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check engine light after mevi install...

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Old 06-06-2011, 09:02 PM
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check engine light after mevi install...

hey everyone, please disregaurd my previous threads i finally got the mevi working properly...but on my stock manifold there where 2 threaded studs near the iac valve that help what i believe to be an evap purge flow sensor...the mevi does not have those stops so the sensor/ mechanism is just laying there and there is no where for the hose to connect too...has anyone else had this problem? can i just plug that hose or do i have to tap into another source with a t-piece????? im now throwing a check engine light for a P1447 code whch is EVAP Control System Purge Flow Monitoring. please help me out. thanks
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Old 06-07-2011, 01:08 PM
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Originally Posted by d-mauch
hey everyone, please disregaurd my previous threads i finally got the mevi working properly...but on my stock manifold there where 2 threaded studs near the iac valve that help what i believe to be an evap purge flow sensor...the mevi does not have those stops so the sensor/ mechanism is just laying there and there is no where for the hose to connect too...has anyone else had this problem? can i just plug that hose or do i have to tap into another source with a t-piece????? im now throwing a check engine light for a P1447 code whch is EVAP Control System Purge Flow Monitoring. please help me out. thanks
It's normal for the EVAP mechanism to not have a place to mount to. But, you do have to hook up all the hoses. The hose you're talking about coming off the EVAP mechanism is rather larger, and the connection on the MEVI is rather small, so you'll need an vacuum hose adapter from Autozone or the like so you can convert the big hose into a smaller hose and hook it back up. No, you can't just plug it. LOL

I bet you put the vacuum line in it's place on the MEVI. You need to connect the EVAP mechanism to that place, and tee in the vacuum line into something else. If I was at home, I'd snap a pic and show you what I did.
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Old 06-07-2011, 04:57 PM
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Originally Posted by The Wizard
It's normal for the EVAP mechanism to not have a place to mount to. But, you do have to hook up all the hoses. The hose you're talking about coming off the EVAP mechanism is rather larger, and the connection on the MEVI is rather small, so you'll need an vacuum hose adapter from Autozone or the like so you can convert the big hose into a smaller hose and hook it back up. No, you can't just plug it. LOL

I bet you put the vacuum line in it's place on the MEVI. You need to connect the EVAP mechanism to that place, and tee in the vacuum line into something else. If I was at home, I'd snap a pic and show you what I did.


if you can please please please whenever you get a chance send me a pic of where you connected it...thanks so much!
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Old 06-08-2011, 01:26 AM
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Here's some pics on my 98 Max

BEFORE photoshop: Here, I pulled out the hose so the reducer can be seen. Normally it's hidden from view.


After Photoshop: With the EVAP hose highlighted in red





Closeup of reducer


How it looks when I have everything the way I want it (no reducer in sight)




Sexy MEVI time

Last edited by The Wizard; 06-08-2011 at 01:39 AM.
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Old 06-08-2011, 01:36 AM
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Also, just for reference purposes, the OEM 1998 Intake Manifold has a vacuum connection as shown in red, where the MEVI doesn't have this. Feel free to connect to any vacuum source after the TB. I tied the vacuum line into another vacuum line under the TB and to the right towards the IACV using a vacuum "T" (sold at Autozone etc)

The IM on my 99 CA Spec Max does not have this vacuum port (as shown in red), so I didn't have to worry about it.

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Old 06-08-2011, 02:46 AM
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OT but the USIM 4g IACV looks like it bolts right up to the MEVI. Am I right James?
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Old 06-08-2011, 07:33 AM
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Originally Posted by VQ'rInWLA
OT but the USIM 4g IACV looks like it bolts right up to the MEVI. Am I right James?
That's correct DB.
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Old 06-08-2011, 06:22 PM
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Originally Posted by The Wizard
Here's some pics on my 98 Max

BEFORE photoshop: Here, I pulled out the hose so the reducer can be seen. Normally it's hidden from view.


After Photoshop: With the EVAP hose highlighted in red





Closeup of reducer


How it looks when I have everything the way I want it (no reducer in sight)




Sexy MEVI time

thanks so much! im going to get the reducer this weekend. i already have a bunch of tee pieces...you wouldnt happen to know what size vacuum line you used would you?
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Old 06-09-2011, 12:11 AM
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shouldnt matter what size really, as long as it fits.
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Old 06-16-2011, 04:53 PM
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OP, did you get your issue resolved?
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Old 06-28-2011, 12:35 PM
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I'm also wondering if this solved the problem. I currently have the p1447 code, however i have everything connected...
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Old 07-24-2011, 12:37 PM
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hey everyone sorry i didnt get back sooner but this solved my problem for a while...im now getting a check engine light for a small leak...im gonna check all my lines either today or tomorrow cause alot of them were dry rotted when i did the swap...i will keep you posted
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