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Source for knock sensor


mk2davis
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Galant VR-4 org Post #: 1248980 posted 05/10/20 01:13 PM     Remind Me!  Send Private Message   Edit Post      
Anyone have a resource for knock sensors? I've checked Orielly's, Napa, AZ, Pepboys, PerformancePartout, Andy's autoparts, Partsgeek, Rockauto... no joy.

OEM part number I think is MD141510

Mitsubishipartswarehouse.com price is $10000, too bad it's not available...

Amazon says they have some, but they look different: click

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raptorWagon
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Galant VR-4 org Post #: 1248985 posted 05/10/20 10:12 PM     Remind Me!  Send Private Message   Edit Post      
Parts Geek
They have one available, and I just ordered some other NLA parts from them for one of my other cars recently.



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mk2davis
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Galant VR-4 org Post #: 1248986 posted 05/10/20 10:25 PM     Remind Me!  Send Private Message   Edit Post      
Both the parts listed are out of stock. Any other ideas?

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Galant VR-4 org Post #: 1248990 posted 05/11/20 01:37 AM     Remind Me!  Send Private Message   Edit Post      
ebay?



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Galant VR-4 org Post #: 1248991 posted 05/11/20 07:08 AM     Remind Me!  Send Private Message   Edit Post      
I have 3 knock sensor sitting on order from an eBay company. They claimed to be in the states and ended up being in China. I'm still waiting, as I couldn't find them anywhere else.



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mk2davis
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Galant VR-4 org Post #: 1248992 posted 05/11/20 12:00 PM     Remind Me!  Send Private Message   Edit Post      
Vividracing.com and horsepowerfreaks.com (which seem to be the same company) list:

Original Equipment W0133-1623757, click

for about 75 delivered.

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moduleunknown
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Galant VR-4 org Post #: 1248996 posted 05/11/20 03:27 PM     Remind Me!  Send Private Message   Edit Post      
I wonder if they truly have any "in stock." I added 99 to my cart and their website didn't complain. I highly doubt they have that many available. I'd suspect their site doesn't properly track inventory or suppliers.

It doesn't look like anyone is making these knock sensors anymore.

I recently came across a thread on DSMtuners here which is more of the same - no one being able to find an OEM replacement.

However, that thread does lead to a potential replacement. NTK ID0263 Knock Sensor (which appears to still be available) may be the same sensor, but with shorter wires. Something to look into if that vividracing order doesn't pan out...



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mk2davis
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Galant VR-4 org Post #: 1248999 posted 05/11/20 04:38 PM     Remind Me!  Send Private Message   Edit Post      
I found that thread to on that OTHER forum, but I didn't see any confirmation one way or another. Iirc, that was the sensor for miatas. I think the concern about if they work for our motors is legitimate, but I have no idea. I also ordered one from fleabay, I'll report back if and when either one is received.

My current sensor gives phantom knock at like 2000rpm at next to no load (loadfactor .2 to. 4), and possibly valid knock with 5-8psi. I'm hoping this background will help determine if the new one (s) function right.

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Galant VR-4 org Post #: 1249001 posted 05/12/20 03:16 AM     Remind Me!  Send Private Message   Edit Post      
ugh seeing this makes me consider hoarding some if a good source is found- but even then, how long is the goo shelf stable?




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Galant VR-4 org Post #: 1249003 posted 05/12/20 08:04 AM     Remind Me!  Send Private Message   Edit Post      
I plan on storing mine in a cool, dark place and hope they last once I receive them.



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Galant VR-4 org Post #: 1249005 posted 05/12/20 12:52 PM     Remind Me!  Send Private Message   Edit Post      
Probably a good idea to just cryogenically freeze them until needed

I've been following this thread for a bit and even sourced a possible alternative replacement. I created a plug n play harness for the Miata sensor. The sensor is made by mitsu and looks exactly the same as ours down to the goo and all. Plugging it in to see if it throws a CEL or not is easy enough, but...

Biggest issue, as pointed out in the tuners thread, is determining if it has the right frequency filters. No one has been able to get any manufacturers to confirm if the the filtered frequencies are the same, and there aren't any very scientific ways to confirm it. As of now I plan to run a known good DSM knock sensor and make a few logs, then swap and try to replicate and compare results. If anyone wanted to test the Miata sensor, I would be happy to work with them, but can make no guarantees about it working, just speculation based on someone from tuner's experience. As an alternative, I may try a standalone knock detection in conjunction with both sensors to see if they pickup the same knock detected by the standalone. Its a little risky to run these while making a pull with potentially bad knock detection, but there aren't a lot of alternatives for confirming.

Ultimately, it's not a very scientific approach. Knowing from Mitsubishi what the filter frequencies for these sensors is would be the best, but short of that, I assume someone would need an oscilloscope or similar equipment to test the filters. No one is stepping up with a scientific approach, just a lot of speculation (Miata and CSM sensors look the same, made by Mitsu) and I think we're all really hoping something works.

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Galant VR-4 org Post #: 1249006 posted 05/12/20 02:12 PM     Remind Me!  Send Private Message   Edit Post      
my only concern is the CSM and miata were mostly non-turbo models. the real question is does the non turbo CSM/miata and turbo model CSM/miata have the same part number. if not then id say wrong frequency, never thought of looking at different vehicles for a matching knock sensor...



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mooserage
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Galant VR-4 org Post #: 1249011 posted 05/12/20 07:20 PM     Remind Me!  Send Private Message   Edit Post      
No, and I wouldn't expect them to have the same part number. CSM has a shorter cable with the same plug, Miata is of course a Mazda part number, but also has a different plug and cable length, so all of the part numbers are different. The real question is are the internals the same, even if cable lengths and styles are different? The piezoelectric element could be the same across all 3 with the ECU discerning what is knock or not for that motor, or the filtering might be a physical difference in the element/internal electronics, then they would not be cross-compatible. But, that's what I mean, it's all conjecture without the right engineering info.

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Galant VR-4 org Post #: 1249012 posted 05/12/20 08:19 PM     Remind Me!  Send Private Message   Edit Post      
I believe he was referring to turbo and NA models of either cars sharing the part numbers between them, not manufacturers lol.



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Galant VR-4 org Post #: 1249013 posted 05/12/20 08:29 PM     Remind Me!  Send Private Message   Edit Post      
And the Knock sensor MD131681 that is on the 1.6l C53A Mirage, is the same for E33A (with 4g63) and E38A Galants according to ASA. The DOHC 4g61 C63A mirages, however don't have anything available in ASA for a knock sensor...it's either been long time obsolete or they didn't have one.



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mooserage
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Galant VR-4 org Post #: 1249016 posted 05/13/20 10:36 AM     Remind Me!  Send Private Message   Edit Post      
Quoting raptorWagon:

I believe he was referring to turbo and NA models of either cars sharing the part numbers between them, not manufacturers lol.



Fair point, I didn't read it well enough

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mk2davis
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Galant VR-4 org Post #: 1249124 posted 06/02/20 02:50 PM     Remind Me!  Send Private Message   Edit Post      
I've inquired with horsepowerfreaks.com as to what is going on with my knock sensor. They haven't responded to me in about 2 weeks.

My Chinese one has been shipped, but I don't have an eta.

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mk2davis
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Galant VR-4 org Post #: 1249204 posted 06/21/20 12:11 PM     Remind Me!  Send Private Message   Edit Post      
My new knock sensors came in!!!

Neither of them work. These are the non-OEM style with a shallow nut.

I tested each on the car, both caused the CEL "knock sensor circuit malfunction".

I got these off of Ebay. Different vendors, but identical packaging/box/label.

I will not be experimenting with Ebay knock sensors anymore unless I can find an OEM example. Which sucks because my OEM is suspect.

Anyone that has a lead on an OEM sensor, I'd be very interested.

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mk2davis
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Galant VR-4 org Post #: 1249205 posted 06/21/20 01:13 PM     Remind Me!  Send Private Message   Edit Post      
I'm finding conflicting information, maybe you can help clear this up.

Does a non turbo 1g dsm have a knock sensor? I don't think so, but I have found some application listing that say yes. The same part number (MD141510) is listed on some sites, but still unavailable. This could be a case of inaccurate listings.

If it does have one (big if), would a knock sensor for a 1993 Hyundai Sonata work? That motor is the G4CP, AKA the 4G63. I haven't searched for this Hyundai knock sensor. If it exists, I still don't know if it's sensitive to the same range.

This option seems to be similar to the Miata solution, and I'd LOVE to hear of anyone's opinion or experience.

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Galant VR-4 org Post #: 1249212 posted 06/22/20 02:15 PM     Remind Me!  Send Private Message   Edit Post      
They don't have one. The real tell-tale sign is in the NA ECU. It does not have the knock-board.



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mk2davis
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Galant VR-4 org Post #: 1249217 posted 06/24/20 12:17 PM     Remind Me!  Send Private Message   Edit Post      
Thanks for the info. Looks like I'll be buying some 100 oct and see what that does.

If anyone finds a source for the knock sensor, don't be shy.

We can add factorymitsubishiparts.com to the list of places that don't have it. It is listed as available, but my order was soon cancelled.

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Galant VR-4 org Post #: 1249218 posted 06/24/20 03:29 PM     Remind Me!  Send Private Message   Edit Post      
See the end of this thread (page 3) on Tuners.

tooners knock sensor



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mk2davis
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Galant VR-4 org Post #: 1249228 posted 06/26/20 12:24 PM     Remind Me!  Send Private Message   Edit Post      
Thanks Iceman! It looks like NTK ID0263 is the Mirage plug that is 1" shorter. Clubplug.net was the only site that I could find that had it. The price was decent, $86 delivered. I'll let everyone know my experience.

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Galant VR-4 org Post #: 1249230 posted 06/26/20 06:10 PM     Remind Me!  Send Private Message   Edit Post      
What are the actual differences between all the knock sensors?
For example:
Is it mostly physical, like say protrusion, how far it sticks out, thread diameter/pitch, etc.?
Is there a particular value range that is needed for the ECU (i.e. x reading turns into y signal)?
A particular connector needed? Although this would be the easiest part to adapt...

Asking, because it seems with all the different types of engines out there, must be something else that can be chosen/used once the variables are known.

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Galant VR-4 org Post #: 1249234 posted 06/27/20 11:32 AM     Remind Me!  Send Private Message   Edit Post   
I've always wondered myself why a newer style Mitsu sensor wouldn't work. Especially something like a 2G sensor. But I also know almost zero about the workings of a knock sensor. I just assume the newer sensors are a different style of output. Similar to a Vortex vs Hotwire MAF.



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