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CRX Vacuum Hookups for B18A ???

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Old 07-07-2006, 03:07 PM
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zekezank
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Default CRX Vacuum Hookups for B18A ???

Ok, I have a new problem.
On my new 91 CRX SI which I purchased a month ago, I have some lose hoses. I have been trying to figure out what goes where, and I now know that stuff seems hooked up very wrong.
I have gotten many books and manuals, and looked over everything.
I have tried hooking up my connections different ways, but all the new ways I tried didn't seem right and always make my CEL come on.
I was wondering if anyone who has a CRX with a B18A in it could give me some advice.
My problem is this:
I have the CRX connections, circled in Blue in this picture:



And I need to hookup this engine to them, which is circled in blue.
It seems like I need more things that I don't have which I circled in red in it:



Does anyone know what I should do or any place to give me a clue?
What would be really helpful would be a diagram from someone who has done it right :-)

Thanks!
Old 07-07-2006, 10:56 PM
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Kai
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What code is your car throwing?

The MAP sensor is really the only critical one there. It needs to be connected to post-TB vacuum, best if not t'd off another line.

Vac lines aren't that important as long as they go to the right places. Missing parts and wires are something else.
Old 07-08-2006, 04:32 AM
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zekezank
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The code it throws when I Start messing with it is 43, which is a fuel system one. Would them being hooked up wrong really mess with my mileage, as I only get 12 mpg. I also have a bad o2 sensor which may cause the bad mpg though, should get my new one anyday now.
Old 07-08-2006, 08:04 AM
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jdmeg6hatchy
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damn. 12mpg for a crx!!!!!!!!!!!! ouch
Old 07-08-2006, 08:21 AM
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zekezank
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Here are some pictures of when I was trying things, you can see that I don't seem to have all the right stuff to hook a b18a up to:


Old 07-09-2006, 04:23 AM
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daveb91
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Where is your map sensor going? Is it going to a place on the back of the manifold. #1 fix the O2 sensor. From what I can see of the pics ( there bad though) it seems you have the dash pot unhooked.
Old 09-10-2006, 09:26 AM
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drummingpariah
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I'm having the same problem. I also have the b18a1 map sensor and vac fittings, but they won't bolt up to the '91 CRX Si wiring harness (there have actually been a bunch of wiring problems so far, if anybody knows of a good place to look for b18a1 wiring in a CRX, please let me know). Are T-fittings the way to go with the vac on the CRX map sensor?
Old 09-10-2006, 08:33 PM
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Kai
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I would advise against running the Map sensor off a T'ed line. Try to run it on a vacuum hose connected straight to the manifold.




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