4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

missing 1000-1500rpm.

Old 09-25-2008, 09:40 PM
  #1  
Donnie's GTS
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Default missing 1000-1500rpm.

About a week ago I had a t-fitting that recirculates coolant from the intake back into the heater core line fail, dumping coolant everywhere. To make a long story short it now misses under load in the 1000-1500 range, then goes away anywhere above that. It also only misses once the throttle is opened to a certain point. Before i go with plugs and coils I want to know if this could have dirtied up anything through the intake? I have a hunch that it sucked in some coolant and fouled a plug or 8. Any ideas would be helpful.
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Old 09-26-2008, 03:43 AM
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cliffyk
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The first thing you need to do is pull the COPs and make sure the plugs wells are dry--get the coolant out of the plug wells (stuff paper towels down in there, use a shop-vac with a thin tube taped on, compressed air, or whatever).

Chances are you'll find one (maybe #8) with coolant in the well...
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Old 09-26-2008, 03:56 AM
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whiterabit998
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dude u read my mind, i took off my manifold and i cant get that hose back onto the mainiford right.. its getting into cyl 4 through the spark plug hole.. check ur coil and plug i bet they are wet.
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Old 09-26-2008, 10:46 AM
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Donnie's GTS
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thanks for the suggestions, going out there right now.
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