P0024 - Need a exhaust valve control magnet retarder
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New Member
Joined: Jul 2014
Posts: 11
Likes: 0
From: Santa Cruz, CA
P0024 - Need a exhaust valve control magnet retarder
My 2007 350z Enthusiast, automatic, is running great, but the check engine light is on, so it won't pass smog testing. I have a great mechanic who tweaked it until it passed, but the check engine light is back on. I am leaving Northern California and need to sell it. Anyone here have one of these retarders or know where I can get a used one? The one my mechanic texted mw was part of the timing cover and solenoid, and was $800!
New Member
Joined: Feb 2022
Posts: 64
Likes: 9
From: Texas
vq35hr Exhaust Valve Control Magnet Retarder
Hello All,
my answer may not be what you would expect but here goes.
this may seem unusual but check the maxima tech bulletin "NTB12-116" below.
This is for a VQ35DE, however it seems it would apply to the HR as well.
Next find a good Exhaust Valve Control Magnet Retarder from a salvaged yard HR and follow the instructions in NTB12-116.
BTW, I found this info by chance on the internet while looking into the same problem.
I'll be doing this to my 07 hr in the next week or so.
Hope this is of some help to any one with the same problem.
Sure don't want to spend 2k on VTC covers just to get the parts to fix my Z. LOL
my answer may not be what you would expect but here goes.
this may seem unusual but check the maxima tech bulletin "NTB12-116" below.
This is for a VQ35DE, however it seems it would apply to the HR as well.
Next find a good Exhaust Valve Control Magnet Retarder from a salvaged yard HR and follow the instructions in NTB12-116.
BTW, I found this info by chance on the internet while looking into the same problem.
I'll be doing this to my 07 hr in the next week or so.
Hope this is of some help to any one with the same problem.
Sure don't want to spend 2k on VTC covers just to get the parts to fix my Z. LOL
Hello All,
my answer may not be what you would expect but here goes.
this may seem unusual but check the maxima tech bulletin "NTB12-116" below.
This is for a VQ35DE, however it seems it would apply to the HR as well.
Next find a good Exhaust Valve Control Magnet Retarder from a salvaged yard HR and follow the instructions in NTB12-116.
BTW, I found this info by chance on the internet while looking into the same problem.
I'll be doing this to my 07 hr in the next week or so.
Hope this is of some help to any one with the same problem.
Sure don't want to spend 2k on VTC covers just to get the parts to fix my Z. LOL
my answer may not be what you would expect but here goes.
this may seem unusual but check the maxima tech bulletin "NTB12-116" below.
This is for a VQ35DE, however it seems it would apply to the HR as well.
Next find a good Exhaust Valve Control Magnet Retarder from a salvaged yard HR and follow the instructions in NTB12-116.
BTW, I found this info by chance on the internet while looking into the same problem.
I'll be doing this to my 07 hr in the next week or so.
Hope this is of some help to any one with the same problem.
Sure don't want to spend 2k on VTC covers just to get the parts to fix my Z. LOL
New Member
Joined: Feb 2022
Posts: 64
Likes: 9
From: Texas
Understood...it's just my turn I suppose. Have you guy's resolved this problem? Looking for the solution. LOL
My started this in Dec of 21...
I've had the Z since 2007. Got it brand new and it now has 238000 miles. Have had other problems, will be trying the change magnetic actuators some time this week
Thanks to for everyone for posting about the issue. Any help is always appreciated.
My started this in Dec of 21...
I've had the Z since 2007. Got it brand new and it now has 238000 miles. Have had other problems, will be trying the change magnetic actuators some time this week
Thanks to for everyone for posting about the issue. Any help is always appreciated.
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