Cascade Crew

aaron_sK · Posted: Sun Dec 02, 2007 9:59 pm Post subject: Air pump disable?

Forum update killed my old topic about this, so I'll repost.

How do you disable the air pump in a 6E BIN in TunerPro? Found a few topics with later MAP BINS on TGO, but no good answer for how to do it with 6E.

Twilightoptics · Posted: Mon Dec 03, 2007 12:00 am Post subject:

You can unplug the thing and not change anything in the chip and be fine.

aaron_sK · Posted: Mon Dec 03, 2007 12:07 am Post subject:

Okay. That makes it easy. I've read conflicting info on TGO about whether or not the O2 sensor is changed when the air pump is diverting into the manifolds, but I haven't found any indication of it in TunerPro.

Thanks man.

Twilightoptics · Posted: Mon Dec 03, 2007 12:13 am Post subject:

From what I understand the air pump really only comes into play when the engine is cold, injecting air into the cat to help burn the cold emissions. At that point the O2 isn't being read anyways.

Might pull up a wiring diagram. It may be wired by temp switch even. If you're lucky :O)

blue89 · Posted: Mon Dec 03, 2007 10:29 am Post subject:

There is a correction factor on the O2 reading that jumps it up by 2 AF points when the air pump kicks on. So basically it mods the target AF with the pump on cause it knows it has additional air. You need to go in a disable that by making the correction factor 0. I don't remember where it is but I can look when I get home.

aaron_sK · Posted: Mon Dec 03, 2007 7:59 pm Post subject:

Was there a correction factor in all BIN's, or just later ones? The stuff I've seen on TGO mainly refferenced the $8D or whatever.

fiveoformula · Posted: Mon Dec 03, 2007 8:16 pm Post subject:

sorry to get off topic but i had question about the airpump aswell, how do you delete it from the serpentine system? short belt? delete bracket?

aaron_sK · Posted: Mon Dec 03, 2007 8:36 pm Post subject:

http://www.thirdgen.org/serpentine

Can't tell ya more than that since my '87 has v-belts.

blue89 · Posted: Tue Dec 04, 2007 7:31 am Post subject:

My vee-six has a shorter belt. Its a long run from the alternator to the crank but it stays on. Pretty hard to find the right belt too! I can pull a number from a belt label I keep in the glovebox. Yet another task to accomplish when I get home....

I ran mine without the air pump or chip mod for some time. Just might run a little lean on you. I never noticed anything.

Xophertony · Posted: Tue Dec 04, 2007 11:54 am Post subject:

fiveoformula · Posted: Tue Dec 04, 2007 4:13 pm Post subject:

hmmm if you run a little lean wouldnt that be better on emissions?

Dewey316 · Posted: Tue Dec 04, 2007 4:15 pm Post subject:

fiveoformula · Posted: Tue Dec 04, 2007 4:22 pm Post subject:

Xophertony · Posted: Wed Dec 05, 2007 12:29 am Post subject:

if it's not doing anything now, removing it would change nothing.

when i removed mine my emissions numbers did not change a bit. i did a deq cheack before and after removing it. on the same day, with the same gas. there was NO difference in any of the numbers.

mine must have been broken.

Twilightoptics · Posted: Wed Dec 05, 2007 7:17 am Post subject:

Xophertony · Posted: Wed Dec 05, 2007 12:34 pm Post subject:

oh.. yeah.

so if you go through deq with a cold engine it might change.

iansane · Posted: Wed Dec 05, 2007 4:43 pm Post subject:

Dewey316 · Posted: Wed Dec 05, 2007 4:49 pm Post subject:

I thought it only injected into the manifolds cold, and that it injected air straight into the catalyst when it was warmed up.

--John

iansane · Posted: Wed Dec 05, 2007 4:52 pm Post subject:

Maybe I missread by I thought it was the otherway around. Cat while cold to help make the treehuggers happy and manifold during light and part-throttle cruise.

iansane · Posted: Wed Dec 05, 2007 4:54 pm Post subject:

Yeah, here:

http://www.thirdgen.org/techboard/posts/diy-prom/214321-removing-smog-pump-air/1611318-post30.html

From this thread:

http://www.thirdgen.org/techboard/diy-prom/214321-removing-smog-pump-air.html

EDIT: Although this is all in a 730...Any different in a 165 or 747.