Project Unhack Job 93 Mazda B2200

Well, it's warm again and time to work. My brother got a full time job so he can buy parts now without saving up for 6 months at a time. lol. Parts are being ordered so we can hopefully by 2015 have it on the road. I've been busy working on a gas saver for the wife. 96 Acura Integra with a b18 and automatic, so far I've replaced a balljoint, starter, alternator, drivers CV shaft, and now trying to figure out a idle issue it has. At start up it runs almost 2000 rpm's, then after a minute it drops between 1500 and 2000 and jumps back and forth like your reving it up. Slowly drops down to like 1000 after a while. Anybody know much about these cars? And I sold my fullsize 4wd and picked up a 93 s10 with a 305 and a 5 speed to play around with so my time has been spent between the two.

And pictures of my s10

check the AIC valve on the intake manifold... may just need cleaning

Cleaned it the other day and nothing, guess I will have to replace it.

MAF or speed density? A bad MAF sensor could cause a hunt at idle. Clean the throttle plate to.

Think I'll pull the entire IAC system and clean it and the throttle body up next time I get a chance. It's a low cost build since other than the starter it was free to me. lol