2001 Chevy Blazer (SURGING) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Chevrolet When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-29-2011, 07:17 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
wayneo28088's Avatar
 
Join Date: May 2011
Location: Salisbury, NC
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
wayneo28088 is on a distinguished road
Default 2001 Chevy Blazer (SURGING)

Looking for some help, I replaced the fuel pump assy. After replacing the assy it started surging after about 5 or 6 miles. At start and up to that point it worked great. I then removed the throttle body to find 4 out of 6 injectors leaking. So I replaced the CPI with a new revised MFI assy. I still have a surge just not as bad. Do you think I possibly got a bad fuel pump assy?
wayneo28088 is offline   Reply With Quote
Old 07-29-2011, 07:26 PM   #2
Senior Member
Certified GM nut
 
2k2cse's Avatar
 
Join Date: Jan 2011
Location: Newfoundland, Canada
Posts: 2,112
Thanked 18 Times in 17 Posts
2k2cse has a spectacular aura about2k2cse has a spectacular aura about
Default

Have you checked the fuel pressure regulator? It might be getting bad.
2k2cse is offline   Reply With Quote
Old 07-29-2011, 08:36 PM   #3
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

check the electrical connections and fuel lines to make sure you didnt kink anything putting the tank back up
jwfirebird is offline   Reply With Quote
Old 07-31-2011, 09:48 AM   #4
Member
Posts like a V-Tak
Thread Starter
 
wayneo28088's Avatar
 
Join Date: May 2011
Location: Salisbury, NC
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
wayneo28088 is on a distinguished road
Default

Sounds Logical, Unfortunately I'll have to pull the tank back down but Oh well. I'm trying that this evening. Thanks for the input
wayneo28088 is offline   Reply With Quote
Old 07-31-2011, 09:50 AM   #5
Member
Posts like a V-Tak
Thread Starter
 
wayneo28088's Avatar
 
Join Date: May 2011
Location: Salisbury, NC
Posts: 37
Thanks: 0
Thanked 0 Times in 0 Posts
wayneo28088 is on a distinguished road
Default

I changed the Fuel injector assembly which comes with a new regulator
wayneo28088 is offline   Reply With Quote
Old 08-06-2011, 04:51 PM   #6
Senior Member
Certified GM nut
 
SignOfZeta's Avatar
 
Join Date: Mar 2005
Location: New Milford, CT
Posts: 2,284
Thanked 16 Times in 13 Posts
SignOfZeta has a spectacular aura aboutSignOfZeta has a spectacular aura about
Default

Moved to Chevrolet mechanical and maintenance.

Surging is typically caused by the transmission, but in this case it does sound fuel-related. Did changing the regulator help? Did you disturb any vacuum lines during the install?
SignOfZeta is offline   Reply With Quote
Old 08-12-2011, 12:35 PM   #7
Retired Administrator

True Car Nut
 
GunsOfNavarone's Avatar
 
Join Date: Apr 2009
Location: Williamsport, PA
Posts: 2,856
Thanked 167 Times in 129 Posts
GunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud of
Default

I don't see it being a fuel pump issues, but it is surprising this occurred after replacing the fuel pump. What brand fuel pump did you use? With the new updated injectors (with new regulator), i might look at what might of come undone when you replaced the fuel pump. Vacuum lines, etc. This doesn't sound like a fuel pump problem.
GunsOfNavarone is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2001 Chevy Blazer P0300 misfire wayneo28088 Chevrolet 2 09-07-2011 05:02 AM
2001 Chevy Blazer 4wd 4.3L V6 JonAllen Introductions for new members 10 08-05-2011 10:14 PM
New Project - 1996 Chevy Blazer W/ 4.3 Vortec Cheetah Lounge 21 03-06-2007 01:06 PM
1986 chevy s-10 blazer johnvanveen Lounge 9 09-22-2006 10:29 PM
Poor loser in a Chevy Blazer....and a Saab bonnie94ssei General GM Chat 36 10-29-2003 09:03 PM


Thread Tools Search this Thread
Search this Thread:

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



All times are GMT -4. The time now is 06:29 PM.


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.