nnaidas |
04-29-2015 09:46 AM |
99 Blazer 4.3L Throttle Body rattles/ticks after replacing IAC
Recently I had a rough idle during a cold start--the whole truck would shimmy when I started it. Plus the fuel mixture smelled a little rich on initial start up. Figured it was the IAC that was going bad, so I replaced it. Once replaced it the throttle body had a rattling/ticking sound that could be heard from inside the cab. Drove the blazer around the block to see if it just needed to run for a bit for the rattle to go away. No dice. Thinking it could be a defective IAC, went and got a new one and installed a 2nd new IAC. The rattle/tick didn't go away after I installed the 2nd new IAC, so I reinstalled the original IAC. Rattle/tick was still there. I ensured there weren't any loose wires/components when I installed the IACs, so what could have caused the rattle/tick? I did not remove the throttle body and clean it, so could that be what's causing the noise?
I'm new at performing maintenance on my blazer, so please be patient if you recommend something and I don't understand right away. Thanks.
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