2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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neep help asap!! can i run w no air pump??

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Old 11-02-06, 05:36 PM
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neep help asap!! can i run w no air pump??

i have a 91 non turbo. my air pump bracket broke so i need to know if i can take it out + run without it.
Old 11-02-06, 05:40 PM
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yes, get a double alt. pulley and it will work just fine. a lot of people remove the air pump
Old 11-02-06, 05:46 PM
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do i need to clog the hoses?
Old 11-02-06, 06:22 PM
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Your car will be slower considering that s5s use the air pump to open the aux ports...
Old 11-02-06, 06:24 PM
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With the guy above ...........and................the catalytic converter, if installed, will clog up in the near future if you don't have a airpump and working ACV. Near term defined as within a year. That's just a guess on the time line.

About the hose. The one that fed air to the pump should be capped/plugged. The one that fed air to the ACV does not HAVE to be capped or plugged, but it's always a good idea to do so to keep FOD out. The ACV has zip to do with the running of the engine, except in a very minor way during deceleration when the anti afterburn valve in the ACV opens for a moment or two.

Last edited by HAILERS; 11-02-06 at 06:27 PM.
Old 11-02-06, 06:44 PM
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thanks for all your help so far.


so i took it for a drive + i noticed a few things....


first of it seems like the engine revs more freely now. its like the engine is freed up without the pump on there or something.

second thing i noticed is that it smokes constantly now. it was a bit worse when it started up cold, then never got better when it was all the way warm. it only used to smoke when it was cold.

i didn't drive it past 3.5k or so, so i don't know about how it would work when the aux ports should be opened.
Old 11-02-06, 07:32 PM
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I knw wht u did last sumr

 
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I wouldn't recommend it. Yes, your car will run fine but your performance will suffer. Ive got a 90' GXL NA with minor mods and ran against a GTU NA with the air pump removed. We both have nearly the same mods but he got taken when we raced. Considering he even has the 4:30's I was thinking it was going to be closer than it was!
Old 11-02-06, 08:02 PM
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Right you took him because he 5th and 6th ports arent working more than likely or he has other problems....
Old 11-02-06, 09:02 PM
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yeah. so when i was trying to put my **** back together, another part broke :/


it started when the top bracket broke off for the air pump. i ended up taking that off + trying some JB weld on it as a temp fix. i was putting it back on tonight when the bolt i had for the power steering belt tensioner broke off. this sucks *** cause i have some toyo 245's on there. it broke once before + i had to drive around like that + parking sucked! so now i have the air pump back on + its loose as hell, but its on there. hopefully my part will come soon :/
Old 11-03-06, 01:10 AM
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Are you trying to tighten the the belt using the long tentioner bolt without loosening the tentioner pully bolt? That would explain y they keep snaping...
Old 11-03-06, 04:15 PM
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no. i loosened both bolts for the air pump. i think i just tightened it too much + its old... i have a habit of over tightening stuff
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