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Discussion Starter · #1 ·
Stock 1986 Mustang GT convertible:
Changed thermostat and rinsed spilled coolant with garden hose. Started car, ran fine for 30 seconds then shut off by itself. Cranks fine but has not started since. Let engine bay dry, replaced fuel filter and ignition coil. No change. Help - What are most likely causes?
 

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Stock 1986 Mustang GT convertible:
Changed thermostat and rinsed spilled coolant with garden hose. Started car, ran fine for 30 seconds then shut off by itself. Cranks fine but has not started since. Let engine bay dry, replaced fuel filter and ignition coil. No change. Help - What are most likely causes?
so you took your garden hose to the engine and now it wont start.. most likely cause is moisture some place it's not suppose to be... i would start by unplugging everything.. let air dry... and use connector grease (dialethic) sp??? and reattach everything. take cap off for sure.. could be tfi module as stated earlier.. you can check your coil most time with a meter .... no need to swap a bunch of parts trying chit.. time to test..
 

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Discussion Starter · #5 ·
Ilusivefox had it correct. Installed new TFI module and car is running again. Apparently the problem was not water, but damage to the module during installation of the new thermostat (repetitive impacts from the socket wrench handle). Thanks Ford for jamming everything into such tight spaces. That includes the thermostat and the TFI module.
Ilusivefox is a Sly Fox. Thank you!
 
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