My engine light would start flashing every now and then today and the truck would start missing a little. Any ideas why?

Info:
This has happened once before but the light didn't flash.
This time i do have a small exhaust leak where I patched up the exhaust.
Both times it had been raining.


I'll try to see if there's any codes when i tune for the cam but don't know how long that will be.
Is it possible my o2 censor or MAF got wet?

 

similar thing happened to me but..I got lucky just a loose wire on the number 2 plug.

 

That's what i'm hoping. but haven't checked the wires yet.

 

a flashing MIL (check engine light) is a miss fire...get it checked out...

 

Case closed

Had 3 wires that weren't clicked all the way on.

 

good for you. last time that happened to me it was my factory cats going bad and i ended up getting stranded on the way to have them fixed.

 

Well... Case not closed. Went to work this morning and shortly after driving thru a flooded area it went to missing again.
DozerDan suggested I check the wire on the TB. Said his used to get wet and start causing problems so I'm going to try that.

Stay with pt.net..we'll keep you advised.

 

Any word on the problem yet? Did you check that tb wire? may want to check into o2's they could be a little loose when they see moisture they could throw some strange numbers at your pcm

 

Any poorly insulated electrical ciruit will give you problems once moisture is induced, sounds like you're on the right track with leaning towards a wiring problem. Bad spark plug wires will also create a condition like the one you described...maybe even a cracked spark plug

 

fuel pump?