Originally Posted by captain78
If you look close there's something like a 1/4in spacer between both. The pic you posted will help I didn't know you could adjust the iac on that plate like that. And I made a few calls to some dyno tune shops. And they (3) all said same thing. Except one. All said tps is bad. But one also said because the problem existed before mods it has got to do with something I didn't change. I told him only thing that I didn't change yet is the fuel pump. And he stopped me in mid sentence and said bingo that's your problem change it and the filter. Then told me that the O2 sensors and fuel pump is controlled by the computer the o2 sensors monitor air fuel and if computer is reading that car needs more gas then it tells pump to pump more but if pump is maxed it tried to adjust tps but tps cannot adjust that much so it throughs out the tps is out of range code.
Don't you have a 190 lph or bigger pump on there already?
Before I changed the pump I'd see what my fuel pressure was doing.
If it is keeping good pressure at idle and WOT, then your problem is elsewhere.
I can't argue or disagree with what he said about the fuel pump for 100% sure, but I don't think it is controlled by the computer like that. The computer controls the pulse width of the injectors and that is how it adds more fuel if it is needed.
It's up to the pump to supply adequate fuel pressure and the computer cannot adjust it up or down in pressure or flow other than through the pulse width of the injectors, so that's why I think you should just ensure the pump is providing enough pressure at idle and WOT before you change it out.