erplexing rpms - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 01-12-2003, 10:34 AM
madhat's Avatar
Member
 
Join Date: Dec 2002
Location: Amarillo, Tx
Age: 30
Posts: 111
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Question erplexing rpms

alright...to mt people this may seem trivial but oh well. After each trip(weekends of driving in 93 one time and 66 GTO the other) my rpms were differnt by 300 rpms on the return trip. In the GTO, they went down 300, letting me go 5mph faster at the same rpms, while in the mustang they went 300rpms higher (about 12 ph slower at the same rpms). Not my clutch because, they are both solid and not slipping. Not my needle because I could hear the engine running at the indicated levels. Not becasue of inclines becasue I had the same rpms level/up/down and in town. With both cars, the rpms returned to normal the next morning when I started them up. Any ideas would be appreciated.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 01-12-2003, 10:58 AM
4 Jaw Chuck's Avatar
Hotrodders.com Moderator
 
Last photo:
Join Date: Mar 2002
Location: Manitoba, Canada
Age: 46
Posts: 5,090
Wiki Edits: 0

Thanks: 2
Thanked 112 Times in 90 Posts
Post

Wire resistance to the tach pickup will cause this, check the wire's continuity. The resistance to the connection should be under 1 ohm.
__________________
Outlawed tunes from outlawed pipes
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 01-12-2003, 05:53 PM
BOBCRMAN@aol.com's Avatar
Member
 
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,235
Wiki Edits: 0

Thanks: 30
Thanked 296 Times in 276 Posts
Post

what was the wind direction on these trips, in michigan we have constant westerlies and i get getter gas millage and tach readings on my way east than i do going west.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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 -6. The time now is 02:39 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.