Join Date: Jun 2005
Location: Conyers/McDonough, GA
TPS, Baro and Map sensors get +5v Y/R and Ground is Green/Orange.
Green/Orange is a sensor ground only for IAT, ECT plus the above three sensors.
Test the +5v to the sensor ground(G/O). Verify continuity back to the ECM connector.
ECM has three Grounds to the "Common Electronics" ground bolt on the front Ignition coil.
One Green wire and two Green/Pink wires--verify continuity from Ground bolt to the ECM terminals.
Engine running in "Failsafe" mode = limp home mode...
Many early 1800 have had FPR fail. 1800 runs extremely rich when FPR fails.
Lack of vacuum to FPR looks like WOT so fuel line pressure is high = richer mixture.
2005 1300c Red, Mustang seat, HK 2.5 straights. Leds for safety-front & back. 179,444 miles of smiles
Last edited by Hans&Feet; 11-17-2016 at 10:03 AM.