I've tried a bunch of things. I'm open to retrying things. lol

Symptom:

Idle jumps to 1000ish after going into Park position.
(see video 1)

Have to blip throttle to bring it to nominal idle.

Does not do this when at a stop sign or stop light.

Intermittent frequency. Meaning not everytime going into Park. It will stay normally in the 650-700 idle range as one expects.


Things been done:
On 3rd IAC
2nd TPS, I think
Capped all Vac ports on intake, (except brake booster), no change.
Replaced TB gasket
Swapped MAF
Swapped IAT



Video 1 of Symptom

https://goo.gl/photos/S8pb8rz3a7rq4T717



Video 2 of Vacuum at idle only to rule out vac leak

https://goo.gl/photos/39gzVJe9WgqHzDGCA


Video 3 of Vacuum showing hold at 2K rpm

https://goo.gl/photos/uqCqL76KFBrtVLfX6



2000 Ram 1500, 360
New EQ Monster Heads, stock valves 800 miles so far
1.6 RRs

Thanks for any ideas to try out. Let me know of any other info needed.

 

What brand IAC? I had an aftermarket one in my old truck, and it didn't really like it much...

 

1st replacement was O'Reilly's

 

I would give the factory feller a shot. I took a used one out of an old throttle body I had laying around, to replace the brand new one I had in my truck, and all the stalling and idle problems went away.

 

I ended up attempting to measure the TPS voltage. Became unsuccessful b/c I couldn't back probe the harness correctly after determining which was hot and negative.

So I popped in OEM TPS from the spare TB.

Appears to have been RESOLVED.....

 

Excellent.