Recent content by Fast Doc

A little feedback if it helps anyone else. The issue was intermittent and returned worse than before and was very frustrating. I threw in the towel and brought it to a mechanic. He replaced the throttle position sensor and that fixed the problem. I didn't even see a TPS in the shop manual. Oh...

Thank you for your time and expertise. I'll change the sensor if this has not fixed it; you were a big help have a great day. Bill

https://www.amazon.com/photos/shared/JZdHpymdT9-OqdeX9nTcmA.zLH1E3GFB-vlmUkzVVqi0B Does anybody know what this thing is that I am pointing to?

https://www.amazon.com/photos/shared/ZzOFX4rBTsigITXWBT3L1A.i5lStEhW0GSfKpIpDHSaQp This is the end of the hose that I am pretty sure was supposed to be on the mystery part.

https://www.amazon.com/photos/shared/NXyYrqujTIiUtcrKO9V2CA.yvuqOba7ofHeFJ5k6usjdh This is the mystery part that was disconnected.

https://www.amazon.com/photos/shared/E543TWyzTpeVxmHJTIgniA.iB_plZCLxPX6o9KfwoQ9Fz Idle speed while warm in drive.

https://www.amazon.com/photos/shared/IRyNIt3MRIa2MuNvrs_y1A.S-kdbGOIQg7ratJIFBVTs1 Idle speed while warm in neutral.

https://www.amazon.com/photos/shared/I0bSZvOiTkqY7ruMLb63sQ.4Z9DXdcqPyOcIbafsIX1ur Original interior. Pretty nice for 1992.

https://www.amazon.com/photos/shared/tBBZzBxJT-uduazSvnHECw.MJPpe2k8rxPwOd9TkQS8fz The pickup is called SLOWDOC. I have a 500 horse power sports sedan that’s called FASTDOC. ?

https://www.amazon.com/photos/shared/d9lnBuVJQoKDG7hoAdjrTg.ixiP-KbvTqYHmSYap38Chb There’s probably a better way to share pictures, but this is what I figured out so far. I thought you may enjoy seeing the old truck.

Great, now I have to figure out how to attach pictures LOL

OK Ron, here’s an update. Your information has been very helpful. I went out to the truck, and started looking around for the sensor. Before I found the sensor, I found a disconnected vacuum hose! I don’t know if this was there all the time, or if it’s something also that just happened...

Again Ron, I am grateful for your help. I think you will help me get to the bottom of this. I did change the PCV valve sometime ago, and it makes the normal rattling sound when I shake it but it is cheap maybe I could try another one. I didn’t ask the mechanic to change the thermostat, I agree...

Even adjusting my expectations for how low the idle should be, it still occasionally stays too fast, 1000 RPM in gear. 1500 or so in neutral. But again, unpredictable.

Thank you for the thoughtful detailed and helpful reply! This brings up another thing I forgot to mention, at some point my mechanic replaced my thermostat with one that runs the engine at a cooler temperature. If I recall though, I had the idle issue before that change. Could that be part of...