Question about 1984 Ford Mustang

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Intermittent loss of spark to the plugs. Runs fine then no spark at all. I changed the fuel filter. I have changed the wire from coil module to distributer cap. Changed distributer cap and rotter.

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Change the pick up coil inside the distributer under the rotor button.

Posted on Jan 05, 2011

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Posted on Jan 02, 2017

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Where is fuel pump harness on a 2000 escalade


DTC P1351 Ignition Coil Control Circuit High Voltage
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 it 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.
This diagnostic trouble code (DTC) will set if the VCM- (vehicle control module ) detects an unusually high voltage on the ignition timing signal circuit.
Diagnostic Aids
Intermittent test -- If the connections and the harness check OK, monitor a digital voltmeter connected between VCM terminal C3 pin 9 and C4 pin 18 while moving related connectors and wiring harness. If the failure is induced, the voltage reading will change. This may help to isolate the location of the malfunction.
An intermittent may be caused by any of the following conditions:
?€¢
A poor connection

?€¢
Rubbed through wire insulation

?€¢
A broken wire inside the insulation
Thoroughly check any circuitry that is suspected of causing the intermittent complaint. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
If a repair is necessary, refer to Wiring Repairs or Connector Repairs in Wiring Systems.
Check out this guy's video on GM fuel pump electrical circuit diagnosis !

GM Fuel Pump Relay Testing

Apr 21, 2016 | Cars & Trucks

1 Answer

Need Help With Intermittent Power Loss


possible bad fuel cap vent?

Jul 20, 2015 | Cars & Trucks

1 Answer

94 5.7 falles on face boggs down then clesars up a little runs nlike junk. good cap and rotor plugs wires and new fuel pressurs regulator filter what am i missing ?????????????????? HELP


Incorrect timing? Weak spark (coil)? Low fuel pressure (restricted filter, fuel pump)? Incorrect spark plugs ? Low compression? Worn out camshaft (insufficient lift)? Spark advance (ignition module)? ECM?

Dec 28, 2013 | 1995 Pontiac Grand Am

1 Answer

1991 Cutlass ceirra 3300 ,runs fine for short time. starts running rough,then dies/will not start again.changed fuel filter, then tested fuel pump.fuel pressure is good.what next ?


Check for spark when it won't start. If you have spark, might be your fuel pump relay, maybe the map sensor. If no spark, check another or all plug wires. If ignition isn't working, it could be Crankshaft Position sensor, Camshaft position sensor (or pick-up coil), ignition control module, coils, pcm, or the wiring associated with them. PCM determines spark timing after inputs from crank and can sensors, and sends ground signal to ignition module, cutting primary voltage to coils, initiating spark or high voltage from coil to sparkplug. All these parts have to be working right for ignition. All can be tested too. You'd need a digital volt ohm meter (DVOM) and a repair manual for your car with the test procedures. That Mitchell alldata-diy site has a special on subscriptions, pretty reasonable for a 1 month subscription, and excellent info and troubleshooting flow charts, wiring diagrams, etc.

Dec 26, 2012 | 1990 Oldsmobile Cutlass Ciera

1 Answer

My car just dies when it warms up when it cools off it fires back up and runs fine


You'll have to figure out if it is a fuel or ignition problem.
When it quits running, quickly check for spark at the plugs and fuel pressure.
Is the check engine light on ? Have you checked for trouble codes ?
It could be a relay, the ignition module, coil, fuel pump, or a list of other things.
Generally, a problem that occurs hot then goes away cool is an electrical part that is failing.

Jul 03, 2012 | 2001 Hyundai Accent

1 Answer

Intermittent poor acceleration, loss of power. Has


How is your charging system? Sounds to me like it's not charging your battery, so it runs until the battery cannot support the ignition load.

Apr 24, 2017 | 1992 Buick Park Avenue

1 Answer

Replaced fuel filter - now there's no spark to the plugs.


CHECK ELECTRICAL WIRES TO THE IGNITION COIL AND MODULE.IF OKAY CHECK IGNITION MODULE FUSE.

Feb 23, 2010 | 1994 Pontiac Sunbird

2 Answers

What causes a misfire on a 99 pontiac grand am if spark plugs or good and the car does not have wires


here are the common causes of a missfire, defective ignition coil or ignition coil wiring for that cylinder, defective fuel injector, defective powertrain control module, intake manifold vacuum leak, low cylinder compression.

Aug 24, 2009 | 1999 Pontiac Grand Am GT

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