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I've checked it a few times and it's always closed.
After cleaning the TB and the plate/butterfly, that thing was spotless. It looked brand new. I used TB cleaner and a toothbrush. I've also done what you did, put the car in neutral and mashed the gas and that did nothing. In fact, if anything it made it go higher.
Not sure about how to do that. It seems to be at the stop, but I'll re check. Don't know how to remove the cables. I'll check and see if there are any videos.
Yes, I'm in very hot and sunny Florida.
Yes, there is one other wire, a pink one, that is a little scraped up. Will fix that one too. I've gone over a lot of stuff, but will do it again.
PVC is good and those hoses were replaced by the first shop that looked at it. I'll check the MAP. I checked the brake booster 90° plastic adapter and hose and even sprayed them with starting fluid. No real change of the idle. I can't get my fingers in there to check the anti backfire valve. But, I did spray it down with starting fluid and there was no difference in the idle. I did spray the starting fluid between the brake booster and the TB and I did notice the idle get higher in that area. Closer to the TB. I ran out of starting fluid though. I was thinking of removing the TB again and this time remove the spacer and replace that O Ring. I didn't take the spacer off the first time. Also, that's the one area where the smoke was coming out when they did the smoke test.
That is good to know @rockfangd I am sitting in bed with the 96 FSM now.
@jndnaps check the pcv hose for cracks, the PVC for free movement. The MAP has a vacuum connection to the intake check it
Check the brake booster 90° plastic adapter and hose for brakes.
This symptom happened before you took the TB off and you replaced the oring and seal correct.
I still want you to check the anti-backfire valve in the intake
The attached photo, is out of the FSM. It is a list of places that vacuum leaks occur some of which I mentioned above.
Sorry for the delay with my posts. Work too much.
Great to hear you found the 1634 problem. I hope you closely inspected the rest of those wires in that plug. As soon as I saw the 0 on that pin that nailed it.
You are doing very well. We will get this.
Long shot I know but it bears to mention that vacuum leaks do not always cause a lean code.
That issue you resolved could cause all kinds of goofy issues.
I highly suggest that you go over every vacuum hose, electrical connector, and bolt or nut that was touched throughout the process.
If you had a high idle problem that was IAC related it should throw a code also. Be patient as you are making progress
With the engine off.
Now that all P codes are gone, we can consider other issues
I am pretty confident that if this were a vacuum leak that would cause a 3,300 rpm idle, you would have lean codes. @Logan do you agree with this? Have you seen high idle conditions caused by a vacuum leak that didn't cause a lean code?
I have no question seen gunk, hold the throttle plate open and have an idle so high it was hard to hold back and dangerous. Typically when that happened, I would QUICKLY, VERY QUICKLY in neutral stomp the accelerator pedal to the floor and release it quickly to get it to seat and slow down. My 96, would occasionally hang open from gunk on the throttle plate and have a high idle. The first time it happened I got a P1525 Throttle Body Service Required code
With no P codes, that precludes electrical connections not connected to say your IAC.
I dont necessarily believe the mechanic with his smoke test because if he did uncover a vacuum leak where is the lean code?
Check if the throttle linkage is on the stop and the cruise control cable is free and loose. Take the cables off if you have to and move the TB by hand to see if its binding or hanging.
Patience, you are doing good. If you want to call it a day, that's fine. Let me know what you find.
Where are you florida?
New Guy here.I owned a 96 Eldorado years ago and loved it.It was stolen.I bought an 03 Mercury Marauder brand new.I drove it for 13 years.I did a lot of modifications to that car,very fast..In 2016 I bought a new Challenger,V6 305HP.I never really adapted to the car and wanted that Caddy ride....I just bought an 02 Eldorado.Love it..It needs some love..I'll be asking questions for sure.Thanks for having me.