93 buick lasabre wont start. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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

Reply
 
 
 
Thread Tools Search this Thread
Old 07-19-2013, 01:52 PM   #1
Junior Member
Thread Starter
 
Join Date: Jul 2013
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Currank is on a distinguished road
Default 93 buick lasabre wont start.

A 3 days ago i went out to start my car and it wouldnt start. it had sat for 4 or 5 hours and when i tried to start it it could crank and everything but just wouldnt start. but after 3 of 4 turns of the key it finally started, that happened the next 3 or 4 times i shut if off but then everything went back to normal and it was started fine until this morning. This morning i went to start it after it sat for 8 or so hours and now im having the same problem, it cranks and cranks but never starts.
any ideas what could be causing this? i just changed the starter a couple weeks ago as well as the battery and alternator.
Currank is offline   Reply With Quote
Old 07-19-2013, 02:28 PM   #2
Senior Member

True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,804
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

We need to know if it is fuel or spark related. If it won't start, check to see if any of the spark plugs are getting spark. If they aren't I would suspect you need a crank shaft position sensor. If you are getting spark rent/borrow/steal a fuel pressure gage and see what the fuel pressure is with engine off key on.

The fact it is cranking indicates the problem is not the battery or the starter.
2kg4u is offline   Reply With Quote
Old 07-19-2013, 03:12 PM   #3
Junior Member
Thread Starter
 
Join Date: Jul 2013
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Currank is on a distinguished road
Default

ok ill check those out and let u know the out come, thanks
Currank is offline   Reply With Quote
Old 07-19-2013, 07:04 PM   #4
Junior Member
Thread Starter
 
Join Date: Jul 2013
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Currank is on a distinguished road
Default

I jsut got dont checking the spark plugs and there not getting any spark.
Currank is offline   Reply With Quote
Old 08-15-2013, 05:35 PM   #5
Senior Member
Posts like a 4 Banger
 
ahicks66's Avatar
 
Join Date: Oct 2012
Location: Salem, CT
Posts: 114
Thanks: 0
Thanked 7 Times in 5 Posts
ahicks66 is on a distinguished road
Default

If you aren't getting spark to the plugs, the first thing I would check is the CPS (crankshaft position sensor), located behind the crank pulley. It'* a pretty common fail point for many GM models, as it is subjected to heat and debris. It'* also a common cause of stalling when hot, or hard-to-start when hot, but as the sensor gets weaker it can lead to an intermittent no-start problem.

The crankshaft position sensor tells the computer the engine is physically turning, and tells the ignition module to produce spark. If the ignition module doesn't get this signal, it will not send spark to the plugs. You will most likely have to remove the serpentine belt and vibration dampener (rubber-filled pulley on the crankshaft) to access the sensor.

If you're replacing the crank sensor, you might as well splurge for the vibration dampener (harmonic balancer) as well - the dampener on my '87 LeSabre went, and I splurged for the CPS as well since I could get to it easily with the old dampener off. And, like I said, it'* a common fail point.

Hope this helps you out; if not, we can troubleshoot further... Ignition module or coil could be bad, but that would be The Next Step.
ahicks66 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2004 buick lasabre katmarie Buick 9 01-27-2014 02:49 PM
2002 Buick Lasabre wally.1962 Buick 3 06-18-2013 09:08 PM
2005 Buick Lasabre skysurfer2000 Buick 5 07-13-2012 08:57 AM
Trouble with Aftermarket CD Player, Buick LaSabre Custom 2000 Earavich Audio (and aftermarket electronics) 1 09-26-2011 03:06 PM
Buick LaSabre Maymybonnieliveforevr Lounge 6 09-05-2007 09:31 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 03:19 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.