C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Reduced Engine Power HELP!

Thread Tools
 
Search this Thread
 
Old Dec 21, 2001 | 08:49 PM
  #1  
RMNewJ's Avatar
RMNewJ
Thread Starter
Heel & Toe
 
Joined: Dec 2001
Posts: 15
Likes: 0
From: NJ
Default Reduced Engine Power HELP!

Every time I add a new mod to my 99Vert. Be it a high flow throttle body, ram air, corsa exhaust or whatever. My car bogs down and displays a “Reduced Engine Power” warning. I need to turn the car off then restart it to drive a little further. It seems that after thirty or forty miles the computer learns the new rate of air intake exhaust output etc. Has anyone else had this problem, and is there a solution. Is there a way or devise you can use to re-program the computer to except the changes.
Reply
Old Dec 21, 2001 | 08:57 PM
  #2  
robiferretti's Avatar
robiferretti
Drifting
 
Joined: Sep 2001
Posts: 1,332
Likes: 0
Default Re: Reduced Engine Power HELP! (RMNewJ)

You try kicking it???

there is no reason with those mods you should be receiving that message. The dealer would be hesitant to help as well becuase the mods will be blamed as the cause of the problem. My suggestion is to open the hood and make sure all wires are poperly connected by the air filter and the throttle body. and all the seals are tight, you might have it set up but not connected tight and that may be the cause??? BUt thats a good place to start.Hope you figure it out :cheers:
Reply
Old Dec 21, 2001 | 09:39 PM
  #3  
C5Cemo's Avatar
C5Cemo
Melting Slicks
20 Year Member
 
Joined: Sep 1999
Posts: 2,521
Likes: 0
From: Houston, TX
Default Re: Reduced Engine Power HELP! (robiferretti)

robiferretti's right. These mods should not make the car go into limp mode unless somethings wrong. Check everything over real good. I'd look at the MAS wires/sensors and make sure it's ok. I got the "Reduced Engine" when I had a MAS problem.

Good Luck
Reply
Old Dec 21, 2001 | 11:04 PM
  #4  
Robbie's Avatar
Robbie
Racer
 
Joined: Aug 1999
Posts: 307
Likes: 0
From: Barnwell, SC USA
Default Re: Reduced Engine Power HELP! (RMNewJ)

Normally the Reduced Engine Power mode is enabled when the PCM can't determine the true throttle position and defaults to this mode. You might want to check there and for codes
Reply

Get notified of new replies

To Reduced Engine Power HELP!





All times are GMT -4. The time now is 03:29 AM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE