Question about 1985 Ford F350

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'72 Ford F100 will not start...

The timing is NOT off. We changed the ignition module, changed the ignition coil, changed the spark plugs [no wires have been crossed], and changed the module in the distributor. The battery holds a charge. The carburator is getting gas. The truck turns over but will not start. If any of you have any ideas, please let me know as soon as possible. Thanks.

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Are you getting 12v power to the coil while the truck is cranking as well as ignition in on position? which engine is it?

Posted on Oct 09, 2008

The pin that goes through the distributor shaft may be sheared off remove the cap look under the rotor button

Posted on Sep 06, 2008

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Are you getting spark to the spark plugs? you could have a separated wire that looks fine on the outside and not allowing current to the coil

Posted on Jun 25, 2008

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I know what your problem is....its a ford!!!!

Posted on May 18, 2008

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No. spark will not start


check see if coil getting power.if no check ignition fuse if yes getting power at ignition coil.either ignition coil is bad or thick film module on distibutor faulty.ignition timing way off or you have worn distributor cap and rotor. worn spark plugs and wires.

Jul 10, 2013 | 1991 Ford F250

1 Answer

2007 ford edge changed the plugs at 100000 now getting engine codes Po351 & PO354 is is this a PCM reset problem


Hi there:
- P0351 Ignition Coil A Primary/Secondary Circuit Malfunction


- P0354 Ignition Coil D Primary/Secondary Circuit Malfunction


Both fault codes refer at Ignition COil issue; this code is saying the white wire from the PCM to the ICM is getting high voltage on it.you need to do a very good visual inspection on the wiring to the ICM including the connector into the ICM. Also focus on the wiring to the ignition coil; if that all is good there is either a PCM problem or the ICM is acting up. In this LINK could find details and description.


Additionally pay attention at this information, that exlain the enhanced ignition system uses the crankshaft position (CKP) sensor in order to provide a timing input to the control module. Ignition control (IC) spark timing for each cylinder is based on this input. The control module provides the ignition timing signal to the ignition control module (ICM) to control the ignition coil. Each timing pulse detected by the ICM allows the ICM to energize the ignition coil. A large secondary ignition voltage is induced in the secondary coil by the primary coil. This high voltage is switched to the correct spark plug by the distributor.


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Aug 23, 2012 | 2007 Ford Edge SE

1 Answer

4 cylder engin 2002 ford ranger plug wire die gram in order they go


Ignition CoilsTwo ignition coil packs are used for the 2.3L twin-plug engine (6007). The two ignition coil packs are triggered and timed by the powertrain control module (PCM) (12A650). Each coil pack contains two separate ignition coils (12029) for a total of four ignition coils. Each ignition coil fires two spark plugs (12405) simultaneously, one spark plug on the compression stroke and one on the exhaust stroke. The spark plug fired on the exhaust stroke uses very little of the ignition coil's stored energy. The majority of the energy is used by the spark plug on the compression stroke. Since these two spark plugs are connected in series, the firing voltage of one spark plug will be negative with respect to ground, while the other will be positive with respect to ground.2_13_2012_3_20_33_pm.png

Here is the Ford diagram..

2_13_2012_3_22_31_pm.png

Other details could be find HERE.

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Feb 13, 2012 | 2002 Ford Ranger Regular Cab

2 Answers

1979 ford f350 has no spark. replaced coil, plugs, ignition module and still no spark. please help!


1979 ford 400 Drove inot shop did a cam shaft change and put all back together and no spark! put new coil , distributor, eletronic brian , wires ,rotor, cap, and check wire harness for brroken wires . still no spark? ANY IDEAS??

Jan 12, 2011 | 1979 Ford F 350

1 Answer

Hey there,i have a 1991 msuatng LX with the 2.3L ho engine running an 8 plug head. it sounds like i may have a misfire of some sort or my timing may be out but im not sure how to tell, could someone give...


Insert each wire on the proper terminal of the ignition coil. Ensure that the coil boots are fully seated and both locking tabs are engaged. The terminals are identified on the ignition coils. Install wires as shown in the illustration. The 2.3L firing order is 1-3-4-2 for both ignition coil assemblies.

Distributorless Ignition System In the distributorless ignition system (DIS), all engine timing and spark distribution is handled electronically with no moving parts. This system has fewer parts that require replacement and provides a more accurately timed spark. During basic operation, the EEC-IV determines the ignition timing required by the engine and a DIS module determines which ignition coil to fire.

Components
The distributorless ignition system (DIS) for the 2.3L twin spark plug engine consists of the following components:
  • Crankshaft timing sensor
  • DIS module
  • Two ignition coil packs
  • Spark angle portion of EEC-IV
Crankshaft Timing Sensor
The crankshaft timing sensor is a dual hall effect magnetic switch, which is actuated by the dual vane cup on the crankshaft pulley hub assembly. This sensor generates two separate signals, PIP (profile ignition pick-up) and CID (cylinder identification). The PIP signal provides base timing and RPM information, while the CID signal is used to synchronize the ignition coils. Initial timing (base timing) is set at 10 degrees BTDC and is not adjustable. Ignition Coil Packs
Two ignition coil packs are used for the 2.3L dual plug engine. The two ignition coil packs are triggered by the DIS module and are timed by the EEC-IV. Each coil pack contains two separate ignition coils for a total of four ignition coils. Each ignition coil fires two spark plugs simultaneously, one spark plug on the compression stroke and one on the exhaust stroke. The spark plug fired on the exhaust stroke uses very little of the ignition coils, stored energy, and the majority of the ignition coils, energy is used by the spark plug on the compression stroke. Since these two spark plugs are connected in series, the firing voltage of one spark plug will be negative with respect to ground, while the other will be positive with respect to ground. Refer to thePowertrain Control/Emissions Diagnosis Manual for additional information on spark plug polarity. DIS Module
The main function of the DIS module is to switch between ignition coils and trigger the coils to spark. The DIS ignition module receives the PIP and CID signals from the crankshaft timing sensor, and the SPOUT (spark out) signal from the EEC-IV module. During normal operation, PIP is passed on to the EEC-IV module and provides base timing and RPM information. The CID signal provides the DIS ignition module with the information required to switch between the coils for cylinders 1 and 4 and the coils for cylinders 2 and 3. The SPOUT signal (from the EEC-IV) contains the optimum spark timing and dwell time information. The dwell time is controlled or varied by varying the duty cycle (duration) of the SPOUT signal. This feature is called CCD (computer controlled dwell). Therefore, with the proper inputs of PIP, CID and SPOUT the DIS ignition module turns the ignition coils on and off in the proper sequence for spark control. CID is also sent to the EEC-IV micro-processor to allow for Bank to Bank fuel control. Failure Mode Effects Management
During some DIS system faults, the Failure Mode Effects Management (FMEM) portion of the DIS ignition module will maintain vehicle operation. If the DIS ignition module does not receive the SPOUT input, it will automatically turn the ignition coils on and off using the PIP signal. However, this will result in fixed spark timing (ten degrees BTDC) and a fixed dwell time (no CCD). If the DIS ignition module does not receive the CID input during engine cranking, random coil synchronization will be attempted by the module. Therefore, several start attempts (cycling the ignition from OFF to START) may be required to start the engine. If the DIS module loses CID input while engine is running, the module will remember the proper firing sequence and continue to fire to maintain engine operation. Dual Plug Inhibit
Dual Plug Inhibit (DPI) is a function of the EEC-IV that is only used when the vehicle is being started at temperatures -7° C (20° F) and below. During engine cranking, the EEC-IV will only fire the spark plugs on the right hand side of the engine. When the engine has started, the EEC-IV will send a signal to the DIS module to start normal dual plug operation. Ignition Diagnostic Monitor
The Ignition Diagnostic Monitor (IDM) is a function of the DIS module. The DIS module sends information on system failures to the EEC-IV which stores the information for diagnostic self test. The IDM signal also is used to drive the vehicle instrument tachometer, and test tachometer for system

Nov 19, 2010 | 1991 Ford Mustang

1 Answer

1988 F150 cranks / turns when trying to start but will not fire. it gets fuel, coil , ignition module changed, ingition unit on steeing wheel under dash has also been changed. acts like no combustion is...


no combustion or no compression? timing chain broke? you did not supply enough info about what you tested.or how. remove a spark plug wire if you dont like shcks take an old spark plug two alligator clips and a piece of wire attatch to the hex metal body of this old plug and connect the wire you just removed run the starter while watching for strong!!! spark.you can have a weak spark and no start=bad coil.i think but maybe wrong that this vehicle still uses aignition module located somewhere on the fender.find a parts locator maybe at the library. this module was aproblem for decades.have fun.

Feb 14, 2010 | 1988 Ford F 150

2 Answers

No spark


Possibly the crank sensor.

Jun 02, 2009 | 1996 Chevrolet Silverado 2500

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.
---------------------------------------------------------------
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.
------------------------------------------------------------------------------------
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

2 Answers

94 Aerostar won't start. No fire


1 Inspect Battery Damaged or faulty battery and/or connections. here is a list of things u can check hope this helps Shaun 2 Inspect Coil - Ignition Damaged or faulty ignition coil or ignition coil circuit. grey_line.gif 3 Inspect Fuel Filter Clogged or dirty fuel filter grey_line.gif 4 Inspect Fuel Injector Pressure Regulator Faulty fuel injector pressure regulator or circuit. grey_line.gif 5 Inspect Fuel Pump Improperly functioning fuel pump or circuits. grey_line.gif 6 Inspect Wireset Damaged, worn, or deteriorating spark plug or coil wire(s). grey_line.gif 7 Inspect Control Module-Ignition Faulty ignition control module or circuit. grey_line.gif 8 Inspect Solenoid Switch Damaged or faulty solenoid switch or solenoid switch circuit. grey_line.gif 9 Inspect Starter Damaged, worn, defective, or faulty starter or starter related circuit. grey_line.gif 10 Inspect Neutral Safety Switch Damaged or faulty neutral safety swittch or circuit. grey_line.gif 11 Inspect Fuse Corroded, burned, or shorted fuse may be interupting power source. grey_line.gif 12 Inspect Fusible Link Corroded, burned, or shorted fusible link may be interupting power source. grey_line.gif 13 Inspect Battery Cable Corroded, broken or poorly connected battery cable. grey_line.gif 14 Inspect Spark Plug Wire Loom - Performance Improperly adjusted or worn/malfunctioning carburetor. grey_line.gif 15 Inspect Distributor Cap Loose or cracked distributor cap grey_line.gif 16 Inspect Distributor Cap And Rotor Kit Loose, cracked, or worn distributor cap and ignition rotor. grey_line.gif 17 Inspect Fuel System Pressure Incorrect fuel pressure being delivered to carburetor or fuel injection system. grey_line.gif 18 Inspect Fuel Injector Plugged, dirty or poorly connected fuel injector. grey_line.gif 19 Inspect Ignition Switch Worn, damaged or faulty ignition switch or circuit. grey_line.gif 20 Inspect Spark Plug Fouled, damaged or broken spark plug(s). grey_line.gif 21 Inspect Belt Incorrectly routed, adjusted(tensioned), missing or worn drive belt(s). grey_line.gif 22 Inspect Timing Belt Slipped or broken timing belt. grey_line.gif 23 Inspect Timing Set Slipped timing chain or worn timing gear(s). grey_line.gif 24 Inspect Fuel Tank Contaminated fuel from rusted or deteriorated fuel tank. grey_line.gif 25 Inspect Ignition Timing Incorrectly adjusted engine timing. grey_line.gif

Nov 23, 2008 | 1994 Ford Aerostar Extended

2 Answers

Engine loss power good fuel but no spark at coil or plugs


Check the grounding surfaces on the coils. Also, check your ignition module, it may be malfunctioning.

Many coil problems are actually caused by other malfunctions.

I'd go ahead and change the plugs and wires anyway since it's always a good thing to do. I'd definitely start checking connections on the coil pack and ignition. It's most likely a problem somewhere in that range.

I hope this helps a little. Spark problems can be led from many different areas.

Sep 21, 2008 | Ford Escort Cars & Trucks

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