Engine & Transmission Post your Engine and Transmission related problems here.
Sponsored by:
Sponsored by:

2000 Blazer no power and rough idle.

  #1  
Old 03-15-2019, 08:53 AM
Beginning Member
Thread Starter
Join Date: Oct 2017
Location: Huntington, In
Posts: 23
Tankerdave is on a distinguished road
Default 2000 Blazer no power and rough idle.

Hope someone can give me some help. My 2000 Blazer with 4.3, automatic, 4 button transfer case and 150,000 miles. Out of the blue started running rough and has no power. Cap and rotor are 2 yrs old, plug wires are a year old and plugs have 50,000 miles on them. SES light is on for fuel trim but still ran alright, but when started running bad the ses light sometimes flashes but not all the time. The truck had been driven earlier in the day and was fine, stopped and shut it off for about 5 minutes, then left again and it began. At times it will barely run 15 mph or maybe a little faster with no power.
 
  #2  
Old 03-15-2019, 10:04 AM
cleburne red's Avatar
BF Veteran
Join Date: Sep 2011
Location: Texas
Posts: 2,110
cleburne red will become famous soon enough
Default

Have you checked the fuel pressure yet?
 
  #3  
Old 03-15-2019, 01:44 PM
Beginning Member
Thread Starter
Join Date: Oct 2017
Location: Huntington, In
Posts: 23
Tankerdave is on a distinguished road
Default

Have not checked fuel pressure yet. Went into town to check for codes, multiple misfires on different cylinders, fuel trim on both banks and if I remember right high voltage on o2 sensor. Came home and it ran fine like it always has. Left to run an errand and it started running badly again but within a mile started running fine again. Thanks for the reply Cleburne red, will check that also .
 
  #4  
Old 03-15-2019, 01:54 PM
cleburne red's Avatar
BF Veteran
Join Date: Sep 2011
Location: Texas
Posts: 2,110
cleburne red will become famous soon enough
Default

Lots of problems with these trucks are due to fuel system woes. Really good practice to check fuel pressure first with any type of driveablility issues. Most parts stores have a free rental pressure checker available
 
  #5  
Old 03-15-2019, 06:25 PM
Beginning Member
Thread Starter
Join Date: Oct 2017
Location: Huntington, In
Posts: 23
Tankerdave is on a distinguished road
Default

Thanks again Cleburne red, will be 1st thing I check.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
blazerguy22
2nd Gen S-series (1995-2005) Tech
10
11-14-2013 11:50 PM
blazer chris
2nd Gen S-series (1995-2005) Tech
1
12-08-2011 09:56 AM
UnknownFish
1st Gen S-series (1983-1994) Tech
22
11-14-2011 07:40 AM
Chevrolet.Love
Engine & Transmission
0
08-19-2011 09:05 PM
ryn9909
Engine & Transmission
7
07-21-2008 05:01 PM


Thread Tools
Search this Thread
Quick Reply: 2000 Blazer no power and rough idle.


Advertising
Featured Sponsors
Vendor Directory

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.