S10 Blazer throttle block, why does the rotator plate have a hole between the two rivets, what does it do?

Asked by Aug 03, 2016 at 12:32 PM about the 2001 Chevrolet Blazer 2 Door LS 4WD

Question type: Maintenance & Repair

2 Answers

45

It allows air in at idle to keep the engine running. On most new er cars they use an idle air control valve or actuator. The hole in the throttle plate acts in a similar manner.

That helps a lot, now I understand what the mechanic is talking about.

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