 AAR Question, Can it be removed? |
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| flat4tom |
 Mar 8 2010, 11:54 AM
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Member  Group: Members Posts: 51 Joined: 6-January 10 From: Shingletown CA Member No.: 11,207 Region Association: Northern California  |
Hello everyone,
In going over my car's vacuum lines - waiting for my fuel injectors to be returned from servicing - I decided to replace the hose from the AAR valve to the cold start valve. Then I started to think - a dangerous thing - why do I need the AAR if the cold start valve is disconnected? It currently has no fuel supply so it's not working. Currently my AAR is stuck open. Should I try to free it and reinstall it, or can I just plug the hose to the cold start valve and not bother putting it back? Before I pulled the injectors for service, when my car was running (I am getting this car running again from a 3 year sleep) it had a way high idle ~ 1400rpms - so there's undoubtedly vacuum leak(s) somewhere. Any input is welcome. Thanks! Tom '73 2.0 |
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| McMark |
Mar 8 2010, 12:43 PM
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
The AAR keeps your idle up while the car is warming up. It's worth taking the time to fix it. It has nothing to do with the cold start valve. And further, the cold start valve only fires under the following conditions:
The 'engine temperature'* is below 95 degrees and ONLY while the motor is cranking and ONLY for 5-12 seconds (depending on the number of degrees below 95). *-Engine temperature is measured by the thermotime switch, which is mounted under the main plenum. It's not oil temp and it's not CHT. |
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Posts in this topic
flat4tom AAR Question Mar 8 2010, 11:54 AM
dflesburg http://members.rennlist.com/pbanders/djetp...tm#tr... Mar 8 2010, 11:56 AM
flat4tom Just a follow up on my question about the AAR;
Th... Mar 15 2010, 01:07 PM vsg914 stuck open means high idle. You can pull it off, b... Mar 8 2010, 11:57 AM dflesburg I have always wanted to try one of these....
http... Mar 8 2010, 12:40 PM pbanders
The AAR keeps your idle up while the car is warmi... Mar 8 2010, 03:16 PM jim_hoyland They free-up pretty easily with PB Blaster. You ca... Mar 8 2010, 12:46 PM pbanders
They free-up pretty easily with PB Blaster. You c... Mar 8 2010, 03:20 PM flat4tom
They free-up pretty easily with PB Blaster. You ... Mar 8 2010, 05:19 PM underthetire I don't think the Nissan one has a heater elem... Mar 8 2010, 04:11 PM thompson-mfr http://www.914world.com/bbs2/index.php?sho...y+air... Mar 8 2010, 05:42 PM |
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