C4 Vette Registry - The Best Resource on the Net for C4 Vettes! C4 Vette
Forums -> C4 Engines
Not Logged In! Login or Register!  Users Online: 8 / Help 
Features   CoolC4 Corvette Parts Auctions

Supporting Vendors
CorvetteClothing.com
Mid America Motorworks
Volunteer Vette Products
VetteBookStore.com
Bair's Corvettes

C4 of the Month
None Current
Enter Yours Today!
Vanity Plates
OH4FOR
hotshotzny
Featured Links

Buy Now
Corvette Magazine - $19.99 for 8 issues
Corvette Magazine
Only $19.99 for 8 issues


Corvette: America's Sports Car Yesterday, Today, Tomorrow (Hardcover)
Corvette: America's Sports Car Yesterday, Today, Tomorrow (Hardcover)


Corvette Masterpieces: Dream Cars You'd Love to Own (Hardcover)
Corvette Masterpieces: Dream Cars You'd Love to Own (Hardcover)


Corvette Fifty Years (Hardcover)
Corvette Fifty Years (Hardcover)



| Hide Signatures and Profile Pics

 New Topic New Topic Post Reply Reply New Poll New Poll Search     Search Page [1]  
12/30/18 10:58am - Original Message: 'Engine revs by itself'
DanC4-90
Standard Member
- Send Private Message


Glen Cove, NY - USA

Vette(s):
1990 white with red interior

Joined: 10/4/2014
Posts: 3
First, when I start her up, I always let the engine warm up for a few minutes. When driving and getting over 40mph, the engine revs and drops, revs and drops. My foot is steady on the gas pedal. The revs are maybe 100rpm, nothing to make the car accelerate. After a few minutes of this, she levels out and runs steady. Anybody experience anything like this? Also, she runs really hot if I get stuck in traffic. I rigged up a way to vacuum the radiator and cleaned out the stuff that got sucked into the shroud. If I am moving, the temp is fine. Thanks!
 Reply Reply  Quote Reply w/Quote
 
Support C4VR!
Suport our advertisers
1/6/19 10:59am - Reply: 'Re: Engine revs by itself'
rtslt4
Standard Member
- Send Private Message


Huntington Station, NY - USA

Vette(s):
1996 Black Cpe., Lt. Beige Int., LT4, 6 Spd., Corsa Exh., K & N, & Chrome Replc. Wheels.

Joined: 7/2/2013
Posts: 47
Which transmission does your car have?

____________________________________
Rts-LT4
 Reply Reply  Quote Reply w/Quote
1/10/19 7:06pm - Reply: 'Re: Engine revs by itself'
Superc63
Standard Member
- Send Private Message


Franklinville, NJ - USA

Vette(s):
1988 35th Anniversary 1993 Z07 40th Anniversary

Joined: 7/6/2018
Posts: 9
Hunting RPM sounds like it could be vacuum related, maybe a small leak someplace. Its also possible the throttle position sensor is dirty causing some low rpm fluctuation. Overheating...how hot is it running? The colling fan switch doesnt turn on until coolant temp of around 230. Chris
 Reply Reply  Quote Reply w/Quote
Yesterday 8:28pm - Reply: 'Re: Engine revs by itself'
DanC4-90
Standard Member
- Send Private Message


Glen Cove, NY - USA

Vette(s):
1990 white with red interior

Joined: 10/4/2014
Posts: 3
Stock automatic
 Reply Reply  Quote Reply w/Quote
Yesterday 8:29pm - Reply: 'Re: Engine revs by itself'
DanC4-90
Standard Member
- Send Private Message


Glen Cove, NY - USA

Vette(s):
1990 white with red interior

Joined: 10/4/2014
Posts: 3
Almost decks the needle so I have to pull over and stop. Thanks
 Reply Reply  Quote Reply w/Quote
 New Topic New Topic Post Reply Reply New Poll New Poll Search     Search Page [1]  
 Forums -> C4 Engines
(Moderator: Adams' Apple, Strats-N-Vettes, eddie20890)
 

 
Official C4 Vette Registry Community:
Home | Forums | Email | Who's Online | Clubs | Events | Member Stats

Other Official C4 Vette Registry Areas:
Members | Research | Shop | My Account | About C4VR
 

Corvette is a registered trademark of the General Motors Corporation(GM) & Chevrolet Motor Division. Vette Registries, LLC is responsible for all site content (except for member submitted content or where otherwise noted) and does not claim or imply that Chevrolet or GM is responsible for Official C4 Vette Registry content. Vette Registries, LLC is independent from GM and is not affiliated with, sponsored or supported by GM.  Copyright/trademark/sales mark infringements are not intended, or implied and are in fact used to support GM, Chevrolet and Corvette

Official C4 Vette Registry content is Copyright 2001-2019, Vette Registries, LLC. Content may not be reused without written consent. All Rights Reserved. NS

Corvette (Vette) Model Years on this site: 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 30