is my iac bad?

[mdwyer]

where is the tps?

Didn't you get the memo?


The Throttle Position Sensor is on page 6E-450 of the tech manual. You know where the pulleys for the throttle and cruise control cables connect? On the left of the throttle body? Imagine the throttle plate rod going through the center of the throttle body from those pulleys, and exiting the right-hand side. The TPS is the sensor on the other end of that rod.

The tech manual just says it should read .85V at closed throttle, but it doesn't say much else.

[AndyC]

I just checked my IAC and that was pretty clean. I knew it was a Vacuum leak. I could hear it and it appears that my lower common chamber - intake manifold gasket is cracked. Looks like the gasket material is hard plastic-ish and has cracked. Might have hardened from heat ? Who knows. Well a quick fix was some of that silicon insta gasket stuff. I filled the cracks and I'll see tomorrow it that fixed it.
The trouble codes that I pulled from my Scan Gauge II was a 171 originally from the weekend trip and then I cleared them. Before I found the second leak a 171 came up again. Final time no codes came up.