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1997 Chevrolet Cavalier low idle surging #4724996
04/12/18 06:44 PM
04/12/18 06:44 PM
Joined: May 2005
Posts: 764
USA
97prizm Offline OP
97prizm  Offline OP
Joined: May 2005
Posts: 764
USA
I'm back,

I fixed the coolant issue, it was a bad coolant cap,but now a biggie. Yesterday out of the blue I started the car turned it off then turned it back on. It started surging, low idle 5-600 rpm sometimes wouldn't rev above 4000 rpm. At first my dad thought a bad vacuum hose. I sprayed starter fluid all over, with no increase in rpm. I've heard the crank or throttle position sensor can go bad. All help would be great.


If at first you don't succeed fail fail again. (Waldorf and Statler.)
1997 Geo Prizm
1984 Mazda RX-7 Spec 7
Re: 1997 Chevrolet Cavalier low idle surging [Re: 97prizm] #4725002
04/12/18 06:55 PM
04/12/18 06:55 PM
Joined: Apr 2016
Posts: 1,185
Campbellsville, KY
Alex_V Offline
Alex_V  Offline
Joined: Apr 2016
Posts: 1,185
Campbellsville, KY
I just worked on a '97 last week - wouldn't idle at all. As soon as I started spraying carb cleaner down into the throttle body it started getting better, so I removed and cleaned it thoroughly which fixed it. Commsnded idle is very low, barely above 600 when warm.


I like Chevy and Valvoline.

'13 Cruze, 1.4T, 113K
'85 GMC C3500, 454, 130K
'82 Mercedes 300CD, OM617 turbo, 169K
'67 Suburban, 350, 331K
Re: 1997 Chevrolet Cavalier low idle surging [Re: 97prizm] #4725446
04/13/18 07:48 AM
04/13/18 07:48 AM
Joined: Mar 2017
Posts: 570
West Ma.
rollinpete Offline
rollinpete  Offline
Joined: Mar 2017
Posts: 570
West Ma.
Could be your (IAC) idle air control valve. Here's a video on how to check it. (It may help) also you could try cleaning your maf sensor. Good Luck.



Pete.
97 Ford Expl.Sport 4.0 ohv 4wd 5spddrive184k miles
Last Change;
Penn. Plat. HM. 5w30
Fram xg8a, Fram CA8141

I like my oil (slippery).

Re: 1997 Chevrolet Cavalier low idle surging [Re: 97prizm] #4725559
04/13/18 09:29 AM
04/13/18 09:29 AM
Joined: Sep 2015
Posts: 1,526
USA
mk378 Offline
mk378  Offline
Joined: Sep 2015
Posts: 1,526
USA
When you put it in gear and are moving, does it drive OK?

"won't rev over 4000 rpm" is not the IACV.

Re: 1997 Chevrolet Cavalier low idle surging [Re: 97prizm] #4725924
04/13/18 03:49 PM
04/13/18 03:49 PM
Joined: Feb 2013
Posts: 3,226
Central Virginia
Silverado12 Offline
Silverado12  Offline
Joined: Feb 2013
Posts: 3,226
Central Virginia
A clogged injector can cause surging, hesitation, etc. Sounds like a fuel issue to me.


12 Chevy Silverado ext. cab LS, 2WD 4.3 auto
18 Mustang GT 5.0 auto
07 Harley Dyna Street Bob 96 c.i. 6 sp.
00 Mustang GT auto
Re: 1997 Chevrolet Cavalier low idle surging [Re: 97prizm] #4726302
04/13/18 10:07 PM
04/13/18 10:07 PM
Joined: Sep 2007
Posts: 8,598
Florida
artificialist Offline
artificialist  Offline
Joined: Sep 2007
Posts: 8,598
Florida
Failing ignition coil pack?


2010 Lancer Ralliart Sportback
Re: 1997 Chevrolet Cavalier low idle surging [Re: artificialist] #4726408
04/14/18 05:00 AM
04/14/18 05:00 AM
Joined: Apr 2014
Posts: 1,252
South Central PA
Delta Offline
Delta  Offline
Joined: Apr 2014
Posts: 1,252
South Central PA
Originally Posted By: artificialist
Failing ignition coil pack?


If it's the 2.2 I would agree. Quite common on those engine.


'17 VW GTI 2.0T - 6MT - 9K - Edge 0w40
'15 Camry SE - 2.5 - 20K - PP 0w20
'99 S10 - 2.2 5MT - 155K - T6 0w40

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