Quote:
Originally Posted by dragontrlr
ha. the engine only fooled me. it will start when cold and idle but not in gear, as it warms up the idle settles down and will actually idle in and out of gear. as engine gets hot back to no longer idling in gear and when finally when engine is hot will not start.
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Those symptoms point to a defective coolant temperature sensor, so you might want to test it, or at least inspect the wiring going to it. It's a 2-wire sensor screwed into the top of the intake manifold next to the t-stat housing.
When cold (50-80 degrees) the ohms should be 10,800-17,900. When hot (180-200 degrees) the ohms should be 1,170-820. It's in a difficult spot, so it's easier to test if you take it out and use cold water and a heat gun to vary the temperature.