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    Electrical 99 4.6 Will Not Start Below 40 Degrees

    I will try everything posted tomorrow, the fuel pressure leak down could definitely be temp sensitive, something reacting, shrinking or 'sticky' when cold
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    Electrical 99 4.6 Will Not Start Below 40 Degrees

    Just back from the holidays' I will check the battery tomorrow, but expect it to be fine, it cranks good, hot off the charger lately. No fan or anything, tried holding accel, pumping accel etc. I have unplugged IAT sensor, normal rules of thumb aren't working, the more I read the more 1 of a...
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    Electrical 99 4.6 Will Not Start Below 40 Degrees

    Hello, my sons 99 4.6, borla exhaust/h pipe only mods, wouldn't start last winter, which its not driven much then. Narrowed down after it ran fine all summer it will not start around 40 degrees F or below, the garage warmed to 54 last friday and it started fine,Sunday 41 degrees no start...