I have a 96 Bighorn (last of the EFI models???) and am having real problems with the TPS. The car misses /idles badly and check engine light comes on. Everything I have read online points to the TPS unit. Biggest problem right now... where is it? One guy has told me its in the throttle (I cant see it but there is a small round black thing but more than three wires) someone else has said on top of the injector pump but nothing on top, although there is something on the side but I assume that is the electrical part of the pump control? The engine is a 4JG2I UBS 69 gw whatever all that means. Does anyone have an idea where it is, and even better a picture or exploded view of where is it and what it looks like. If I can locate it I can sort it. Meanwhile I fear its going to damage the engine. I also understand it is fairly responsible for the engine overheating and the stuck in third when its hot problem. At least it certainly doesnt help.
Can anyone help me