Welcome to Camaro Z28!

Welcome to CamaroZ28.Com, the ultimate Source for Camaro enthusiasts! Here you can join over 90,000 Camaro enthusiasts from around the world discussing all things related to Camaros and more. You are currently viewing as a guest which gives you limited access to view discussions

To gain full access to our forums you must register for a free account. As a registered member you will be able to:
  • Participate in over 40 different forums and search/browse from over 5 million posts.
  • Upload your Camaro details to your Garage
  • Post photos, respond to polls and access other special features
  • Gain access to our free marketplace to buy, sell and trade Camaros, parts and more.
All this and much more is available to you absolutely free when you register for an account, so join our community today today!

If you have any problems with the registration process or your account login, please contact support.


Go Back   CamaroZ28.Com Message Board > 1967-2002 Powertrain Discussion > LT1 Based Engine Tech
Sign in using an external account
Register Forgot Password?
Register Garage Photos Blogs FAQ Members List Social Groups Links Calendar Search Today's Posts Mark Forums Read Z28LiveVendor Directory


Reply Post New Thread
 
 
LinkBack Thread Tools Search this Thread Display Modes
Old 06-09-2006, 09:13 PM   #1
Registered User
 
Join Date: Jan 2006
Location: Atlanta,GA
Posts: 570
Map Sensor Voltage Too High

What does this mean and how can i fix this
This ad is not displayed to registered members.
Register your free account today and become a member on CamaroZ28.com!
__________________
1994 Z28 383 Golen Comp Lt1 (Forged)
playa7970 is offline   Reply With Quote
Old 06-09-2006, 10:35 PM   #2
Registered User
 
Join Date: Oct 2001
Location: Greenville Tx Us
Posts: 534
Send a message via AIM to whitehooptie
Re: Map Sensor Voltage Too High

Sounds like a vacuum leak.
__________________
I have Two Camaro's and they both run!!!
whitehooptie is offline   Reply With Quote
Old 06-09-2006, 11:18 PM   #3
Registered User
 
Join Date: Jan 2006
Location: Atlanta,GA
Posts: 570
Re: Map Sensor Voltage Too High

where the heck can it be it cant be one i checked everywhere grrrr
__________________
1994 Z28 383 Golen Comp Lt1 (Forged)
playa7970 is offline   Reply With Quote
Old 06-09-2006, 11:21 PM   #4
Super Moderator
 
Injuneer's Avatar
 
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 40,799
Garage
Re: Map Sensor Voltage Too High

Its partly the cam.... that's what typically raises the kPa at idle above 50kPa. Is it a lot bigger than a CC306 or is it on a 108LSA or something? That in itself might be enough to cause the problem? Then something else could be pushing it above 68kPa at idle to set the code. Tuning problem, timing problem, valve adjustment, burned valve(s), misfires. What is the idle speed?
__________________
Fred

94 Formula A3+1: 381ci all-forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / Comp Cams custom solid roller / TH400 + GearVendors OD / Strange 12-bolt - 4.11's / 300-shot N2O / Spohn suspension / 6-pt roll bar with integrated SFC's / AutoMeter instrumentation / MoTeC M48Pro engine management system / a few other odds 'n ends. 800HP/800LB-FT at the flywheel.
Injuneer is offline   Reply With Quote
Old 06-09-2006, 11:24 PM   #5
Registered User
 
Join Date: Oct 2001
Location: Greenville Tx Us
Posts: 534
Send a message via AIM to whitehooptie
Re: Map Sensor Voltage Too High

I didn't even read the sig. A lot of people I have noticted like to overtighten the valves with will cause all kinds of problems.

My cam is on a 110 and it is around 61kPa.
__________________
I have Two Camaro's and they both run!!!
whitehooptie is offline   Reply With Quote
Old 06-10-2006, 08:30 AM   #6
Registered User
 
Join Date: Jan 2006
Location: Atlanta,GA
Posts: 570
Re: Map Sensor Voltage Too High

well the size of the cam is 23X 23X i dont know if i can say the rest.. if ya know what i mean can i pm you?
__________________
1994 Z28 383 Golen Comp Lt1 (Forged)
playa7970 is offline   Reply With Quote
Old 06-10-2006, 08:44 AM   #7
Registered User
 
Join Date: Mar 2001
Location: Costa Mesa, CA
Posts: 2,525
Send a message via AIM to FastZinTennessee
Re: Map Sensor Voltage Too High

You need to PM who made the cam (Bret) and he can tell you what those cams kind of KPa readings those cams usually make at idle. He designed the cam, he knows best.
__________________
1995 Z/28 A4- Ported Intake/Heads, 236/248 .608/.578 111 LSA, Canton Pan, Hooker LT's, Yank SS4000 stall.
1991 Nissan 240SX 5 speed- My vain attempt at laughing in the face of big oil companies and rising fuel costs.
FastZinTennessee is offline   Reply With Quote
Old 06-13-2006, 10:54 AM   #8
Registered User
 
Join Date: Apr 2002
Location: sebewaing, mi
Posts: 1,309
Send a message via AIM to limige
Re: Map Sensor Voltage Too High

Quote:
Originally Posted by Injuneer
Its partly the cam.... that's what typically raises the kPa at idle above 50kPa. Is it a lot bigger than a CC306 or is it on a 108LSA or something? That in itself might be enough to cause the problem? Then something else could be pushing it above 68kPa at idle to set the code. Tuning problem, timing problem, valve adjustment, burned valve(s), misfires. What is the idle speed?
my car has the same problem, map is at 85-90 kpa running a 230/236-110 cam. it was fine until i installed new summit lifters, gmpp guideplates, pushrods and 1.6 pro mag rr's. i can't find any intake leaks, tried another map sensor and i'm at a loss.
at first i tried install just the new rockers, ran it and the map was fine but i had high knocks, pulled it apart to find a bad lifter, once i replaced the lifters, pushrods ect i had the high map....
__________________
http://www.pbase.com/limige/94lt16speed
DRIVE IT LIKE YOU STOLE IT!

94 Purple Pearl Z28, M6
4:10's in the rear, gonna spray away this year!
limige is offline   Reply With Quote
Old 06-13-2006, 12:42 PM   #9
Registered User
 
Sweetred95ta's Avatar
 
Join Date: Sep 2002
Location: High Ridge, MO
Posts: 2,198
Send a message via AIM to Sweetred95ta
Re: Map Sensor Voltage Too High

What are you IAC counts? If they are too low (not around 30-40) that can cause a loss of vacuum. If this is the case, adjust the throttle stop screw to allow the blades to close down a little bit. What kind of timing are you running at idle? If you have the means to change this, try adding some timing. That's as long as all of the other angles have been covered (ie valve adjustment, leaks, IAC counts, etc.)
__________________
Benji - 1995 Trans Am - A4 (Now M6): Forged 355, H/C (Joe O Cam), 9" 4.22:1, TNT F2, ect. 403 rwhp/395 rwtq (w/ valve float)
Quote:
Originally Posted by micfly83 View Post
Up in my top list of fears next to sharks and getting my ***** cut off, is a spun bearing, so I'm praying to god thats not it.
Sweetred95ta is offline   Reply With Quote
Old 06-14-2006, 07:15 AM   #10
Registered User
 
Join Date: Apr 2002
Location: sebewaing, mi
Posts: 1,309
Send a message via AIM to limige
Re: Map Sensor Voltage Too High

i got it, my intake gasket slipped into the lifter valley when putting it back together, should be good once i get some new gaskets!
__________________
http://www.pbase.com/limige/94lt16speed
DRIVE IT LIKE YOU STOLE IT!

94 Purple Pearl Z28, M6
4:10's in the rear, gonna spray away this year!
limige is offline   Reply With Quote
Old 06-14-2006, 08:12 AM   #11
Registered User
 
Join Date: Jan 2006
Location: Atlanta,GA
Posts: 570
Re: Map Sensor Voltage Too High

i doubt i have a vacuum leak tho im going to set my valve adjustment later today and see if it helps my situation ill keep you guys updated
__________________
1994 Z28 383 Golen Comp Lt1 (Forged)
playa7970 is offline   Reply With Quote
Old 06-14-2006, 08:12 AM
 
Reply Post New Thread

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 03:54 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO ©2011, Crawlability, Inc.
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
Copyright © 1996-2013 CamaroZ28.Com. All rights reserved.