The listing, THEXTON 398 GM IACV Tester has ended.
Brand new, still in package.
* Quick, accurate, easy testing of idle air control valve
* Tests IACV for proper idle speed response
* Holds engine rpm for idle adjustment, cylinder balance tests, fuel system cleaning and more
* For use on GM TBI/PFI/MFI fuel systems Chrysler, AMC vehicles with automatic idle speed