car ran fine, now it will cut off when i stop at a light or something

Discuss topics related to the CA18DE and CA18DET series engines.
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OguraPowerTuning
Posts: 59
Joined: Mon Apr 04, 2005 5:30 pm
Car: s13, b12, b13 ser

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the car was running great. now when i come off the throttle and stop the car idles down really low really fast and will cut off if i dont keep on the gas a little. the only thing i can think of is that i was moving my harness all around getting ac lines out. is there a sensor that will cause this that i may have broke a wire connection to? and i removed the compessor and put new belts on the ps and alt. couldremoving the ac compressor cause a change in load that would require i adjust my idle? any ideas would be great. im going to do a bunch of tests today like compressoin and check the alt.thanks jason


silviadrifta
Posts: 45
Joined: Wed Feb 23, 2005 5:56 pm
Car: 1990 Nissan Silvia K's

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do you have a bov that is vented to atmosphere?

89'ClubK's
Posts: 244
Joined: Fri Mar 17, 2006 7:26 pm
Car: 89' Nissan 240SX

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Yes, if you're not running an SAFC-II the car will die off when you let off.I had to hook up a recirculator to my B.O.V in order to prevent this.When you let out the pressure from the B.O.V, the E.C.U is still sending fuel into your car, and it doesn't know otherwise. Your air/fuel ratio will be messed up, causing the car to overload with gas and die. (More gas than air). Also check all your lines and wires to your intake. Check the Idle-Air control valve.Good Luck!

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OguraPowerTuning
Posts: 59
Joined: Mon Apr 04, 2005 5:30 pm
Car: s13, b12, b13 ser

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bov has nothing to do with this. my car runs flawlessly with a bov. i fixed it where were some loose wires that didnt get soldered, but now they are soldered and i adjusted the idle and it runs great again

89'ClubK's
Posts: 244
Joined: Fri Mar 17, 2006 7:26 pm
Car: 89' Nissan 240SX

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Do you have a recirculating B.O.V or Atmospheric?

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OguraPowerTuning
Posts: 59
Joined: Mon Apr 04, 2005 5:30 pm
Car: s13, b12, b13 ser

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atmos. hks super-sequential. no bog. plugs seem fine.


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