2nd Generation Specific 1986-1992 Discussion

No Trailing Spark On 87 Turbo

Old 05-29-2004, 01:05 PM
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I have an 87 turbo and the trailing coil will not fire after the engine starts. It fires one time upon turning the engine over. I have checked all the grounds on it. Checked power to the unit, checked for continuity between the wires and the ECU, swapped in a different crank angle sensor. tried 3 coil packs. tried a new ECU, and no luck whatsoever. Any ideas? Thanks
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Old 05-29-2004, 08:57 PM
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bump. any ideas Please I am running out of ideas
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Old 05-30-2004, 04:33 PM
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How do you know it's not firing?

Are you using a timing gun?

If you are, this is not accurate.





-Ted
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Old 05-30-2004, 04:43 PM
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I have pulled the plug out and grounded it to check for spark. Also the tach is not working. Thanks
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Old 05-30-2004, 11:47 PM
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I added a ground wire onto the trailing coil pack and still no luck. Anyone know if there is a relay between the ECU and the trailing coil pack that can stop it from firing?
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Old 05-31-2004, 05:18 PM
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The trailing coil pack (or just the ignitor) might be dead.

The main relay that controls power to the trailing coil also controls power going to the leading coil, fuel injectors, and most of the solenoids.



If you double-check wiring and find nothing wrong, the coil pack may need to be replaced.



The bad news, these things are stupid expensive from the Mazda dealer.

The good news, they are easy to find used and very economical.

Check eBay.





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