I've been doing some thinking, searching, and studying...and I think I want to do the TPS mod. Improved throttle response sounds like something I could use; while I know the power is there, it seems like I have to push the throttle down too far to get it...even though the engine doesn't seem to be working hard. Too much pedal travel, I guess. I don't have a scan tool or a multimeter, but I can probably pick up a multimeter for $5 at Wal-Mart, unless there is a better idea?
Anyway, I read the techinfo article and the geocities link it contained, so I have a good idea how to do it. Like anything else I do to my car though, I want to be absolutely certain of what I am doing.
First: If I were to use a multimeter, I would need to expose the wires, right?
Then: In this thread: http://www.bonnevilleclub.com/forum/...hlight=tps+mod
, a member said: "Once you do it, you will have to tweak it every so often, when before I never had to mess with it. I like low maintenance items." Is that true, that it has to be continually tweaked?
And: In this thread: http://www.bonnevilleclub.com/forum/...hlight=tps+mod
, a member had problems with his idle speed. I understand that the first few startups may have problems, but he continued to have them. Someone said that he shouldn't mess with the idle screw...even though the instructions specifically say to do so. I could really use some help here...exactly what did this member do wrong? I need to know so that I don't do it myself.
Next: I want to ensure that I'm not "priming" my engine any while doing this. Messing with the throttle linkage and turning the valve to full throttle to adjust my sensor won't pump gas into the cylinders or flood my engine, will it? I heard my gas pedal "pop" when I was inspecting my engine for this procedure earlier, so I know it'* the same as if I was pumping the pedal inside the car. I just want to make sure nothing will blow up.
And finally: I read somewhere in a thread that pertained to TPS modification that disconnecting the battery for 30 minutes will reset the PCM. Will this eliminate the initial fast idle issue? If it doesn't, how long will I have to deal with the fast idle? If I go around for one drive for about 20-30 minutes will it be eliminated?
I also want to run through the procedure very quickly to make sure I will do it right:
1. Remove TPS, drill out metal inserts and then bore out holes to 1/4".
2. Reattach TPS loosely with washers, and connect multimeter/scantool.
3. Turn ignition key to on, but not start.
4. Turn linkage and TB valve to full throttle, hold there and note voltage reading on multimeter/scantool.
5. Turn sensor until reading ~4.35 volts at full throttle and then attach securely. Release throttle valve.
6. Loosen idle screw retaining nut and note the volts at idle.
7. Tighten or loosen screw until reading ~0.7 volts.
8. Tighten retaining nut.
9. Unplug battery for 30 minutes, then reconnect (if that makes any difference whatsoever). And I'm done.
Is that right? Thanks so much for the help.
Sorry for all the questions, but I really need all of these answered before I feel comfortable doing this...I'm very careful when it comes to my car(*).