RPM Surge ????? - Off-Road Forums & Discussion Groups
Go Back   Off-Road Forums & Discussion Groups > Chevy and GM > GM Small Trucks & SUV's

GM Small Trucks & SUV's All discussion of S-Class Trucks and SUV's



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-10-2008, 03:44 PM
Ramp Rat
Guest
 
Posts: n/a
Question RPM Surge ?????

My 98 Jimmy with a 4.3L and automatic will show a change in cruse RPM of 200 to 300 rpm. The tach shows an increase of 200 rpm for about 1 second and then returns to its original reading. You can feel the change but only slightly. This happens about every 10 to 15 seconds until you get about 30 to 50 miles down the road. Im assuming that everything has warmed up by then so it stops.
There are no shown or stored trouble codes in the computer. Any ideas?
Thanks, Steve.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old 02-23-2009, 04:53 PM
Stranger
 
Join Date: Feb 2009
Location: eaton rapids
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
eatonrapidsdonnie is on a distinguished road
Default

I had a simular problem with my 96 silverado.. I would come to a stop but my rpm would go from 600 to 1000 then back about every 5 seconds... I noticed that it would do it when I had my defrost setting on for my front windshield. Since it was the summer time, I checked my air conditing level and it was lower then normal. I filled it back up and them that stop and went away. Its been a yr now and mines starting to do it again. I think that I have to charge my ac again {slow leak, maybe you have one also} or maybe its something else?
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools
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 08:22 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.2.0
Copyright 1994-2009, VerticalScope Inc. // Off Road forums & discussion groups sitemap
side by side | atv | dirtbike | snowmobile | sandsport | competition | land use | Jeep | Toyota | Ford | GM