dbanks12

Checked for vacuum leaks, everything good. Also took out the EGR valve and it is moving good, cleaned it just for good measure. There is a module between the lower throttle body vacuum and the EGR that I took out and cleaned as well, that's okay. The TBI throttle body's don't have a mass air flow sensor they have a air idle control module that screws into the throttle body just behind the throttle position sensor and sometimes get plugged or stuck. I took that out sprayed carb cleaner into the hole and it's clear as well as the sensor holding it vertical like the book says.

I checked voltage on the throttle position sensor and it's within range. I also checked for ohms on the idle air control module, the book asks for 2 measurements at the different posts and says they should be infinite, however I have a digital meter and one side was -10.5 and the other side was-105. Not to sure what they mean by infinite?

Still if I unplug the vacuum hose to the map sensor idle comes up to normal and it runs great until I put it in gear.I thought it may be a fuel pump because I ran it low and kicked the tank once to get it going but fuel is okay and pump is running. The vacuum hoses are in good shape, I didn't try taking the hose off of the brake booster but someone replaced all the hoses under the hood, like new.Any other thoughts?