Any air temp sensors that share the same range as the FD?
 

I was wondering if there are any air temp sensors out there that share the same ohm range as the FD so that it can be compatible with the PowerFC.
I'm currently working on making complete wiring harnesses from scratch for non-seq and single turbo setups and I'm trying to make it as plug and play as possible for the PowerFC guys. Unfortunately I cannot identify the air temp plug as a Sumitomo or Tyco. It would seem just replacing the sensor and connector all together would be an easier solution.


A bit off of topic but I am getting most of the sensor plugs but there are a few I just cannot get and replacing an air temp sensor with an aftermarket style should be no problem for anyone looking for a nice new high temp wire harness. The only other two that I cannot get is the thermo switch plug, that shouldn't be a problem as I can use a universal switch and I would choose a lower temp rating as well. The other one I cannot get is the TPS connector, that one usually remains in great shape so I can have people send theirs in for fitting of new pins. The most important one that I'm getting in the mail is the one that seems to be everywhere on this harness. It's the connector for the crank angle sensors as well as a bunch more things, I feel like I struck gold with that one. since it is one of the elusive Sumitomo connectors.

There is a fast reacting open element sensor for a triumph motorcycle that's supposed to work well with the power fc. I plan on using one.

Would you happen to know the part number? Anyone else know of other sensors? Looks like there is hope somewhere.

No been trying to find out for sure myself. But i have an 02 955i and will test it's sensor, that should help if it works

awww, crap. I'm an idiot, I miss labeled my connector database and realized that the air temp sensor connector is easy to get. It is the IAC connector I can't get. I suck, sorry.

A promising part number appears to be #T1290510. I ordered one myself and well be testing it. If it works out a friend of mine said he can get them to me for around $35. If anyone else is interested let me know. But first I'm going to make sure it's the right sensor.

They can also be found here for just over $50 shipped.
http://speedsupplies.com/partslistin...00&category=TM

A handy part number that, i knew there was a triumph part as it gets sold on ebay.co.uk as a RIAT (raceing inlet air temp) but its a bit steep.
Thanks

Keep us updated...

I will. As soon as it comes in i'll test it. Then whoever wants to get them through my guy can let me know and i'll order several and pass the lower price on to everyone else.

Be sure to post the resistance for the Triumph AIT sensor at the temperatures used for the tests as posted in the FSM.

Alright I can do that. It won't be too hard to determine if it will work or not.

Bump for update on AIT sensor.

lol it's been 2 days still hasn't come in yet.

Read Forum rules, you are to update every day, even if there is nothing to report. LOL

I'm very interested in this AIT sensor project, keep us posted. :icon_tup:

The sensor should be here today or tomorrow the tracking showed it 60 miles from me

Good news everyone. I got the sensor in today, and I tested it the same way according to the FSM. It has the exact range as the stock sensor except much faster response. I performed the test by filling a water bottle up and sticking a cooking thermometer in, I then cooled or heat the water to the correct temperatures, removed the thermometer, stuck the end of the sensor in and tested the resistance of the sensor. I also took some pictures of the results. If anyone is interested in getting one of these sensors send me a PM. Feel free to ask questions.

Results:

FSM STOCK SENSOR RESISTANCE.............................NEW FAST REACTING SENSOR

@68 *F (20c) 2.20 - 2.70 Ohms..................................Tested @68 *F (20c) = 2.27 Ohms
@176*F (80c) 0.29 - 0.35 Ohms.................................Tested @176*F (80c) = 0.34 Ohms

Pics (CLICK TO ENLARGE):
http://i10.photobucket.com/albums/a1..._DSC003701.jpg

http://i10.photobucket.com/albums/a1...h_DSC00372.jpg

http://i10.photobucket.com/albums/a1...h_DSC00373.jpg


http://i10.photobucket.com/albums/a1..._DSC003741.jpg


http://i10.photobucket.com/albums/a1...h_DSC00376.jpg

Thanks for the info, nice one.
Do you know if the plug is the same as an FD?

Phil

One thing I just though of Brent, the factory sensor has a coating over the outside of the sensor. You might want to remove that via a wire wheel and see the reaction timing after that. Sorry to bring up more work but why cut off another connector and have to tap another hole if you don't necessarily have to...

I have a GM IAT in my shop that I've been meaning to test for a long time. Maybe this will put some "pep" in my step...

My stock sensor has already had the coating removed. Still isn't near as fast as this one. The threads are the same so drilling a hole isn't needed. The connector isn't the same, It uses a bosch plug, same as the bosch injectors. The gm sensors have a different resistance range.

Here is a discussion on the same part and there is a diagram to show the differences http://mazdarotaryclub.com/forums/sh...ht=riat&page=4

Thanks for your research. :icon_tup:
I'm in, sending PM.

Thanks guys. Yeah I found that discussion awhile back when I was looking for a part number on the sensor the first time, but throughout the whole thing they never mentioned one.

More pics and a chart comparing the difference between stock and this sensor. This was grabbed from the link posted above.
http://i10.photobucket.com/albums/a1...ponseCurve.jpg
http://i10.photobucket.com/albums/a1...n/DSC00378.jpg
http://i10.photobucket.com/albums/a1...n/DSC00379.jpg

looks like i'm going to have to pick one of these up once break-in is complete.

it seems like the factory sensor was intentionally slow reacting so that the factory IAT correction tables would be easier to configure for a mass production vehicle. Think about it: a faster reacting sensor heatsoaks more and might have made it trickier for them to tune for smooth hot starts and low emissions. Drastic spikes in IAT readings would require a lot more correction from the closed loop system.

It might have been the technology at the time was in these slow sensors, and when the fast sensors did become available it would cost too much to switch over. Or maybe they saved $1 per vehical and decided it just wasn't cost effective from a manufacturing standpoint.Hard to say, there are at least other vehicles with faster sensors (GM and triumph), but maybe they don't get as hot. In any case the mazda did do some strange things, and if they really wanted to they could have used a faster sensor and probably had better results IMO. That's okay though, improving our cars is what we all love for anyways. If mazda got it perfect the first time what would we all do with our time. :)

Since we have 2 discussions going in 2 sections I'm going to link the other discussion from here in case anyone wants to read over the other thread in the 4rd gen section. https://www.rx7club.com/classifieds-violations-265/fast-reacting-replacement-iat-sensor-found-844553/

Where to buy and how much?

I sent you a PM

i installed one of these the other day. relocated it to the intercooler piping (just before the elbow).

definitely noticed more response on the PFC.

http://carphotos.cardomain.com/ride_...0345_large.jpg

http://carphotos.cardomain.com/ride_...0346_large.jpg

http://carphotos.cardomain.com/ride_...0347_large.jpg

http://carphotos.cardomain.com/ride_...0348_large.jpg

i think i'm gonna weld a nut onto the pipe so it has a stronger mount. the pipe is kind of thin, but it is sealed pretty well right now.

cheers :)

Looks good man

I installed mine in the factory 2nd gen location (TB elbow close to the throttle plates). I actually didn't have to cut up the factory harness at all. The plug for the factory FC IAT sensor uses two mini spade terminals. So I just crimped spades on to the connector pigtail and plugged it into the harness, just like how I had my FD IAT sensor installed.

I haven't gotten to run the car yet though as I was doing a bunch of interior restoration.

Yeah I actually started making these nice lil harness' for them that plugs directly into the stock FD wiring. Now it's a true plug n' play setup.

http://i10.photobucket.com/albums/a1...n/DSC01121.jpg

Plugged into stock FD IAT connector.

http://i10.photobucket.com/albums/a1...n/DSC01122.jpg

Further testing of this sensor here:
https://www.rx7club.com/showthread.p...92#post9739392

Arise!
 

Arghx,

Did you have to rethread the stock location to get the FD IAT sensor to fit? How about the other one? Thanks.

B

Yes, the thread is M10 x 1.25 for both

I would be interested in a sensor and wire, advise.

http://www.wannaspeed.com/index.php?...roducts_id=180

There you go. Make sure you add the pigtail option for true plug and play.

-AzEKnightz

They appear to be sold out, you can get them on eBay http://item.mobileweb.ebay.co.uk/vie...id=34083601562 I have bought from this guy in the past with no problems.
Or get it from a triumph dealer which is what I did.

I ordered one from a Triumph dealer. PN T1290510 It looks a little different, the body is black and the brass goes all the way past the sensor tip with four holes drilled around the circumfrance of the tube aligned with the sensor tip. seems good for protection of the tip.
Probably from an optional OE supplier. It looks fine. I'll will a a quick test to verify reading.

So where is everyone sourcing these from now?

I spoke to Travis at Mossy Creek Cycle. He's going to try carrying one in stock for us. Assuming that it sells, he'll continue to stock it. Seems like a good place to do business ... very helpful on the phone.

http://www.qualitycycleparts.com/T12...p/t1290510.htm


Now, being that I'm not in a hurry (translation I'm cheap) and couldn't find this in stock anywhere I have this on back order:
http://www.bikebandit.com/search?dsN...1290510%7c3%7c

Ebay shows some sensors but I don't know if they will fit or have the right resistance to temp curve:
http://www.ebay.com/sch/i.html?_nkw=...at=0&_from=R40


Are there other options?

PM Driftinjim
I got mine and the pig tail adapter from him

Does anyone know when wiring these things up if polarity matters? I recently installed one and my temps are all over the place. Its 90 degrees out and my PFC is bouncing between -13c to 50c... I am just hoping the connection I made came loose.

polarity doesn't matter. you've got some
thing else going on

For those who want to learn, here is a starter:

http://en.wikipedia.org/wiki/Thermistor

Thanks, I thought that was the case but I wasnt sure. Thanks for the link aswell!

It was a faulty connection, just to follow up.

learning

So where is everybody getting these now? Does wannaspeed not make the adapter for it either anymore?

thewird

See post #39. Bike Bandit came through for me but it took about three weeks. Mosey Creek Cycle has them in stock for about $10 more.

Dudemaaanownsanrx7 is the operator of Wannaspeed. I just picked up the adapter from him. It worked perfectly. At the time it was on the wannaspeed site but you might try PMing him.

I got mine off of Ebay, think I paid $15 bucks for it, just search for triumph air temp sensor, there was about 30 on there when i looked 4 weeks ago. And as far as the harness i just ordered an extra fuel injector clips since i was building a new engine harness anyways.

I'm just looking for female pictail =-) anyone had any luck anywhere?