Having problems with your 1999 Mitsubishi Montero Sport ?
My 99 montero kind of pulls back when I let off the gas. The code says p0505 I changed the iac, tps, coilpacks wires plugs. Air filter . And like I said we I'm pressing the gas a let off on it , it pulls back. Now I can be driving and the idling jumps the gose back to normal.
If this code set there is only three possible reason, The IAC motot itself is faulty,a open or short in the wiring bad intermittent connection,Or PCM. My opinion for this your not describing a IAC problem.Just beacause the code comes up just points you in that direction,The ECM reads rationality,and logic,open shorts and ground, You got a false air somewhere.Go to the MAF,Is the duct torn or loose? How about the EGR? It can be getting stuck open and not closing properly. Your vehicle is equipt with a MDP sensor (manifold differential pressure sensor).Located on top of the intake manifold plenum. This monitor the EGR operation. The MDP has a tendency to plug.Inspect and see if its plugged from the vacuum orfice.
Repair Help & Product Troubleshooting for 1999 Mitsubishi Montero Sport
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