98blackbell Posted January 18, 2016 Share Posted January 18, 2016 Reading at 0 throttle is 220 and at full throttle is 1238. Is that correct? Keep losing signal, have traced it through a spade connector that was loose. Once I have reset the signals is as above readings. Throttle application seems accelerated, as in 1/3 is half. Quote Link to comment Share on other sites More sharing options...
Namor Posted January 18, 2016 Share Posted January 18, 2016 It isn't supposed to be specific values, you set it up and then calibrate it. You have calibrate yours so that it recognizes 220 as closed throttle and 1238 as full throttle. Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted February 1, 2016 Share Posted February 1, 2016 And those numbers are a fairly typical range for an MS2 or MS3. Quote Link to comment Share on other sites More sharing options...
Chickenman Posted February 13, 2016 Share Posted February 13, 2016 (edited) Throttle application seems accelerated, as in 1/3 is half. The TPS has nothing to do with the feel of Throttle sensitivity. TB sizing and linkage do. Send us a picture and specs of your TB and linkage. Most problems with a TB that is too sensitive have to do with improper linkage angles or too large of a TB diameter for the engine size. Cable linkages are usually " easier " to drive than the OEM Pushrod style, because you can use a rotary style cam. These cams can also be made asymmetrical, allowing a slow gradual pull at first then ramping up later in the pedal travel. http://victorylibrary.com/mopar/TB-linkage-c.htm Click on thumbnails to enlarge: Edited February 14, 2016 by Chickenman Quote Link to comment Share on other sites More sharing options...
98blackbell Posted February 14, 2016 Author Share Posted February 14, 2016 Thanks for the info. We are using a Nissan 240sx throttle body. Throttle cable is a universal cable in sheath. Has the boxed ended input into the 240sx. Gas pedal arm is attached to the cable. Here are a few pictures. Kinda gives idea on what we did to change the linkage over to a cable and modern cam gear drive. Quote Link to comment Share on other sites More sharing options...
Chickenman Posted February 14, 2016 Share Posted February 14, 2016 (edited) Doesn't look too bad. Is that the stock cable mounting location? You may want to change the angle of the cable a bit, maybe raise it up some so it's not pulling at such an acute angle relative to the bell-crank. That may smooth out the first few degrees of travel. You could also try using the outer Cam, with has a larger radius and should smooth things out a bit. All sorts of asymmetrical throttle cams available on E-Bay. BMW also have a very asymmetrical Bell-crank that you could adapt. Click on picture to enlarge: Edited February 14, 2016 by Chickenman Quote Link to comment Share on other sites More sharing options...
98blackbell Posted April 3, 2016 Author Share Posted April 3, 2016 Doesn't look too bad. Is that the stock cable mounting location? You may want to change the angle of the cable a bit, maybe raise it up some so it's not pulling at such an acute angle relative to the bell-crank. That may smooth out the first few degrees of travel. You could also try using the outer Cam, with has a larger radius and should smooth things out a bit. All sorts of asymmetrical throttle cams available on E-Bay. BMW also have a very asymmetrical Bell-crank that you could adapt. Click on picture to enlarge: Thanks for the idea, son is moving to Georgia close to me and will be working on it more with tooquick260 Quote Link to comment Share on other sites More sharing options...
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