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  1. #1

    Unhappy Engine light after replacing head gaskets??

    i just replaced my head gaskets on my truck and now my engine light is on and the engine sounds a bit sluggish...i put everything back the way i took it out and i cant figure out why its doing this??? any help is appreciated..thanks.
    2004 Chevy Silverado LS Ext Cab
    auto, 4.8L, 190 HP (dyno'd)

  2. #2
    murdog94's Avatar
    Join Date
    Feb 2008
    Cloquet, Minnesota, United States
    Blog Entries


    You will want to have the codes pulled for the check engine light. that honestly is the best place to start and takes all of the guessing out of it. I dont know how they handle auto parts in germany (like we have large auto parts store chains here) but if you can go to an auto parts store and they have an On Board Diagnostics 2 (once again not to sure what germany calls certain things) scanner then you can pull the codes and go from there.


    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

  3. #3


    i appreciate the response murdog...i found out what was wrong when i took a closer look :( i put everything together at when i rechecked everything in the day, i found that i forgot to pug in my driver side harness to the she was running on 4 cylinders...i felt really stupid for overlooking that small thing...hope this might help someone else

  4. #4

    Join Date
    Jun 2006
    River Ridge Louisiana-4 miles W of New Orleans-didn't flood-water stopped 800 yards away.


    Boy, do I get that. It is 5x harder to do work at night!
    Were you doing head gaskets(huge nasty job), or intake manifold gaskets(nasty but not so huge)?
    1998 suburban-
    1/2 ton

    199500 miles

  5. #5

    Default everything from the heads up pretty much...and a few others..head gaskets, intake gaskets, vavle cover gaskets, thermostat, fuel injector o-rings ( upper and lowers)..just to name a few

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