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Author Topic: Coolant leak trigger MIL light?  (Read 2528 times)

Offline Halogin13

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Coolant leak trigger MIL light?
« on: April 25, 2018, 10:47:54 am »
Can a leak in the coolant system trigger the check engine light in a 1987 5.7 L TBI truck?
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1987 V10 P/U

Offline VileZambonie

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Re: Coolant leak trigger MIL light?
« Reply #1 on: April 25, 2018, 11:31:08 am »
If the level were low enough
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Offline Irish_Alley

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Re: Coolant leak trigger MIL light?
« Reply #2 on: April 25, 2018, 03:14:36 pm »
better yet, why not be on the safe side and read the codes and find out instead of guessing?
http://forum.73-87chevytrucks.com/smforum/index.php?topic=29949.0
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Offline Halogin13

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Re: Coolant leak trigger MIL light?
« Reply #3 on: April 25, 2018, 03:35:42 pm »
That’s the next step.. I wasn’t sure if the rudimentary cpu in this truck would trigger that.. recently addressed an oil pressure issue, then as soon as I resolved that, the next day the radiator cracked at the outlet.. throwing code more now than before,,
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Offline VileZambonie

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Re: Coolant leak trigger MIL light?
« Reply #4 on: April 25, 2018, 05:22:05 pm »
You need to read the codes.
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10
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