No spark at the plugs?

Hello again,

Okay, Can I get you to check the wire coming from the #1 cavity on the TFI Ignition Module Connector. Please run this wire back and check to make sure it has a good tight connection, and it is not damaged and there is no corrosion present anywhere. I have included a diagram of the connector and component locations in the diagrams below. Please get back to us with what you find out.

Thanks,
Alex
2CarPros

Please let us know what you find. We are interested to see what it is.

Hello,

OK, first thing I would look at is the Distributor Cap & Rotor, when was last time replaced. Look inside is there corrosion in the contacts if so would replace along with rotor. While there if can have someone turn engine over and watch to see if rotor spins, if doesn't then most likely will need new distributor.

Other possibilities -

If Check Engine Light is On

TPS - Throttle Position Sensor
IABV or IAC - Idle Air Bypass Valve or Idle Air Control Valve

The engine needs to be at normal operating temperature for testing.

The self test connector is on the drivers side inner fender well. Check Pic for shape of connector. Then hook up a jumper wire as shown in the diagram below. Turn your key forward to the RUN position (KOEO, key on, engine off), and after a few seconds the codes will begin to flash through Engine Light or if you have hooked up a voltmeter, the needle on the voltmeter will indicate the digits of the trouble codes in sweeps of the needle. Record all codes and identify them as KOEO codes.

Code will be shown in blinks of the light or sweeps of the needle.

Example:

2 digit Codes

1 fast flash, with 2 sec pause, then 2 fast flashes is code 12

2 fast flashes, with two sec pause, then 3 quick flashes is code 23.

3 digit codes

1 fast flashe, 2 sec pause, 3 fast flashes, 2 sec pause, then 2 fast flashes is code 132

If there are more there will be a 4 second pause before the next code starts.

After the KOEO codes finish. Continuous codes follow after a 6 to 9 second pause, a fast flash, and another 6 to 9 second pause. Write these codes as continuous codes. Then remove key and the jumper wire.

You won't be able to perform Key On Engine Running test(KOER) at this time.

Hi ARAIN WRIGHT,

Just checking in to see if you resolved the no spark problem.

Thanks

Mark

It sounds like the PCM went out, but to be sure let's check the wiring between the ECM and distributor. Here is a guide and the ignition system wiring diagrams. Also check the ECC relay.

https://www.2carpros.com/articles/how-to-check-wiring

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (below). Please let us know what happens.

If your getting a power signal to one side and a pulse to the other, that would indicate a bad coil or coil wire. Also, if you used a test light with an incandescent bulb, you can fry the ignition module in a heartbeat. You need to use either a noid light or computer safe test light.

If it gets the proper signals and no spark comes out, then the coil is bad. Just be sure about your testing.

First things first. Go out and buy a spark tester. Then check spark directly from coil. If its there then check for spark coming out of each spark plug wire. Make sur eyou ground out the tester good. Note back what color the spark is. Shoudl be bright and blue. Not orange or yellow.

Its still called condenser its not going to stop the truck
check the connector plug on the coil
pull it out and check for battery power with key on
and when plugged back in with key on two terminals should show battery power
and when cranking one should lose its power and ground the coil on off
if so and still no fire replace coil
another thing to look for turn key on do you have check engine light on
let me know

Most likely an ignition module. Those are very toughy and go out for no real reason. Should be mounted to the side of the distributor where the electrical plug goes. You must disconnect ehneg batttery cable before replacing it or you may burn up the new one