Cold Idle issue/miss

Syclone#1992

SyTy.net Moderator
On rainy days I had a slight miss, as if the truck were only running on 4-5 cylinders, but when the truck warmed up it was absolutely fine. Well now the cold weather is rolling in and it is doing the same exact this when cold.

Did a search and came up with a vaccum leak, EGR issue (but its been eliminated but I still run stock chip), or IAC. I was thinking that the cap could possibly getting moisture. I also have a slight miss up top when I get on it real hard too....

Its funny when the truck warms up it runs like a champ, but when its cold or rainy it does this for about 3 mins, and clears right up.

Did a tuneup last fall (plugs, wires, cap and rotor).

Thanks.
 

Syclone#1992

SyTy.net Moderator
Re: Cold Idle issue/miss

warmpancakes said:
Coil, check for green funny stuff in the cap but Id look at grounds also./

The coil had been replaced by the previous owner with an after market on...I was thinking of replacing it with the stock coil and ign. module. Those are the only two ign. related things I have not replaced. I doubt it would be a ground...but I will check that also...thanks.

Any more ideas?
 
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