Can gas really make that big of a difference? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-15-2007, 03:23 AM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2007
Location: Chicago, Illinois
Posts: 74
Thanks: 0
Thanked 0 Times in 0 Posts
the_ville is on a distinguished road
Default Can gas really make that big of a difference?

Ok, I've been posting about my stalling issue for some time with no resolution. I've had a full tune-up, checked battery cables for corrosion, and even replaced my cat. After replacing my cat I did notice it had more power and didnt bog down anymore but its starting to happen again. The one thing I did notice is that when I use 89 gas over 87, the car will run longer before stalling. Out of all the suggestions I have gotten, would a new fuel pump possibly help. Also I have been suggested into looking into getting a new computer. I had a previous issue with my RAC module that caused my car to run bad and constantly drain my battery. Could either the fuel pump or computer be a potential solution?? My battery and temperature gauges also move back and forth the ENTIRE time im driving but thats the least of my worries.
the_ville is offline   Reply With Quote
Old 11-15-2007, 05:12 AM   #2
Senior Member
True Car Nut
 
Join Date: Sep 2006
Location: Bloomington, MN
Posts: 3,693
Thanks: 0
Thanked 0 Times in 0 Posts
GoldenBullet is on a distinguished road
Default

before replaceing the fuel pump, i would suggest testing the fuel pressure to see if it is up to par, as putting in a fuel pump isnt that easy
GoldenBullet is offline   Reply With Quote
Old 11-15-2007, 11:48 AM   #3
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2007
Location: Chicago, Illinois
Posts: 74
Thanks: 0
Thanked 0 Times in 0 Posts
the_ville is on a distinguished road
Default

Im not that big on self repairs, some things I can do and a lot I can't. How exactly would I check the fuel pressure. Also, I wouldnt be changing it myself.
the_ville is offline   Reply With Quote
Old 11-15-2007, 12:23 PM   #4
Senior Member
Certified GM nut
 
Join Date: Feb 2004
Location: CT
Posts: 2,099
Thanks: 0
Thanked 1 Time in 1 Post
SSEBONNE4EVA is on a distinguished road
Default pump

Without testing it you are just throwing parts a it hoping the proble will go away.
I would be more apt to change the filter, do a pressure test, and remove and clean all sensor connectors as well as the computer harness. Then a bottle of fuel injector cleaner.
Not sure which year but one of the early 90'* cars has problems with the fuel pickup in the tank.
Maybe someone else will chime in.
SSEBONNE4EVA is offline   Reply With Quote
Old 11-16-2007, 01:05 AM   #5
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2007
Location: Chicago, Illinois
Posts: 74
Thanks: 0
Thanked 0 Times in 0 Posts
the_ville is on a distinguished road
Default

changing the filters and cleaning the sensors and other things I can probably do myself. Which ones should I be going for? I tried the fuel system cleaner, it helped a little but I still have this irritating, random stalling.
the_ville is offline   Reply With Quote
Old 11-16-2007, 03:27 AM   #6
Senior Member
Posts like a Camaro
 
Join Date: Jun 2007
Location: Chambersburg, Pennsylvania
Posts: 882
Thanks: 0
Thanked 0 Times in 0 Posts
putertopia is on a distinguished road
Default

Not 100% sure on the location of the the attachment point on the fuel rail(correctname slips my mind right now at 2:15AM), but you need to get ahold of a fuel pressure tester and hook it up. The attachment point on the fuel rail looks like a valve stem on a tire. Typically Autozone/Advance Auto Parts lets you 'borrow' tools like these if you don't have them.

Maybe somebody else will chime in with what specs you should be seeing, because I myself am not sure. I think I may have seen something in techinfo...
putertopia is offline   Reply With Quote
Old 11-16-2007, 10:54 AM   #7
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2007
Location: Chicago, Illinois
Posts: 74
Thanks: 0
Thanked 0 Times in 0 Posts
the_ville is on a distinguished road
Default

I lookws through tech info but I found nothing about how to test it. There were a few threads about it in the archives but nothing in specific about procedures.
the_ville is offline   Reply With Quote
Old 11-16-2007, 12:49 PM   #8
Senior Member
Certified GM nut
 
Join Date: Feb 2004
Location: CT
Posts: 2,099
Thanks: 0
Thanked 1 Time in 1 Post
SSEBONNE4EVA is on a distinguished road
Default fuel pressure

You just screw the end of the gage onto the schrader valve on the fuel rail and key the ignition until you hear the pump run and then stop. Then take your reading off of the gage.
SSEBONNE4EVA is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
BIG WHEELS, REALLY BIG, but there are alot of 3.8 on them to mike1053 General GM Chat 15 08-19-2007 07:54 PM
Gas stations. Is there really such thing as bad gas? ComfyCar General GM Chat 29 07-18-2005 03:04 AM
Big Move...BIg Renovations...Big Time! Jim W Lounge 32 06-16-2005 12:02 AM
Big guy....Big Car....Big Possibilities Way_2Fast_Way_2Furious Introductions for new members 10 05-25-2005 01:06 PM
Sometimes, Little things CAN make a difference crzydmnd72 1987-1991 7 09-27-2004 01:49 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 05:24 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.