I pulled the ECU feed cable to the TPS and tested it with the engine running. A is reading a solid 5.00 Volts to ground and 5.00 volts to pin B. Pin B is grounded (reads 13.3 Ohms to Bat. ground, 0.0 volts to ground).
Now for the realy interesting find of the day. While getting your answer I discovered that I had the connectors reversed, so pin A was connected to pin C, and Pin B to Pin B. No idea how I missed this before, or how long or often it has been crossed over like this. I did not realise this connector could be reversed and still connect.
So I drove it a few miles and the performance has changed considerably. At first the system was immediately idling much faster, like 1200 rpm. I turned off the ignition and restarted it after 10 seconds off time, and the idle slowed back down to 700 rpm. Now it is cycling between 800 and 450 rpm at idle and 700 to 450 in drive while idling. Not as bad as before. It also has more power and acceleration now, but still has some power, acceleration, occasional stumble on acceleration and idle cycling issues, just not nearly as bad as before.
I suspect from my findings today that many others here have inadvertently hooked the ECU to TPS sensor connector up backwards like I did, as they have reported similar, seemingly unsolvable problems idle problems. So check your ECU to TPS connections!!!!!
In my case the A-B-C is visable on one connector while PED is visable on the other connector when attached properly. In other words the A-B-C marking is top side on one connector and bottom side on the other connector when A-A, B-B, and C-C are connected correctly. This seems wrong to me that they are not on the same side, meaning I think they should be both display side up when connected correctly, but perhaps the new sensor I installed last year has the connector on backwards from the factory??????
:wow:
I may need to check the wires on both sides more closely to be sure, but since the performance is so noticably improved, I suspect I now have the connectors and wires attached properly on the ECU to TPS connection.