RPM oscillation between 1800-2700 RPM - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

sparaz · 08-03-2010, 05:01 PM

My car's RPMs jump up and the power radically shifts upward eratically when in 3rd to 6th gear from the top end of the 1k's to the top end of the 2ks and then doesnt seem to be as defined past that range in any gear (it may be prevelant in 1st and 2nd but those gears go by so quick its not an issue).
If I am just floating on a straight road at the same speed in that range it shifts slightly but not much, but the minute I give it more peddle pressure the shift goes up and down erratically. Additionally, if i'm in cruise control at that range and I go up a slight incline where the system has to add power to keep at speed... the cruise control will shut out if the power spikes hit it just right.

Extremely annoying and it makes it sound like the car is revveing higher while in gear randomly... It's almost embarassing when getting up to speed in an area. Anyone have a clue what this could be?

I have recently had this issue appear out of nowhere and it does not trigger the CEL... The dealership is telling me to wait till next week when they are not busy as on the saturday I tried to take it in they couldn't figure it out though they drove it with me and agreed that it was happening.

HBMike · 08-06-2010, 04:19 PM

Possible vacuum leak, poke your head under the hood and see if you hear a hissing noise from any hoses.

sparaz · 08-08-2010, 01:55 AM

Should I be able to hear it while it's idle? Will try it out tomorrow, thanks.

ArkySS · 09-27-2010, 09:24 PM

Wouldn't a vacuum leak throw a code?

08-03-2010, 05:01 PM	#1
sparaz 867-5309 Drives: 2010 CMG RS & 86 black Z28 3rd gen Join Date: Feb 2010 Location: Redondo Beach, L.A. County, California Posts: 295	RPM oscillation between 1800-2700 RPM My car's RPMs jump up and the power radically shifts upward eratically when in 3rd to 6th gear from the top end of the 1k's to the top end of the 2ks and then doesnt seem to be as defined past that range in any gear (it may be prevelant in 1st and 2nd but those gears go by so quick its not an issue). If I am just floating on a straight road at the same speed in that range it shifts slightly but not much, but the minute I give it more peddle pressure the shift goes up and down erratically. Additionally, if i'm in cruise control at that range and I go up a slight incline where the system has to add power to keep at speed... the cruise control will shut out if the power spikes hit it just right. Extremely annoying and it makes it sound like the car is revveing higher while in gear randomly... It's almost embarassing when getting up to speed in an area. Anyone have a clue what this could be? I have recently had this issue appear out of nowhere and it does not trigger the CEL... The dealership is telling me to wait till next week when they are not busy as on the saturday I tried to take it in they couldn't figure it out though they drove it with me and agreed that it was happening.

08-06-2010, 04:19 PM	#2
HBMike Drives: 2010 Synergy Green HBR Join Date: Aug 2010 Location: Irvine Posts: 103 View My Garage	Possible vacuum leak, poke your head under the hood and see if you hear a hissing noise from any hoses. __________________ Wilwood 6 Pistons -Magnaflow X-Cat back - CDC Havoc Styling - TSW Wheels - Roadwire Custom Green Leather Interior - Hotchkis Race Suspension - Whiteline Flatout - KW V3 Suspension - 3M Wraps - Toyo Tires - IPF Supercharger - Vortech V3 - Airaid Filters

09-27-2010, 09:24 PM	#4
ArkySS Camaroless for now... Drives: 2014 Blue Topaz Silverado Join Date: Sep 2009 Location: Arkansas Posts: 1,411	Wouldn't a vacuum leak throw a code? __________________ It was fun while it lasted.....

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Rear End Gears 101	danhr	V8 and V6 Transmissions / Driveline (6L80 / 6L50 / TR6060 / AY6)	92	06-02-2021 04:17 AM
RPM Automotive Festival - Chicago, IL - 7.10.2010	rpm2010	USA - Great Lakes	1	06-29-2010 07:58 PM
We may just have an FI option....	devildoc	Forced Induction - V6	30	06-23-2010 06:22 PM
2011 Mustang Info (Keep all threads here)	RealQuickCamaro	General Automotive + Other Cars Discussion	2648	04-15-2010 08:09 PM
Exhaust whine at 1800 RPM	GMSPOON	Camaro Issues / Problems \| Warranty Discussions \| TSB and Recalls	1	10-29-2009 11:27 AM

08-08-2010, 01:55 AM	#3
sparaz 867-5309 Drives: 2010 CMG RS & 86 black Z28 3rd gen Join Date: Feb 2010 Location: Redondo Beach, L.A. County, California Posts: 295	Should I be able to hear it while it's idle? Will try it out tomorrow, thanks.