Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 ZR-1 Discussion
Sign in using an external account
Register Forgot Password?
Register Albums Search Today's Posts Mark Forums Read FAQ
Search
C4 ZR-1 Discussion General ZR-1 Corvette Discussion, LT5 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C6 Parts & Accessories
C5 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 06-24-2003, 03:05 AM   #1
YorkL8apex
CF Senior Member
Support Corvetteforum!
 
YorkL8apex's Avatar
 
Member Since: Jun 2001
Location: Poquoson VA
Default "Power" shut off at high rpm?

I've got a '91 and have had the computer shut down to normal power on me a few of times recently. Seems to happen at high rpm's in 3rd gear. I feel the engine swith to normal power and the @service engine@ light comes on.

All gauges in the green, no stumbling, etc. Have been able to shut the engine down and power has come back fine once restarted.

Any ideas, a fellow ZR-1 owner told me he had similar probs and wound up replaceing the compuker? :confused:


[Modified by York67vette, 3:06 AM 6/24/2003]
YorkL8apex is offline   Reply With Quote
Old 06-24-2003, 08:24 AM   #2
Scoob
CF Senior Member
 
Scoob's Avatar
 
Member Since: Mar 1999
Location: Life's tough, wear a helmet. NJ
Default Re: "Power" shut off at high rpm? (York67vette)

When the light comes on what code is thrown? When you say high rpm, how high? It could be something simple as the air duct collapsing, but I'd check the code first.
Scoob is offline   Reply With Quote
Old 06-24-2003, 09:17 AM   #3
gmanZR1
CF Senior Member
 
gmanZR1's Avatar
 
Member Since: Nov 2000
Location: Ewing NJ
Default Re: "Power" shut off at high rpm? (York67vette)

I had a similar problem; turned out to be a cam sensor, but you gotta check the codes to be sure.
some codes once set, will keep the engine in the valet mode as protection against further possible damage from occurring
gmanZR1 is offline   Reply With Quote
Old 06-24-2003, 09:18 AM   #4
BiZ
CF Senior Member
 
Member Since: Aug 2000
Location: Lost in the mountains of TN
Default Re: "Power" shut off at high rpm? (Scoob)

Get the code from the computer. Sounds like a bad secondary vacuum pump.(Code 61 I think) I had a leak that made my pump go bad. It threw a code when the pump died. I put a new pump on and it fixed it for the moment. It turned out I had a few vacuum leaks that proceeded to get worse. Once I fixed those all was well again.

About 2 weeks after installing the new pump my car would pull through first gear just fine. But in 2nd or 3rd if I pulled up into the 5500-6000RPM range the car would fall on it's face. One of my secondary actuators would not hold vacuum and would close the right bank. It felt like the key was not turned on at all.
BiZ is offline   Reply With Quote
Old 06-24-2003, 04:53 PM   #5
FastZR1
CF Senior Member
 
FastZR1's Avatar
 
Member Since: Nov 2000
Location: Eastern NC
Default Re: "Power" shut off at high rpm? (BiZ)

Dam Tony. If you weren't in the UK every two weeks having a great time, I would help you pull the codes anytime.

The car seem to be running fine last night when the back-up driver was blasting down the back roads of York County. I was with Diane when I saw this young woman shoot past me very quick in a Red ZR-1. Car looked to be running fine to me. :jester
FastZR1 is online now   Reply With Quote
Old 06-24-2003, 05:42 PM   #6
The Lurker
CF Senior Member
 
Member Since: May 2003
Location: Katmandu
Default Re: "Power" shut off at high rpm? (fastzr1)

On my 91 I had the computer just go nuts on me twice. No codes, no nothing, just the A/C goes completely crazy, the power switch is gone, it's like the car blew its brains out. I turn it off and restart it and it is like nothing happened. I never figured it out. And no, it is not the A/C going nuts. I've had that happen several times. It's the car, it's possessed!
The Lurker is offline   Reply With Quote
Old 06-26-2003, 07:56 AM   #7
YorkL8apex
CF Senior Member
Support Corvetteforum!
 
YorkL8apex's Avatar
 
Member Since: Jun 2001
Location: Poquoson VA
Default Re: "Power" shut off at high rpm? (BiZ)

Thanks Guys!!! I'll pull the codes when I get back "in country". :flag

Ed, You should have seen "the back up driver" run up to the speed limit with a couple of crotch rockets Sunday :reddevil

Dad's in the passenger seat yelling "Nail It" and the crotch rocket riders are wondering what kind of Vette just blew them away 15-60mph (2nd gear).

:rofl:
YorkL8apex is offline   Reply With Quote
Old 06-26-2003, 10:18 AM   #8
A26B
CF Senior Member

 
A26B's Avatar
 
Member Since: Jul 2002
Location: LPE Aerobody * SGC 415 Oklahoma
Send a message via AIM to A26B
Default Re: "Power" shut off at high rpm? (The Lurker)

Quote:
It's the car, it's possessed!
Probably the altitude in Katmandu :lol:
A26B is offline   Reply With Quote
Old 06-26-2003, 10:07 PM   #9
FastZR1
CF Senior Member
 
FastZR1's Avatar
 
Member Since: Nov 2000
Location: Eastern NC
Default Re: "Power" shut off at high rpm? (York67vette)

Quote:
Ed, You should have seen "the back up driver" run up to the speed limit with a couple of crotch rockets Sunday :reddevil
I am sure the back up driver will tear up the course in Anderson.
Also, I was going to take the wheels and stuff to Jeff, but when I called your house no one was home. So I'll take them over this weekend.
And, check out the sig. Time to find a new home for the rocker panels.
FastZR1 is online now   Reply With Quote
Old 06-26-2003, 10:27 PM   #10
BiZ
CF Senior Member
 
Member Since: Aug 2000
Location: Lost in the mountains of TN
Default Re: "Power" shut off at high rpm? (fastzr1)

Ed, You have mail
BiZ is offline   Reply With Quote
Old 07-07-2003, 02:01 PM   #11
YorkL8apex
CF Senior Member
Support Corvetteforum!
 
YorkL8apex's Avatar
 
Member Since: Jun 2001
Location: Poquoson VA
Default Re: "Power" shut off at high rpm? (fastzr1)

Ed,

Heard you were going to Ohio to get the car now that you have a BRAND NEW garage for it. Heard somehing about a house or something attached to the garage to?

Mine made it back from Anderson but just barely. I'm pulling codes later today, power started cutting out on second laps Saturday and finally would not even come on for the ride home. Had now choise but to drive it back to VA.

Tony
YorkL8apex is offline   Reply With Quote
Old 07-07-2003, 09:54 PM   #12
YorkL8apex
CF Senior Member
Support Corvetteforum!
 
YorkL8apex's Avatar
 
Member Since: Jun 2001
Location: Poquoson VA
Default Re: "Power" shut off at high rpm? (York67vette)

Pulled the codes tonight, 44=engine running lean, and 55=lean exhaust. My book says to check the O2 sensor and fuel pressure. I hope I did not kink a fuel line changing tires at Anderson, I did not have a hockey puck and used Jeff's new "Harbour Freight" jack to lift each side.
YorkL8apex is offline   Reply With Quote
Old 07-07-2003, 09:54 PM
 
Go Back   Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 ZR-1 Discussion
Reload this Page "Power" shut off at high rpm?
 
 
 
Reply

Tags
car, corvette, engine, high, rpm, rpms, shut, shutoff, shuts


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Weights, measurements, ratios, strengths, etc leaftye C5 Tech 252 02-02-2014 12:23 PM
C6 FAQ (Frequently Asked Questions) docrings1 C6 Corvette General Discussion 216 12-01-2010 03:33 AM
power loss...detailed discription of whats wrong with my car.... 1990dtgL98squared C4 Tech/Performance 18 07-31-2004 08:09 PM
1995 corvette running hot at slow speeds Mike1950 C4 Tech/Performance 18 06-17-2003 12:16 PM
HyperTech Power Programmer questions no_radio C4 Tech/Performance 18 04-19-2003 03:06 PM
Does anyone ever shut off the "power key?" Bans25 C4 ZR-1 Discussion 27 11-03-2002 09:25 AM
Good High Street Kill Story EricVonHa Northeast 14 12-11-2001 12:10 AM


All times are GMT -4. The time now is 12:43 PM.


Emails & Password Backup

Search Engine Friendly URLs by vBSEO 3.5.2