88 S-10 running rich

[r***@gmail.com]

I have a 1989 Trooper with Chevy 2.8L V6. I decided to take appart the TBI today, replaced the TPS, cleaned the whole thing and serviced the IACV. The IACV you just have to unscrew the center pin (spinlge I think they call it) and it will come off... I cleaned it with carb cleaner and then lubed it with WD40 and reassembled it. After assemblying the whole thing, my TBI started running rich and uneven (if I can use that term)... you neednto ve careful about reassemblying the IACV, it has a certain graduation which needs to be observed. I got mine at 28mm from the body of the vslve to the tip of the pin... this you can adjust by screwing or unscrewing the pin... nevertheless, the tbi was still running rich... after reading a few articles about it, I came to the conclusion of disconnecting the battery for about 15 minutes... problem solved!

[Sam Stone]

After replacing a heat riser tube for cold running my vehicle acted weird until I ALSO removed a
battery cable for a reset of the computers. WD-40 ( Water Displacement 40th try ) is not a
lubricant. No where on the can can you find the word lubricant. wd40 does great at removing dirty
old build-ups of 'gunky stuff' . Enjoy

Post by r***@gmail.com
I have a 1989 Trooper with Chevy 2.8L V6. I decided to take appart the TBI today, replaced the
TPS, cleaned the whole thing and serviced the IACV. The IACV you just have to unscrew the center
pin (spinlge I think they call it) and it will come off... I cleaned it with carb cleaner and
then lubed it with WD40 and reassembled it. After assemblying the whole thing, my TBI started
running rich and uneven (if I can use that term)... you neednto ve careful about reassemblying
the IACV, it has a certain graduation which needs to be observed. I got mine at 28mm from the
body of the vslve to the tip of the pin... this you can adjust by screwing or unscrewing the
pin... nevertheless, the tbi was still running rich... after reading a few articles about it, I
came to the conclusion of disconnecting the battery for about 15 minutes... problem solved!

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[q***@yahoo.com]

I have a 88 s10 2.8 and rebuilt it all the way through and it still runs rich