Go Back   Blazer Forum - Chevy Blazer Forums > Mechanical & Maintenance > General Tech Help > 2nd Gen S-series (1995-2005) Tech
Sign in using an external account
Register Forgot Password?
Search


Welcome to Blazer Forum!
Welcome to Blazer Forum,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Blazer Forum today!


Closed Thread
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-18-2007, 03:59 PM
 
Join Date: Feb 2007
Location:
Posts: 3
Custis is an unknown quantity at this point
Default 97 Blazer oil pump replace?

Hi, can anybody tell me if I can replace an oil pump in a 97 blazer with a 4.2 without removing the motor.

Thanks, my manual is very vague on the topic.

Kurt
__________________
1997 Chevrolet Blazer 4x4 4.3 Liter
  #2  
Old 02-18-2007, 04:50 PM
swartlkk's Avatar
Administrator
2009 GMC Yukon Denali
My Garage
 
Join Date: May 2005
Location: Waterloo, NY
Posts: 36,849
swartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond repute
Send a message via ICQ to swartlkk Send a message via AIM to swartlkk
Default RE: 97 Blazer oil pump replace?

Is your truck a 4wd? Please put your vehicle information in your signature (via the 'My Profile' link at the top) and click on the check box to attach your signature in all of your posts. This will give us all of the information we need to give you the proper advice.

Why are you thinking that your oil pump is bad?
  #3  
Old 02-18-2007, 05:17 PM
BF Veteran
 
Join Date: Jun 2006
Location: Vancouver. B.C. Canada
Posts: 3,429
Chevy Lover is a jewel in the roughChevy Lover is a jewel in the roughChevy Lover is a jewel in the rough
Default RE: 97 Blazer oil pump replace?

You mean you have a 4.3L V6, right?
You ned to remove the oilpan and then it's just a couple of bolts holding the oil pump in. As swartlkk has asked, why do you think you need a new oil pump? What are the oil pressure readings and have you tested with a proper oil pressure guage or are you just going by the guage in the dash?
__________________

Give a man a fish and he will eat for a day, teach a man to fish, and he will sit on a boat drinking beer for a life time

The '74 Blazer convertible, new exhaust
http://www.youtube.com/user/hdharley.../9/BZySHHznFTs
  #4  
Old 02-18-2007, 05:40 PM
 
Join Date: Feb 2007
Location:
Posts: 3
Custis is an unknown quantity at this point
Default RE: 97 Blazer oil pump replace?

Hi.. thanks for replying so fast.

Yes it is a 4x4 with a 4.3L V6. and it looks very cramped underneath.

I'm just going by the guage on the dash. It starts at about 60 and drops to around 20 at operating temperature. I presently believe the dash gauge because the motor taps and gets very clunky when at operating temperature. However I will test it to confirm a bad pump before attempting to change it.

My manual shows a pressed steal oil pan and mine is cast so I'm not to confident about believing it.

Thanks again.. I appreciate it. : )
__________________
1997 Chevrolet Blazer 4x4 4.3 Liter
  #5  
Old 02-18-2007, 06:37 PM
BF Veteran
 
Join Date: Jun 2006
Location: Vancouver. B.C. Canada
Posts: 3,429
Chevy Lover is a jewel in the roughChevy Lover is a jewel in the roughChevy Lover is a jewel in the rough
Default RE: 97 Blazer oil pump replace?

Here's some specs for ya.






il Pressure (Minimum Hot)

41.4kPa at 1,000 engine rpm (Minimum)
124.1kPa at 2,000 engine rpm
165.4kPa at 4,000 enigne rpm

6.0psig at 1,000 engine rpm
18.0psig at 2,000 engine rpm
24.0psig at 4,000 enigne rpm
__________________

Give a man a fish and he will eat for a day, teach a man to fish, and he will sit on a boat drinking beer for a life time

The '74 Blazer convertible, new exhaust
http://www.youtube.com/user/hdharley.../9/BZySHHznFTs
  #6  
Old 02-19-2007, 12:10 AM
Junior Member
 
Join Date: Oct 2006
Location:
Posts: 402
Kordog is an unknown quantity at this point
Default RE: 97 Blazer oil pump replace?

Custis, your engine will not make noise due to low oil pressure until it drops down below min spec. How many miles are on it and what kind of oil do you use, also when was the last oil change? Korey
__________________
Korey
2000 Blazer LT, 30X9.5x15 Dueler AT, Cold air intake, Magnaflow exhaust.
ASE Master Auto Tech.
  #7  
Old 02-19-2007, 04:05 PM
 
Join Date: Feb 2007
Location:
Posts: 3
Custis is an unknown quantity at this point
Default RE: 97 Blazer oil pump replace?

Hi Kordog, thanks for your reply.

I recently bought this truck out of an auction. The oil was clean but I changed it anyway to see if it would help. I put 20-50 in it and it did help a bit, but not much. It definitly sounds like it's starved for oil when it gets hot and when restarting hot, it's really bad. The motor operates around 195 so everything seems normal.

Is there anything else that might cause these symptoms? I thought maybe the crackcase was getting to much pressure but the pcv seems to work fine.

I really needanoil pressure test guage but haven't had a chance to pick one up yet.
__________________
1997 Chevrolet Blazer 4x4 4.3 Liter
  #8  
Old 02-19-2007, 04:24 PM
 
Join Date: May 2006
Location:
Posts: 74
JustBlaze! is an unknown quantity at this point
Default RE: 97 Blazer oil pump replace?

I don't think the dash oil gauge is very accurate. Mine also fluctuates, and I am sure that there is the correct amount of oil in there. From what I understand, the oil pump will cut off fuel to the engine if your oil or oil pressure level is too low. I agree with Chevy Lover, you should test the oil pressure with an actual gauge before replacing the oil pump.
__________________
1996 Blazer 4Dr 4WD 4.3L
  #9  
Old 02-19-2007, 04:31 PM
swartlkk's Avatar
Administrator
2009 GMC Yukon Denali
My Garage
 
Join Date: May 2005
Location: Waterloo, NY
Posts: 36,849
swartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond reputeswartlkk has a reputation beyond repute
Send a message via ICQ to swartlkk Send a message via AIM to swartlkk
Default RE: 97 Blazer oil pump replace?

What type of oil filter are you running?
  #10  
Old 05-11-2007, 09:24 PM
New Member
 
Join Date: Dec 2006
Location:
Posts: 59
AutomagicLS1 is an unknown quantity at this point
Send a message via AIM to AutomagicLS1 Send a message via Yahoo to AutomagicLS1
Default RE: 97 Blazer oil pump replace?

mine sits at about 20psi idling and 45-50 driving
__________________
2002 Pontiac Trans Am-88mm Turbo LS1 street car
2000 Chevy Blazer 4x4- Daily Driver
Old 05-11-2007, 09:24 PM
 
 
 
Closed Thread

Tags
1996, 1996blazer, 1997, 2000, 96, blazer, change, changing, chevy, fluctuates, hot, losing, oil, pressure, pump


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 On
Pingbacks are On
Refbacks are On


Advertising

Featured Sponsors
Vendor Directory
Our Sponsors

All times are GMT -5. The time now is 01:39 AM.

Internet Brands, Inc.



SEO by vBSEO ©2010, Crawlability, Inc.