# My lacetti revs up in a strange way

**URL:** <https://community.cartalk.com/t/my-lacetti-revs-up-in-a-strange-way/169746>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, aveo\
**Created:** [September 9, 2020, 9:00am UTC](https://community.cartalk.com/t/my-lacetti-revs-up-in-a-strange-way/169746 "2020-09-09T09:00:48Z")\
**Posts on this page:** 1\
**Showing post:** 15

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**Author:** ![Andreas-15](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@Andreas-15](https://community.cartalk.com/u/Andreas-15)\
**Post date:** [September 13, 2020, 9:32am UTC](https://community.cartalk.com/t/my-lacetti-revs-up-in-a-strange-way/169746/15 "2020-09-13T09:32:17Z")

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Hello guys. I have a chevrolet lacetti which is fluctuating rpm very strangely and very high at idle and low speeds. The problem happened after a head gasket replacement. The car has new head gasket. Egr. Crankshaft sensor. Camshaft sensor. Spark plugs. Spark plug wires. Spark plug coil. New gaskets almost everywhere. I tried to find a vacuum leak but nothing. When i connect the code reader it doesn’t find any trouble codes. I did notice though that when i accelerate in neutral that my maf sensor is showing the pressure dropping instead of increasing. I disconnected the maf sensor and the car almost runs normal. It does jerk a bit on low speeds but i am assuming is because it doesn’t have the maf sensor connected. Any ideas what it could be?. Is it a maf sensor faulty? It wasn’t before the head gasket replacement.

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