General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by:
Sponsored by: CARiD

throwing code for high idle, 1600rpm in neutral?

Thread Tools
 
Search this Thread
 
Old May 21, 2009 | 10:38 PM
  #1  
therealcreeper's Avatar
Thread Starter
TECH Addict
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (37)
 
Joined: Apr 2008
Posts: 2,404
Likes: 14
Default throwing code for high idle, 1600rpm in neutral?

so yesterday i got an SES light for high idle rpm. i have been noticing my car shifting a little funny and holding out on shifts but not really idle problems.

anyway, today i was cruising at about 60mph and noticed that when i let off the gas the rpm would not drop at all, felt almost like cruise control was on. just to see what would happen i dropped it to neutral and it wouldn't drop below 1600rpm. later on, going 35ish i dropped to neutral and it revved up to 1600, held, then dropped down after a few seconds.

i've never really payed attention to idle in neutral at high speeds, but it seems a little off. something just doesn't feel right about the throttle but i don't quite know how to describe it.
Reply
Old May 21, 2009 | 11:05 PM
  #2  
LS6427's Avatar
Banned
iTrader: (2)
 
Joined: May 2008
Posts: 11,289
Likes: 13
From: South Florida
Default

Check for vacuum leaks.

Also, failing IAC valve can do that.
Reply
Old May 22, 2009 | 12:50 AM
  #3  
slayerized6's Avatar
TECH Fanatic
iTrader: (12)
 
Joined: Oct 2006
Posts: 1,592
Likes: 1
Default

vaccuum leak. did you pull the code with a scanner?
Reply




All times are GMT -5. The time now is 09:50 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE