ford Explorer


Hope this helps. The ignition coil:
  • changes low-voltage pulses from the PCM to high-voltage pulses.
  • fires 2 spark plugs simultaneously.
  • has 3 transformers.
    • One transformer fires the spark plugs for cylinders 1 and 5
    • One transformer fires the spark plugs for cylinders 2 and 6
    • One transformer fires the spark plugs for cylinders 3 and 4
Spark plug wires:
  • carry high-voltage pulses from the ignition coil to the spark plugs.
The spark plugs:
  • change high-voltage pulses to spark at the gap, which ignites the fuel and air mixture.
The firing order is 1-4-2-5-3-6.

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Jun 06, 2010 | 2006 Ford Explorer

1 Answer

My 1997 Ford Explorer 5.0 V8 is not getting spark before the coil


wiring cracked and making intermittent connection.Change wiring to coil pack.

May 28, 2009 | 1988 Chevrolet Suburban

1 Answer

Timing the cams and crank with a belt


  1. Note: Electronic Ignition engine timing is entirely controlled by the PCM. Electronic Ignition engine timing is NOT adjustable. Do not attempt to check base timing. You will receive false readings.

The CKP sensor is used to indicate crankshaft position and speed by sensing a missing tooth on a pulse wheel mounted to the crankshaft. The CMP sensor is used by the COP Integrated EI System to identify top dead center of compression of cylinder 1 to synchronize the firing of the individual coils.
  1. The PCM uses the CKP signal to calculate a spark target and then fires the coil pack(s) to that target shown in Figure 51. The PCM uses the CMP sensor not shown in Figure 51 on COP Integrated EI Systems to identify top dead center of compression of cylinder 1 to synchronize the firing of the individual coils.
  1. The coils and coil packs receive their signal from the PCM to fire at a calculated spark target. Each coil within the pack fires two spark plugs at the same time. The plugs are paired so that as one fires during the compression stroke the other fires during the exhaust stroke. The next time the coil is fired the situation is reversed. The COP system fires only one spark plug per coil and only on the compression stroke.

    The PCM acts as an electronic switch to ground in the coil primary circuit. When the switch is closed, battery positive voltage (B+) applied to the coil primary circuit builds a magnetic field around the primary coil. When the switch opens, the power is interrupted and the primary field collapses inducing the high voltage in the secondary coil windings and the spark plug is fired. A kickback voltage spike occurs when the primary field collapses. The PCM uses this voltage spike to generate an Ignition Diagnostic Monitor (IDM) signal. IDM communicates information by pulsewidth modulation in the PCM.
  1. The PCM processes the CKP signal and uses it to drive the tachometer as the Clean Tach Out (CTO) signal.

2.5L V6

The ignition system consists of an ignition coil, spark plug wires and spark plugs.
The crankshaft position sensor signal is the basis for ignition timing calculations. The alternating voltage signal from the crankshaft position sensor is digitized by a pulse former within the powertrain control module. This digitized signal is then used to position the closing time of the primary circuit of the ignition coil.
Ignition timing is determined by the powertrain control module in response to engine operating conditions based on stored data tables or maps. Once ignition timing has been determined, the powertrain control module interrupts the current to the primary circuit of the ignition coil thus triggering the ignition spark which is supplied to the cylinders through the spark plug wires and spark plugs.
The ignition coils are triggered by the powertrain control module in pairs (cylinders 1 and 5, cylinders 4 and 3 and cylinders 2 and 6) sending one ignition spark to the firing cylinder and one ignition spark to the corresponding cylinder on the exhaust stroke. This ensures that any unburnt fuel residues remaining in the cylinder on the exhaust stroke are re - ignited to provide cleaner exhaust emissions.
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2.0L 4 cynder

The ignition system consists of an ignition coil, spark plug wires and spark plugs.
The crankshaft position sensor signal is the basis for ignition timing calculations. The alternating voltage signal from the crankshaft position sensor is digitized by the powertrain control module. This digitized signal is then used to position the closing time of the primary circuit of the ignition coil.
Ignition angle is determined by the powertrain control module in response to engine operating conditions. Once ignition angle has been determined, the powertrain control module interrupts the current to the primary circuit of the ignition coil thus triggering the ignition spark which is supplied to the cylinders through the spark plug wires and spark plugs.
The ignition coils are triggered by the powertrain control module in pairs (cylinders 1 and 4 and cylinders 3 and 2) sending one ignition spark to the firing cylinder and one ignition spark to the corresponding cylinder on the exhaust stroke. This make sures that any unburnt fuel residues remaining in the cylinder on the exhaust stroke are re - ignited to provide cleaner exhaust emissions.
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Integrated Electronic Ignition System The Integrated Electronic Ignition (EI) System consists of a crankshaft position (CKP) sensor, coil pack(s), connecting wiring, and PCM. The Coil On Plug (COP) Integrated EI System uses a separate coil for each spark plug and each coil is mounted directly onto the plug. The COP Integrated EI System eliminates the need for spark plug wires but does require input from the camshaft position (CMP) sensor.
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Apr 05, 2009 | 1998 Ford Contour

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