Ok. Thanks for that advice. I am thinking replacing it would be best. The symptoms have not just suddenly appeared, but have steadily been getting worse, and that could be due to the increase in rust on the pintle.
I see one in FT's eBay listing, 'AC5 IAC fits Chevrolet, Buick, Pontiac', which looks exactly like it, except I cannot see if it has the 4 pins, but it probably does. The part will cost me about $145 in Australia, but much cheaper there in the US if I can wait for it.
I see one in FT's eBay listing, 'AC5 IAC fits Chevrolet, Buick, Pontiac', which looks exactly like it, except I cannot see if it has the 4 pins, but it probably does. The part will cost me about $145 in Australia, but much cheaper there in the US if I can wait for it.