HELP!..Truck stalling and low idle, running like chit

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03-06-2008, 06:00 PM

#21

hirdlej

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That's why I always say stick with stock ignition parts. My 91 S10 never ran right with aftermarket plugs. Put standard delco plugs in and it ran like a swiss watch. Amazing.

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03-07-2008, 09:04 AM

#22

shandy294

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Good news. That's why I asked if it was just a 'cold' problem. I guess if the IAC is dirty enough it can lead to a code.

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03-26-2008, 04:33 PM

#23

SSlow 4.8

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glad you figured it out... kinda an old thread... but i wanted to ask something....

what was the fix with the evap 440 code? I'm getting the same thing and i have a tremendous amount of pressure when i take the gas cap off... was it just an evap malfunction? I'm wondering if mine is stuck closed... is it just that small canister on top of the intake manifold?

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03-26-2008, 08:20 PM

#24

JakeBrakeIH

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I dont know what turned off the codes...after I cleaned the IAC and plugged everything back in and fired her up...there was no SES...I had that code for sometime tho...440...Im very puzzled