Strange Idling on S13 redtop

[jupiterl]

My S13 redtop is idling strange. Everytime when I come to a stop, the engine rev up to 2200rpm for 5 sec., then drop down to 1500rpm, then shoot back up to 2200rpm. This happen 4 to 5 times, and it will come back to 850. What can lead to his ? I tried to adjust the timing, both retard and advance, but still the same problem. I also adjust the idling valve, but it didn't do anything at all. What else could it be ? TPS ?

Need some help. Thanks.

[Cheng]

Mine does the same thing, but for some reason when i put my power steering back on. I ideal at 800-900, but w/out P/S it was like 1500 constantly so i dunno.

[zero.counter]

Check and clean the MAF, MAF connectors, AIV, AIV connectors, the air regulator unit, corroded connectors on the injectors.

[jupiterl]

thanks for the advise. I will check them out tomorrow and see what happen.