IDLE problem.. after venting stock bov
#1
IDLE problem.. after venting stock bov
Hey all. I just finished venting the stock bov. I remove the hose from the bov to the airbox and capped the airbox with a wine cork(great fit). Now everytime I start the car it idles to 3000. It only does this after a long period of time. Like if i go somewhere and than come back 5 mintues later it will not do it. So it revs to 3000 for about 2 mintues, it will stop if i go in reverse or drive. Is this a problem with all stock vented bovs? Anyways any responses from the genuises are greatly appreciated.
#4
No its never started cold. I live in florida. The temp rarely drops below 75 degrees. Like in the morning tomorrow it will do it. I go to work and at the end of work it will not do it. Its like after it sits for a long time it will do it. It gets obnoxiously loud and alot of air is coming through the blowoff valve. When it revs to 3000 it stays constant at 3000 for about 2 mintues. Untill i put it in drive or reverse. As i have an automatic. Anyways I really appreciate your guys help and this site has helped me greatly.
#7
This is normal. By cold start we mean like you say, it hasn't been started in a while (overnight). It's called the automatic warmup system. Mazda included it to warm up the cats before driving. It had most to do with emissions. Unfortunatly, the higher the miles go, the less positive it is to have cold apex seals revving to 3000 for an extended period. This has nothing to do with venting the BOV. I'm in Miami, and even during summer, when the car has been sitting at least about 8 hours or more, it will do this. As skunks says, you can blip the throttle as well as start the car in gear to stop this. There are more permanent ways if you search AWS.
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#10
Well it didnt do it at all before i vented the bov. I had it for about 3 months before and it didnt do it once. Now that i vented it, it started doing it. Alright well its fine I was just making sure it was normal and something was wrong with the engine. thanks
#18
hi you guys! new guy here to this rotary world ![Smilie](https://www.rx7club.com/images/smilies/smile.gif)
i've got a bone stock s4 fc t2.. manual
i tried to vent out the stock bov, plugged the hole that connects to the air housing.. and the car dies...
i really want that woooooshhh! sound... PLS Help! ^_^
i'm thinking of buying after market bov like the hks ssbov but i'm afraid that it might have the same problem
![Smilie](https://www.rx7club.com/images/smilies/smile.gif)
i've got a bone stock s4 fc t2.. manual
i tried to vent out the stock bov, plugged the hole that connects to the air housing.. and the car dies...
i really want that woooooshhh! sound... PLS Help! ^_^
i'm thinking of buying after market bov like the hks ssbov but i'm afraid that it might have the same problem
![Frown](https://www.rx7club.com/images/smilies/frown.gif)
#19
Tenseiga
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they only way you can do that on a FC is to use a check valve from the vac source. It's not the best way but will work for close to stock boost levels with the stock bov.
it is a MAF systems unlike the FD's MAP so it will die if it get's unmetered air. The stock bov's do let air past.
after market do not cause air leaks so they will be fine.
it is a MAF systems unlike the FD's MAP so it will die if it get's unmetered air. The stock bov's do let air past.
after market do not cause air leaks so they will be fine.
Last edited by Sesshoumaru; 08-25-04 at 10:42 AM.
#20
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Venting the stock BOV to atmosphere will have no affect on the idle.
I have heard so many stories like; "ALL I DID WAS ...".
Then it ends up that they did something either wrong , or accidentially.
12 years FD experince including rebuiling engines.
I have heard so many stories like; "ALL I DID WAS ...".
Then it ends up that they did something either wrong , or accidentially.
12 years FD experince including rebuiling engines.
#21
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Originally Posted by cewrx7r1
Venting the stock BOV to atmosphere will have no affect on the idle.
I have heard so many stories like; "ALL I DID WAS ...".
Then it ends up that they did something either wrong , or accidentially.
12 years FD experince including rebuiling engines.
I have heard so many stories like; "ALL I DID WAS ...".
Then it ends up that they did something either wrong , or accidentially.
12 years FD experince including rebuiling engines.
dude....... RomeoFC3S talk'n about a FC. That doesn't have a MAP.
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