: IAC Counts

01-27-08, 03:10 PM
Is there a way to monitor IAC counts using DIC? Trying to troubleshoot decel stall problem on 99SLS with 71K miles.

01-27-08, 03:45 PM
Don't think so. Pull your DIC Codes and look for P0300 series....near stall, P0335/6 and P0385/6.....CKP (CranKshaft Position sensor fault).

The ol' TB cleaning bugaboo, also.

I'm not a Tech II operator, but maybe a shop could set one up to monitor IAC function during a drive condition.

01-27-08, 03:59 PM

Thanks for reply; I do get a stall/near stall code, but no CKP codes. TB was cleaned recently by dealer(problem predates this cleaning). This week I plan to clean TB and IAC passages myself just to be sure, then go down AJ's previously published check list.

01-27-08, 04:46 PM
Have you tried cleaning the EGR valve? It should set a DTC, but can't hurt to clean it anyway.

01-27-08, 05:52 PM
I have not; I'll do that too. Thanks