Confirmed air regulator replacement

Discuss topics related to the CA18DE and CA18DET series engines.
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sjbsuperman1425
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Joined: Tue Nov 06, 2007 2:24 pm
Car: 1989 Nissan 240sx
CA18DET
Location: Bay City, MI
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Autozone part #AC422 for a 92 sentra. Had the same connector as the factory CA18.


beans33
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Car: 1993 ca18det 240sx

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do you mind posting a picture of it ?

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sjbsuperman1425
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CA18DET
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Sure I can post a picture along with a Nissan part # and everything.

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sjbsuperman1425
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Joined: Tue Nov 06, 2007 2:24 pm
Car: 1989 Nissan 240sx
CA18DET
Location: Bay City, MI
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Image
New regulator with Autozone part #

Image
new regulator Nissan Part number

Image
Old regulator

Image
New regulator

Image
Side by side!

Haven't got a cold start to test it with yet. Will have to wait until tomorrow when I go to work but everything fits and was a straight drop in replacement. Tested it and read 70ohms while the old one I could barely get a reading on and when I did it was around 140ohms.

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cbh148
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Car: 2000 Civic Si, 1993 240sx Hatch CA18
Location: Huntsville, AL

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Awesome info. So I'm assuming it's specifically for the Sentra SE-R right (with the SR20DE)? Not the basemodel 1.6 engine.

Either way, part number AC422.

Was there ever a confirmed Idle Control (AAC) replacement crossover for us?

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float_6969
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It's got to be for the SE-R.

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harukisan
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Joined: Fri May 31, 2013 12:40 pm
Car: 1989 Nissan 240sx coupe right hand drive, sr20det and 1989 JDM Silvia Ks model w/CA18DET

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Hey sorry I can see this is an old post but I have a question. To replace this part can it be done without taking the radiator hose off? It looks crowded there. What do you think is the best way to go about the replacement?

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float_6969
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It's been a while, but IIRC, you can do it with out taking off the upper radiator hose, but it makes it a real big PITA.


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