Unplugged the iac, threw a code obviously. Idle was definitely much lower but wasn't smooth

 

Haven't look in for a while. Glad the manifold went well. What happened that made the idle increase? Did you do some maintenance just before?

 

It just started idling high, hadn't changed anything or messed with anything

 

Check the timing.

 

So it turned up being the Purge solenoid for the evap system. Pretty sure it was stuck open. Therefore causing a vacuum leak. Just now put a new one on along with a new map sensor. Oddly enough the map connection was faced in the opposite direction. Any reason for this? For the vapor canister how exactly does one replace the filter inside? Is it really even necessary to replace?

 

Onemore94dak how do I go about checking the timing? I have the Haynes manual but it's vague as hell. I know a timing kit is only around 40 bucks to replace the chain, tensioner and sprockets. So it's not a big investment. But I don't know how much labor is involved

 

Step 0: Ditch the Haynes and pick up the Chrysler Factory Service Manual. Good news, if you pick the FAQ sticky at the top of the forum message list, about 30%-40% down is a link to a download for the FSM.

That will show you what you need to do to change out the gear set.

RwP

 

I'd follow Ralph's advice, he has forgotten more than I know.
The timing itself after you set it mechanically is controlled by the computer. My thought for checking it was that the chain may have worn and jumped a tooth. So you'd save the effort of changing it for a bit if the timing was OK. You can't "time" the magnum with the distributor like you do a regular engine. Which makes finding top dead center very important when you do the timing chain.
My 94 3.9 was idling very high. It turns out a PO had removed the plug that blocks you from messing with the idle on the Throttle Body. I turned it down, I forget whether I did it before or after I did the plenum, but it idles fine now. Now I remember I did it before the plenum. It was very high and I turned it down to around 7-800 on the tack It idles at 4-600 on the tack after the plenum repair. The tach's on these are not great.

 

When did Chrysler swap the 2.2/2.5 to timing chain?? I was pretty sure the PO said it was a 2.5??
The belts are supposed to be changed every 80,000 miles. And not knowing when it was changed last, it wouldn't hurt to do it. They are known to rip the cogs off when they get old/worn. I used to change them in about 15 minutes on my old 87 that had the 2.2 with a 5 speed.

 

Got me! I hadn't looked at the first post in a while and just assumed this was a 5.2.