Warrior project car won't hold idle well

[f85gtron]

I've replaced the iac, reset the ecm and this icm actually works, but it's having trouble catching the idle before it stalls.  Also, the ecm data through the aldl is all wonkey. It seems to me I should be looking at grounding points tomorrow. As well as plugs and wires. Anybody have any suggestions on the idle thing?

[Fierofool]

As I posted in another thread, the timing was right on +10 when I checked it.  Nothing should have changed, but I wonder if the timing was bumped up to 11 or 12 BTC, would it be a solution.  That would bring the idle up a little and shouldn't cause any spark knock. 

As for the wonky stuff coming out of the ECM, that's furrin' stuff to me. 

[Roger]

Vacuum leak? Clogged PCV? Dirty air filter?

Try putting a can of SeaFoam in the tank and run it around awhile.

Maybe run it up I-20 and blow the gunk out?

[f85gtron]

Ok. Today was and wasn't fruitful.
The car idles, idles in gear, but as soon as you put it in park, it dies most of the time. Does good when the ac is on, does good in gear....just when it's placed into park.
I'm not crazy because Pgackerman came by to help and check it out and it did it to him too.

[f85gtron]

I just read a couple posts on Pennocks about this same condition and they solved it by way of replacing a stick open egr. It so happens that I have a known good egr valve sitting here that had no home on my car. I'll swap them tomorrow and have a good look at the one I'll take off

[Fierofool]

I pulled and held vacuum on the egr but that doesn't eliminate carbon keeping it open.  It may only need the pintle and seat cleaned.

[Raydar]

When mine was doing that, I took off the throttle body and cleaned the main bore, throttle plate, and all the passages with brake cleaner.
Be careful. It's easy to squirt yourself in the eye with brake cleaner. Don't ask how I know this.

[f85gtron]

"You'll shot your eye out!"  What movie?

[Fierofool]

Ralphy in "A Christmas Story".

You said PG came by to help.  Do you mean you've driven it from his house to yours, now?  How does it drive and feel?

[pgackerman]

Ralphy in "A Christmas Story".

You said PG came by to help.  Do you mean you've driven it from his house to yours, now?  How does it drive and feel?

Incredible.

...Except for stalling when put in Park. 

[f85gtron]

Looked at the Egr today, I pushed it up and down a few times and four out of five times, it didn't seat the same, the plunger shifted to one side or the other. I replaced it with a known working spare that I had laying around. The gasket is bad and I red copper sealed it. Its curing tonight and I'll try it tomorrow afternoon. Hopefully that will fix idle.
Things left to do:
Sort out the idle
2 cans seafoam, one for the tank, and one for Chinese water torture
Condition the vinyl and leather in the interior
Clean the glass
Clean the motor
Ron

[f85gtron]

Started up the warrior car today after the egr patch cured. It idles like normal, in fact, it idles too high now, so I'll reset the ecm and iac tomorrow after work, purchase and install a proper egr gasket and that should cover it.

[f85gtron]

Got a report from the soldier that the car still won't hold an idle well.
Timing was checked and double checked when Fierofool came down to have a look.
While the egr and gasket where bad, along with a frozen iac, changed out and the condition significantly improved,  I'm thinking now that it may be the pickup coil not providing a strong reference for the icm. Any other thoughts would be mucho helpful.

[TopNotch]

Another possibility is a bad electrical ground. Add another ground from the engine block to the car's frame.

[f85gtron]

Definitely wouldn't hurt!  I'll pick one up.