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I adjusted the idle as follows:Let the engine warm up to full operating temperatureTurned the engine offI jumped terminals A & B on the ALDLTurned the key switch to "ON"Waited about 30 secondsRemoved the harness connector from the IACTurned the key switched to "OFF"Removed jumper from ALDLStarted the engineSet the RPM to about 650 550 with transmission in drive using the torx set screwTurned the engine back offRemoved the negative terminal from the battery for about five minutes, then reattachedConnected the IAC harnessStarted engine to test.
I did notice if I unplugged the connector under the brake booster for setting the base timing the idle comes down to about 900 rpm in park with the timing at 0°. When the connector is plugged in, the timing is all the up towards the last notch (15° or 20°?). Can't see the numbers on the pointer very well.
I tried unplugging both the MAP sensor and the EGR vacuum line.... The MAP sensor seemed to drop the idle about 100 rpm briefly, but then came back up to 1,200 where it always wants to run.I don't have a scanner to check the IAC.
I don't have a fuel pressure tester. What is one that will fit? It was a bit tough to get the fuel lines to mate up with the TBI with the new intake manifold since it's a bit different. I've never used a fuel pressure tester before and I'm not sure how I would fit one in there.