1990 CRX B20B

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Old Nov 16, 2008 | 03:58 AM
  #1  
blackfoot's Avatar
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From: Ottawa, On, canada
Default 1990 CRX B20B

hey guys im on and off this website a lot with different cars usually. here is my latest build which all started off with my buying a rustless shell. this is pretty much the package.

new windshield
new wippers
new axles
new rear lower control arms
new gas tank
cross drilled and slotted brakes
15" eagle alloys (i dont know the name of the rim, but they suite the car very well)
tien 32way adjustable coilovers
new upper control arms
new lower ball joints
new passenger side tie rod end
1998 JDM b20b
1990 integra LS transstage 1 exedy clutch
exedy lightweght flywheel
skunk2 short throw shifter
yonaka stainless headers
apexi world sport 2 cat-back (modifed to fit car)
milage on body is 217 ish
engine is probably around 50- 60k. who knows. but it purrs like a kitten (new dirbutor oil seal, and valve cover seal)
OBD-0
obd1 injectors


anywho my question is, although it isnt crx specific.. my idle doesnt want to drop. it will sit a 2000rpm on cold start, and drop to 1500rpm when warm.

im thinking i may have a manifold leak. im wondering if anyone had this problem? and or common areas to check for?

btw pictures soon
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Old Nov 16, 2008 | 04:02 AM
  #2  
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From: warsaw, indiana, usa
Default Re: 1990 CRX B20B (blackfoot)

Im thinking if ya had a maniflod leak you would have a way higher idle. I would be looking into the iacv, clean it out and see if that helps
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Old Nov 16, 2008 | 07:02 AM
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zrickety's Avatar
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Default Re: 1990 CRX B20B (sleepingciv)

sounds like the idle screw just needs to be adjusted about 800 rpm lower.
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Old Nov 16, 2008 | 08:28 AM
  #4  
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From: Ottawa, On, canada
Default

although i havent gotten around to inspecting the iac..

the idle screw is alll the way in! lol im not joking

the intake manifold did not have an IAT port.. so what i did was i drilled my intake pipe and put it in there and extended the wires..

idle was the same before and after.. the only difference was a code 1 engine light

im using a 1990 DA LS ecu
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Old Jan 23, 2009 | 04:28 PM
  #5  
adams90crx@msn.com's Avatar
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From: Bay Saint Louis, MS, United States
Default Re: 1990 CRX B20B

I have the same problem i heard it could be the wrong distributor im gonna work on that but honda recommends whens changing manifolds to get a new iat sensor it could also be a leak somewhere cuz i just put on a new skunk2 manifold

also heard you should use a different computer to run it? b20s are a bitch but at one time i ran a 13.2 its in one of my crx gets off the line quicker when my ls vtec was stock in other crx

one more question on the sensors you use silicone to seal them or gasket material or what needs a tight seal

I am also building this b20 maybe a crvtec i need parts jdm or whatever please hit me up just wanna build it cheas it was smoking so tore it down after i waxed a turbo b16 del oh and i love those supercharged mustang guys when im in the ls vtec swap out fifth gear and you can hit near 170 with right tuning

YOUR MOTOR HAS SENSORS THAT ARENT EVEN WORKING RIGHT NOW BECAUSE OF THAT COMPUTER
BETTER TO GET HONDATA FOR IT I HAVE A PROGRAMMED P28 FOR A TYPE R WITH 9200 REDLINE LIMIT FOR SALE WITH USB CORD TO HOOK UP TO LAPTOP ONLY PROBLEM IS THE SCREEN ON THE COMPUTER BUSTED ANYBODY WATCH THOSE WIRING HARNESS ONE EXPOSED WIRE AND YOU MAY REPLACE A MOTOR BECAUSE YOU THINK ITS SCREWED UP

Last edited by adams90crx@msn.com; Jan 23, 2009 at 05:01 PM.
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Old Jan 23, 2009 | 04:55 PM
  #6  
hybridmiklo's Avatar
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From: Riverside
Default Re: 1990 CRX B20B

How bout when your car is running your go over and spray some brake cleaner where you suspect air leaks. If the idle suddenly acts funny you found your air leak.
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