All times are UTC - 6 hours [ DST ]




Ask A Question Reply   
Author Message
 

contributions: 1
Vehicle is a 1990 Buick LeSabre. Ran great for a while. Occasional minor drop in idle but nothing concerning. Recently engine would stutter when giving gas at 45 mph+. Maybe twice during a 20 mile trip. Been like that for months. Here in the last month it idles rough more often. Acts like its going to die when accelerating from stop. Does die when using reverse 75% of the time.
Added fuel treatment, no help. Plugs and wires replaced less than 7 months ago.
Unplugged Mass air flow sensor and ran it down the street. Still acting as before.
Here's the codes I got from auto store.
GM 21 thru 26
GM 32 thru 35
GM 41
GM 43
GM 66
Im going to attempt cleaning the resistors on the Mass Air Sensor by dripping some rubbing alcohol on them.
Any help much appreciated!


   
Reply with quote  
* Search   
 
User avatar

contributions: 2275
Images: 37
Location: Oregon
with all those codes I would look to see if your 5 volt reference was correct. However, how many of those codes did you set by unplugging things? you may have to clear all the codes first and then see what codes come back when you drive it.


   
Reply with quote  
Ask A Question Reply   

   Similar Topics   Author   Replies   Views   Most Recent 
New Articles View the first Rough Idle and Knocking

in Buick

RMax

2

2065

Fri Oct 20, 2017 8:05 pm

Lagat View the latest

New Articles View the first 1998 LeSabre no start no codes

in Buick

jimvee

1

3343

Thu Dec 06, 2012 7:19 pm

ProTech View the latest

New Articles View the first 92 buick regal stalls codes 17 and 25

in Buick

Paul

1

2309

Mon Jul 05, 2010 4:23 pm

Josh34 View the latest

New Articles View the first 1993 buick lesabre DTC codes 47 38 65

in Buick

Rob628

1

2530

Fri Sep 26, 2014 9:45 pm

carriedi View the latest

New Articles View the first Buick Radio unlock procedure and Codes

in Buick

navymanx1947

3

2379

Mon Jul 06, 2015 9:56 pm

butchkaz View the latest

New Articles View the first 1997 Lesabre - Runs Rough When Hot

in Buick

rtrm01

5

2235

Fri Apr 02, 2010 9:54 am

rtrm01 View the latest

New Articles View the first how to get a smooth idle

in Buick

SHOOTER

2

2755

Sun Oct 02, 2016 6:12 pm

SHOOTER1 View the latest


All times are UTC - 6 hours [ DST ]



Search for:
Jump to:  
Contact Us