ALFAGTV6.COM

Hey everyone, this topic came up a while ago, but I'm looking for a few more details. I've heard that the Volvo 850 tps (sensor, not switch) will fit our V6 throttle bodies. Does anybody have a specific part number? I bought what I thought was the Volvo 850 tps, but it turned out to be a switch and not a sensor (Bosch part # 0 280 122 001).

FYI, if you want to install the flat-shifting feature of Msn-E, you need a tp sensor, not switch. This is because it needs the tp information to turn on the rev-limiting feature for flat-shifting.

Thanks,
Bill in Maryland

I have been looking into this topic myself. Michael posted that a tps from a porsche 944 turbo will work. I think it even fits.
I made a list of potential candidates based on the catalog at my local auto parts store. They are all bosch six pin units. I think that they must be sensors (not switches) if they need six pins, but what do I know. I also do not know which way that they rotate, but here goes...

Porsche 86-89, 91-92; 0 280 120 107; $61 at autozone (the cheapest on the list). autozone part number tps-422
audi 92-99; 0 280 120 431 078 133 154
bmw 87-93; 0 280 120 402 13 63 1 707 320
audi 90-91; 0 280 120 407
porsche 89-92; 0 280 120 417
bmw 88-93; 0 280 120 406 13 63 1 708 605
audi 90; 0 280 120 424
bmw 92; 0 280 120 404
audi 92; 0 280 120 428

One more option in the first post of this link:
http://www.alfagtv6.com/bb/viewtopic.php?t=767

An alternative is to get the TPS from a 95 Chevy Lumina (Wells part number TPS140), around 40 US$ new, or less from a junkyard. If you take apart the stock GTV6 throttle switch, you can use it as a mouning surface for the Lumina one. You wire the Chevy part to the Bosch connector, and it works great with no mods to the throttle body whatsoever.

Pic here:
http://www.realemotorsports.com/rd/mega ... tpsmod.jpg

Ugly, but very reliable. You can even RTV the original TPS cover back on over it, if you want, or just seal the whole thing up.

-Al

Nice work Al
I bet you could get one of those at a junk yard for $5.
I am looking at going to a 75mm GM throttle body and I could most likely use one of those. I bet they have Luminas as far as the eye can see at Northern Wisconsin junk yards
Thanks

Hey Zambon and Al, thanks for posting some options for throttle position sensors. I had been pulling my hair out for months trying to find an alternative.

Zambon, for those off-the-shelf Bosch TPS's, do they require machine the throttle shaft to be a little shorter? If not, I'll probably go with the generic Advance Auto TPS. Otherwise, before machining the shaft, I think I might try converting a spare TPS to one with the Chevy innards.

And I'm looking forward to combining enrichment via MAP and TPS.

Thanks all!

Bill in Maryland

Hi-
It was funny how I decided on a Lumina TPS. I was messing with dis-assembled rheostats, pots, etc., trying to figure out how to shoehorn one into the stock throttle switch housing, when I was suddenly posessed by an urge to see what kind of TPS was on my wife's Lumina (yes, we owned one of those pieces of crap once). SO . . . I went over, identified, and removed it from her car (no, I did not ask first), and discovered (to my shock), that it would fit within the confines of the Bosch TPS housing (mostly). After I carefully replaced it, I went to the autoparts store and got one of my own!!!
-Al