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

1991 Buick Century custom won't start after driving for 15 minutes

Thread Tools
 
Search this Thread
 
Old 11-21-2016, 01:03 AM
  #1  
Junior Member
Thread Starter
 
BuickBeast's Avatar
 
Join Date: Nov 2016
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
BuickBeast is on a distinguished road
Default 1991 Buick Century custom won't start after driving for 15 minutes

So here a list of the things I replaced so far. I'm pretty sure it'* a fuel transfer issue.

Replaced the Ignition control module.
Replaced the Crank Position sensor.
Replaced the Fuel Pressure regulator.
Replaced the 3 coil packs. (the spark was little to none)
Replaced spark plugs.

Now my car only has one symptom left...it won't start up after driving it. I can drive it for 45 minutes or even just 5 minutes on a cold start. But once I park it and come back to it 10-20 minutes later, It will crank and crank and crank but no ignition. If I let it sit for a few hours it will start no problem. But for some reason it doesn't like warm/hot starts. The guy who I let change my oil today said that it looks to be the fuel pump. He tested the relay and it seems fine to him. And he was in vehicle maintenance for 25 years in the Air Force. What do you guys think it could be?? There is a beautiful spark with the new coils and spark plugs. So that'* why I think it'* a fuel issue.

I'M RUNNING OUT OF OPTIONS!!! ........and money lol.

Fuel pump maybe???
Old 11-21-2016, 09:03 AM
  #2  
Senior Member
True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,816
Received 241 Likes on 198 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

Check the fuel pressure and see if that is the issue. Most part stores will lend a pressure tester.
Old 11-21-2016, 07:19 PM
  #3  
Senior Member
Posts like a Supercharger
 
CorvairGeek's Avatar
 
Join Date: May 2016
Posts: 180
Received 68 Likes on 58 Posts
CorvairGeek will become famous soon enoughCorvairGeek will become famous soon enough
Default

Fuel injector that is shorting (it kills them all by design of the circuit). The 'Multitech1' injectors are known for this annoying behavior. At least they are easy to disconnect on the 3300.
Old 11-21-2016, 07:50 PM
  #4  
Senior Member
Posts like a Supercharger
 
CorvairGeek's Avatar
 
Join Date: May 2016
Posts: 180
Received 68 Likes on 58 Posts
CorvairGeek will become famous soon enoughCorvairGeek will become famous soon enough
Default

Good injectors should each measure 12 ohms. Anything less is failing. There is no repair of this generation injectors. They are internally a 'wet' design, which contributes to their flaws.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
finchca
Buick
44
12-29-2022 08:34 PM
desquee
Buick
13
04-29-2016 09:20 PM
Unloadbeastmode
Buick
19
12-25-2014 01:09 PM
raffosautorepair
Buick
4
07-21-2011 02:39 PM
tcbr1966
Buick
14
06-17-2011 05:21 PM



Quick Reply: 1991 Buick Century custom won't start after driving for 15 minutes



All times are GMT -4. The time now is 02:21 AM.