2000 maxima IAC problems- no idle, 505 error code

[bigblue]

Title pretty much says it all. My friend's car- he hit a raccoon while driving one night and then the car lost the ability to idle. I finally looked at it yesterday and while I can hold up the idle manually with the throttle, it definitely wants to keep stalling and seems indicative of a vacuum leak or IAC problem. It is also setting an IAC code (PO505 I believe)

Just as a quick experiment, I cleared codes, restarted it while holding the idle manually and it still instantly set that code again (while not having gotten an opportunity to idle badly yet) so I'm thinking the IAC is bad or very clogged.

I searched around for vacuum leaks but couldn't find anything obvious, all the hoses are connected properly.

I couldn't find the IAC by looking for it. Is it underneath the throttle body, in a strange location or am I just oblivious? Are IAC's common to fail on these engines?

I don't have much experience with these cars. Is there a common area to look for a vacuum leak?

[driftingmy240sx]

looking at that engine from the drivers side the iac is to the right of throtttle body (on ones with steel intake manifold) by the fire wall adn will have a brown and purple connector. i believe it is in the same place with the plastic intake manifolds also.

[NM50]

The motor mounts are probably shorted.The are actuated from the AAC circuit of the PCM. What sucks is that you must disconnect or replace the mounts change the AAC valve and the PCM. I have never had either of the latter components survive the mount shorting.

[bigblue]

The motor mounts are probably shorted.The are actuated from the AAC circuit of the PCM. What sucks is that you must disconnect or replace the mounts change the AAC valve and the PCM. I have never had either of the latter components survive the mount shorting.

Do you mean the IAC motor mounts or the actual engine mounts? You think the PCM could be bad too? Which is the AAC valve? That seems extreme but then again, I'm assuming you know this application much better than I do. Please explain with a bit more detail.

[driftingmy240sx]

the maxima uses electrinicall actuated engine mounts that stiffen based on load. however if a mount fails it will generally set a code for itself. if a n electrnic portion of the mount failes it burns out the driver in the ecm. I am a Master Nissan Tech and would recommend replacing the iac and resetting the base idle.